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2005 Acura TL 1
2005 Acura TL : Model Overview INTRODUCTION The 2005 Acura TL
luxury-performance sedan truly defines the next level of the Acura
brand. It's a vehicle that combines increased performance with a
dynamic design, new technologies and precision craftsmanship.
Combining sophisticated performance and athletic style, the
third-generation TL can be summed up simply: "It is the signature
of Acura." The 2005 TL represents the third generation of Acura's
luxury-performance sedan. Originally introduced in 1995, the
second-generation TL was launched in the Fall of 1998 and quickly
took over the luxury vehicle market, becoming a best seller and
setting the benchmark for competing products. TL buyers appreciated
the previous-generation model for its overall performance and high
feature content. The subsequent Type S model, that debuted in 2001,
brought the TL to a higher level of performance and appealed to
buyers looking for more of a "driver's car." The 2005 TL
luxury-performance sedan builds upon and exceeds the previous Type
S in terms of handling and performance, refinement, and
technological features for consumers who want a dynamic blend of
performance and luxury. What's New For 2005
o Dynamic Navi Package Model o Hands Free Link™ – Bilingual
Wireless telephone interface with steering wheel
mounted controls MARKETING POSITION The 2005 Acura TL will
compete in the expanding Canadian luxury vehicle market. Although
the previous-generation TL has been established as a top seller, in
recent years competing products have emerged as popular
alternatives. The third-generation TL benefits from increased
levels of luxury and performance. As such, it is designed to offer
an affordable alternative to car buyers shopping in the higher-end
of the luxury market, such as the BMW 5-series and Audi A6. KEY
DEMOGRAPHICS The target customer is a 43 year old male who is well
educated and has a professional, high paying occupation. His
purchase reasons are primarily based on styling and performance,
but traditional Acura traits, such as Dependability, Quality and
Reliability remain important. Target Customer Age: 43 % Male: 85% %
Married: 86% Income: $140,000 University + 80% Occupation: Prof. /
Mang 80%
2005 Acura TL : Body
BODY OVERVIEW The previous-generation Acura TL and TL Type S
luxury-performance sedans were appreciated for their impressive
performance and handling. TL buyers also enjoyed high levels of
build quality, craftsmanship, durability and resale value. For the
current generation TL, the designers chose to "step outside the
box" to provide TL customers with a daringly more emotional and
athletic design.
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2005 Acura TL 2
DESIGN CONCEPT Acura designers worked from the wheels up on the
current generation TL to design a vehicle with aggressive style,
power, agility and endurance. Designers began with the stance of
the vehicle. They worked towards a look of poise, with a promise of
agility and power. The contrast of muscular tension and fluid lines
flows through the sheet metal, with the long wheelbase, short front
and rear overhangs and wide track setting the tone. The design team
leaders were, in part, influenced by "Bauhaus" styling themes.
Founded in 1919, Bauhaus was the first and most famous German
design house. Bauhaus set a template for European design with the
now-famous maxim, "Form follows function." That classic design
logic meshes well with established Acura design philosophies. An
excellent example of this fresh design sense is in the dynamic
"face" of the TL, with its strong character and reduced body
openings. An under-bumper cooling air system makes this new look
possible because most of the cooling air is drawn in beneath the
front fascia. The Acura TL design features in review: Front
o Aggressive front end o Wide stance o Short dramatic bumper
offset o Raked windshield o Strong style lines at the outer edges
of the hood
Side o Reduced wheel arch to tire distance o Concave style line
links front and rear marker lights o Integrated body colour door
handles
Rear o Wide stance o High, short deck lid o Short dramatic
bumper offset o Wide roof span for wider moonroof and improved head
clearance o Efficient trunk room o LED taillights o Reduced gap
between exhaust finishers and rear valance
PACKAGING The current generation Acura TL is 159 mm shorter, 40
mm wider and incrementally taller than the previous generation
TL.
2005 TL 2003 TL Difference Length, mm 4809 4889 -159 Width, mm
1835 1795 40 Height, mm 1441 1365 76
Wheelbase, mm 2740 2745 -5 Track, Front/Rear, mm 1577/1576
1553/1535 24/41
In determining the overall dimensions of the TL, the BMW 530i
and Lexus ES 300 were the primary benchmarks. Audi's A6, the
Infiniti G35, and the Mercedes-Benz C320 and Volvo S60 were
secondary targets. RIGIDITY Adding stiffness to a vehicle's unit
body improves roadholding and makes the driver feel more connected
to the car, but it also can add weight. In the TL, increased use of
high strength
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2005 Acura TL 3
steel accounts for a strong unit body structure that is also
light. A front shock tower brace, a more rigid front bulkhead, a
roof stiffener that extends to the C-pillar, and a new parcel shelf
box section also contribute to stiffness. Improved attachment of
the front frame rails, roof and rear panel and parcel shelf and
larger rear unit body gussets also contribute to overall stiffness.
The average torsional rigidity is 24 percent greater than the
previous generation TL. The new front bulkhead substantially
improves front lateral bending rigidity by 30 percent over the
previous TL. HIGH-TENSILE STEEL High-tensile steel was used for 48
percent of the TL's body. Even though the forming process is
similar to standard steel, the chemical compositions allow the
material to be stronger after forming. Therefor, parts can be made
thinner and lighter while maintaining strength. AERODYNAMICS Design
and engineering objectives for the TL required aerodynamic
creativity. The challenge was to allow stylists to craft the TL
front end as powerfully and emotionally as they wanted, without
impeding the airflow essential for engine operation. Moreover,
crash safety, high-speed stability, reduced wind noise and high
fuel mileage were essential. Achieving the desired exterior styling
required that most of the cooling air come from under the front of
the car. Several different polypropylene panels enhance underbody
aerodynamic performance. These lightweight and durable panels
include a curved valance below the front fascia. Air attaches to
its smooth radius at highway speeds and is directed into the
radiator. The center section of the valance bends out of the way if
the TL encounters a curb or other obstruction. Other aerodynamic
elements include a refined A-pillar shape, front and rear
deflectors, an engine undercover and a rear floor cover. These
underbody improvements benefit fuel economy, reduce wind noise and
improve high-speed stability. REDUCED WHEEL ARCH GAPS Minimizing
the visual gap between the edges of the tires and the wheel arches
was an important design goal. To retain a wide wheel track with
these narrow gaps, the TL has a special fender flange design that
allows the tires to sweep up and inside without making contact
during suspension movement. MASS REDUCTION Keeping the TL curb
weight low was a matter of the highest priority for Acura. At 1620
kg with the 5-speed Sequential SportShift automatic transmission,
it weighs just 9 kg more than the 2003 TL Type S. The TL with
Dynamic Package weighs 29 kg less, at 1585 kg. This small weight
differential between the previous and current generation models is
despite the following improvements and additions:
o Improved body rigidity o Side curtain airbags o Larger wheels
and tires o HandsFreeLink™ o 2-way power lumbar driver's seat
support o Tilt and telescope steering wheel o Wider moonroof
POWER GLASS MOONROOF The TL has the largest moonroof Acura has
ever developed. It lends a tremendous open feeling to the car,
features the convenience of new 1-touch opening and closing, and a
new anti-pinch safety feature, the first for an Acura moonroof. At
780 mm, the moonroof is wider than the previous TL moonroof. In
addition, the larger moonroof also opens deeper than that of the
previous TL. The overhang of the edge into the
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2005 Acura TL 4
opening is reduced to 41 mm from 112 in the previous TL. The
moonroof itself is virtually flush, reducing the chance of wind
noise. There is also a special flush-type seal that promotes
quietness. DUAL MODE HIGH INTENSITY DISCHARGE HEADLIGHTS
Previously, the TL had HID (High-Intensity Discharge) low beams
coupled with conventional halogen high beams. This generation TL
headlights feature HID high and low beams. These bi-function HID
high/low beams are made possible by a shutter device that
mechanically controls the light output of the HID unit. When the
driver selects high beam, an electric solenoid in the headlight
moves a shutter forward, opening up a greater reflector area inside
the headlight. When the lights are operated on low beam, this
shutter repositions to act as a cut-off to keep the lighted area
closer to the vehicle. Compared to the previous TL, the current
headlights dramatically increase the illuminated area, and are
nearly 50 percent more effective at long range. To reduce the
chance of theft, the headlight units are attached to the vehicle's
side frame rail with an additional bracket. This bracket is not
accessible once the vehicle is fully assembled, though the HID
bulbs are easily replaceable. LED LIGHTING Extensive use of Light
Emitting Diodes (LEDs) provides a high-tech image for the TL side
and rear lighting. LEDs are used for the front side marker lights,
Center High Mount Stop Lamp (CHMSL), taillights, and rear side
marker lights. These LED arrays have more uniform lighting and a
unique, modern look. They also have a quicker turn-on time and a
projected service life four times longer than normal automotive
bulbs. BUMPERS The Acura TL uses a highly efficient Xenoy
thermoplastic energy absorber with a high-strength steel
reinforcement beam that absorbs 80 percent of low-speed crash
energy. This allowed designers to reduce the overhang of the
bumper, while also reducing the weight and repair costs. Both the
front and rear bumpers meet the federal government’s damage-free
regulation when tested at 8 km/h. They are also lighter than
previous versions: the weight savings are 1.4 kg and 1.3 kg front
and rear, respectively. NOISE, VIBRATION & HARSHNESS (NVH)
CONTROL Substantial improvements in noise, vibration and harshness
were made over the previous generation TL. Measures include
advanced aerodynamic design, acoustic glass with shade band,
insulating panels under the hood and inside the trunk and the
fenders. Internal testing shows that the TL has less
higher-frequency wind noise at the driver passenger "ear point"
than its key competitors. It is also measurably improved over the
previous generation TL. Key TL NVH countermeasure areas
include:
o 5 mm side glass (vs. 3.5 mm on previous generation TL) o
Acoustically-tuned glass windshield o Aluminum-alloy front subframe
o Diffuser type mirrors with full seals o Flush-mount moonroof o
Hood insulator o Improved door-handle sealing o Improved A-pillar
shape o Improved melt sheet package o Thinsulate™
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2005 Acura TL 5
Acoustically-tuned glass windshield To reduce noise in the cabin
the TL windshield is made of 4.7 mm thick acoustic glass, which
consists of two layers of safety glass, separated by a thin
acoustic resin center. The windshield reduces road noise on smooth
asphalt significantly in the higher frequency ranges. To reduce
noise intrusion through the side glass, the front and rear movable
door glass is 5 mm thick compared to 3.5 mm for the previous TL.
Thinsulate™ Patented by 3M, Thinsulate™ insulation was developed
for thermal applications but it is also ideal for noise reduction.
It is crushable and can be put in tight-clearance areas. In the TL
Thinsulate™ is used behind the door liners, rear seat side
garnishes, center console, rear seatback and front and rear pillar
garnishes. It is also used under the instrument panel and parcel
tray. Trunk Engineers treated the trunk as an acoustic package,
containing the speaker array and trunk hinges and springs in a
rigid box structure. This improves audio bass performance, reduces
interior noise levels, enhances the appearance of the trunk
interior, and reduces the chance that belongings will be damaged by
a speaker or hinge. Aluminum-alloy front subframe Besides its low
mass, the TL aluminum-alloy front subframe reduces "starting boom"
(resonance noise). Melt Sheet The careful application of
high-density melt sheet makes a huge reduction in high-frequency
sound. Testing results shows it reduces the high frequency (approx.
500Hz and above) vibration of the TL floor panels, decreasing noise
inside the vehicle. POWER WINDOWS The TL front power windows
feature an auto-open and auto-close feature and also incorporate an
anti-pinch safety feature. The glass is 5 mm thick – up from 3.5 mm
thick in the 2003 TL – to reduce cabin noise. EXTERIOR MIRRORS A
small, aerodynamic mirror housing reduces air turbulence but it
must not compromise mirror area. To reduce the housing size
engineers devised a way to hold the mirror element from behind
instead of at the sides, and carefully controlled the gap between
the mirror element and housing to further reduce turbulence.
Blue-tinted mirrors also reduce eyestrain in bright conditions.
Engineers also measured the airflow through the channel between the
A-pillar and the mirror. By designing this channel in an expanding
V-shape, the air actually decelerates (rather than accelerates) as
it moves across the glass. This helps keep the air from tumbling
across the side glass, reducing high- and mid-frequency noise.
Engineers also positioned the mirrors forward, away from the window
glass, to further reduce wind noise while increasing the driver’s
side view. A reverse tilt function automatically tilts either the
left or right mirror down when the TL transmission is shifted into
Reverse. This is a driver-selectable function that may be turned on
or off as desired. DOORS & LATCHES To resist parking lot dings
and dents, the TL door skins are made from special 340H
high-tensile steel. This bake-hardened steel has much greater
resistance to bending and a higher
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2005 Acura TL 6
work-hardening threshold than conventional steel, making the
door skins much more resistant to dents and dings. The door skins
are 10 to 15 percent stronger with 50 percent better permanent
deform resistance than conventional steel. Door fit is a matter of
extraordinary precision on the TL. The gap is just 3.5 mm at the
leading edge of the front doors, 4 mm between the doors, and 3.5 mm
at the trailing edge of the rear doors. Acura precisely refined the
door closing sound on the TL. A door sash structure, manufactured
with a laser-welded blank, increases the rigidity of the door
sashes and reduces objectionable high frequency noise as the doors
are closed. A door lock structure absorbs sounds caused by the
latch, eliminating objectionable noise. BODY TRIM The aggressive
and sporty styling on the TL is subtly enhanced by satin trim on
the leading edge of the hood, on the grille, and above the license
plate. The B-pillar and drip moldings are high gloss black, while
aluminum step garnishes inside the door openings provide a finished
appearance. EXHAUST FINISHERS The exhaust has bright trapezoidal
finisher tips integrated into the rear styling. The tips are inset
far enough to allow adequate bumper stroke in the event of a
slow-speed collision, but are positioned far enough back to allow
exhaust gases to pass beyond the bumper. Special multi-axis rubber
mounts control the exhaust tip placement, allowing a closer fit of
the rear bumper fascia. The gap is approximately 20 mm, compared o
a gap of nearly 30 mm on the previous TL. A high heat-resistance
polypropylene garnish is clipped to the bumper to protect it from
heat. EXTERIOR PAINT The 2005 TL is available in three pearl and
two metallic exterior colours. The painting process begins when the
steel body receives a phosphate bath to completely clean it of oils
and film after welding is complete. This is followed by an
electrodeposition primer bath, where the unit body is electrically
charged to attract the primer. After baking, the colour coat is
applied, followed by a protective clear coat.
2005 Acura TL : Chassis CHASSIS OVERVIEW In a 5-passenger sedan,
benefits of front-wheel drive include lighter and more compact
engine and driveline packaging, enhanced fuel efficiency, and
increased passenger spaciousness. CHASSIS CONCEPT From a handling
standpoint, the toughest target in the TL segment is the BMW 530i
Sport. The new TL chassis was engineered to challenge this
comparison favorite. To accomplish this, engineers focused on
creating a rigid platform with performance-tuned suspension and
large tires. The large tire contact patches improve braking and
handling with all-season tires. The available Dynamic Packages with
summer high-performance tires boost acceleration, handling and
braking capability even higher on both dry and wet surfaces. The TL
has excellent dynamic properties. It feels crisp and taut, corners
flat and offers a high level of grip – even with four passengers
aboard. Noteworthy chassis features include:
o 17-inch x 8-inch aluminum-alloy wheels o P235/45R17 all-season
Bridgestone Turanza tires o Double-wishbone front suspension o
5-link double wishbone rear suspension with pillow joints for
precise control o Sport-tuned shock absorbers
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2005 Acura TL 7
o Lightweight aluminum-alloy front subframe o Special
transmission mounts for improved ride quality
Braking performance features: o 4-wheel disc brakes / ABS o
10-inch vacuum booster o Electronic Brake force Distribution (EBD)
o Brake Assist o 4-channel Vehicle Stability Assist (VSA)
The TL with Dynamic and Dynamic Navi Packages includes the
following features: o Standard 235/45R17 Bridgestone Potenza RE 030
summer high-performance tires o Brembo 4-piston front brake
calipers o Rear engine rocking damper o 17-inch aluminum-alloy
spare wheel o Helical gear-type Limited Slip Differential
HYDROFORMED ALUMINUM-ALLOY SUBFRAME To reduce mass and improve
handling agility, the TL uses an all aluminum-alloy front subframe
that carries the engine, transmission and lower suspension links.
The U-shaped subframe cradle is hydroformed. In this process, a
single aluminum-alloy tube is inserted into an immensely strong
die, which is locked closed before the tube is pressurized with
water. The resulting component is lighter and stronger than a
multi-piece component would be. The hydroformed cradle is then
attached to aluminum-alloy corner brackets to form the complete
subframe. Compared to the traditional steel subframe on the
previous generation TL, the aluminum-alloy TL subframe weighs 36
percent less – or approximately 10 kg. Besides its lighter weight,
the subframe has increased bending rigidity and reduces noise
experienced in the passenger cabin, particularly as the engine is
starting. ENGINE MOUNTS The TL has a pair of special fluid-filled
Electronic Control Mounts. Connected to the hydroformed
aluminum-alloy subframe, they reduce vibration when the engine is
idling. The transmission has its own proprietary mounts including a
special lower mount designed specifically to increase ride comfort.
Besides the lower mounts, the TL engine also has a side mount that
helps control lateral movement. And, on the TL with the Dynamic
Package, a special damper further reduces engine-rocking motion
when the driver lets the clutch out or shifts. SUSPENSION Front
Suspension The TL front suspension is a double-wishbone system with
a rigid stamped steel upper arm and a steel lower arm. The system
is functionally related to the systems used on Formula One and Indy
Racing League open-wheel race cars, and permits the best
combination of road holding, ride quality and packaging for the TL.
The system uses coil-over shock absorbers that are not stressed
suspension members. This reduces suspension friction and improves
responsiveness to bumps. Suspension camber gain is maximized
through the use of a short upper arm, while steering feel is
enhanced through a high placement of the lower arm. The upper
suspension arm is extremely rigid to reduce the transmission of
road noise into the cabin, while a special compliance bushing on
the lower arm better absorbs bumps and improves ride quality. A
steel bar connects the shock towers. Hollow, high-strength and
lightweight, it enhances chassis solidity, steering precision and
feel.
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2005 Acura TL 8
A hollow tubular steel stabilizer bar is specially tuned to the
best balance between firm handling and luxurious ride comfort. Rear
Suspension The TL rear suspension is a 5-link double-wishbone
independent system with struts, coil springs with anti-squat and
anti-lift geometry. It mounts to a steel subframe to improve road
isolation and a quiet interior. The rear suspension geometry adds
“toe-in” when the suspension is compressed, improving handling
stability over bumps and during hard cornering and braking. A
stabilizer bar further improves handling by limiting body roll,
while a special “pillow joint” for the lateral links improves
camber rigidity. Rubber shims added to the leading and trailing arm
bushings improve ride comfort. STEERING The TL uses
speed-sensitive, torque-sensing, variable power-assisted rack and
pinion steering. The engine-driven variable-output pump provides
steering feel preferred by driving enthusiasts: modest steering
effort at low speeds and precise feel at higher speeds. The
steering feel is very linear and evenly weighted. Hydraulic
steering dampers built into the system further improve stability
during cornering and at high speeds. A one-way release valve
decreases kickback in the steering wheel that can be caused by road
irregularities. The hydraulic valve closes when it senses road
irregularities, impeding disturbances to the steering wheel.
Increasing the stiffness of the steering gearbox mounting and the
rear sub frame also maximizes steering linearity. BRAKES The TL has
4-wheel disc brakes with Electronic Brake force Distribution (EBD),
Brake Assist, an Anti-lock Braking System (ABS) and 4-channel
Vehicle Stability Assist (VSA) including a Traction Control System
(TCS) as standard equipment. The front brakes are ventilated
cast-iron discs with single-piston calipers. For better fade
resistance, cooling air flows to the brakes through the front
fender air duct ahead of the front wheels. This cooling airflow
reduces the brake temperature by 46 degrees Celsius (84 degrees
Fahrenheit) in high-demand fade tests. The rear brakes are solid
discs, gripped by single piston calipers. Acura-Brembo rotors and
aluminum-alloy front brake calipers are standard on the TL's
equipped with the Dynamic Package. The calipers have four pistons
each, and more aggressive pad material, to offer improved brake
feel and reduced fade in hard repeated brake applications. They are
also 30 percent lighter than the standard calipers, saving 2 kg per
wheel, which in turn improves suspension response for better ride
and handling. The calipers feature and attractive black painted
finish with the Acura name. A single 10-inch vacuum booster is used
to reduce weight, increase stiffness and deliver more direct
braking feel. In a departure from the previous TL, a hand parking
brake is used instead of a foot brake. This applies to both
automatic and manual transmission models. Stopping distances from
100 km/h have improved considerably from the previous generation TL
Type S. Electronic Brake force Distribution A feature of the TL is
Electronic Brake force Distribution (EBD), which continuously and
automatically adjusts the pressure distribution between the front
and rear brakes depending
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2005 Acura TL 9
on how the vehicle is loaded. Brake Assist Brake Assist comes
standard on the TL. Its purpose is to help the driver apply full
braking pressure in an accident avoidance situation. To do so, a
microprocessor continually analyzes and "learns" the driver's
normal braking habits – monitoring both the rate of pressure
applied and the total pressure that the driver normally applies to
the brake system. If the driver suddenly applies the brakes, Brake
Assist brings the system to full ABS activation to help stop the
vehicle in the shortest distance possible. It is only activated
when the microprocessor detects that certain brake pedal speed and
pressure thresholds are reached. Importantly, Brake Assist does not
"take over" braking on the TL – it only assists the driver in
obtaining full braking performance in an emergency. Brake Assist
deactivates when the driver releases pressure on the brake pedal.
ANTI-LOCK BRAKE SYSTEM At each wheel, sensors monitor wheel speed
for skid. The driver first brakes, then if lock-up seems imminent,
the ABS reduces hydraulic pressure to the affected locked-wheel,
letting it regain traction before full braking resumes, a process
that can repeat more rapidly than is humanly possible. The ABS
monitors and controls each of the vehicle’s wheels. This provides
better steering control and braking stability during maximum-effort
stops, especially on slippery surfaces. VEHICLE STABILITY ASSIST
The TL is equipped with 4-channel VSA that helps the driver retain
control of the car in the event the vehicle reaches its dynamic
traction limits, for example through aggressive cornering,
encountering ice or dirt on the road, or entering a
decreasing-radius corner too fast. In the event of understeer
(where the front tires lose grip), the system applies the inside
front and rear brakes to increase yaw (vehicle “rotation”), slowing
the vehicle and enabling it to complete the turn. Engine torque may
also be reduced by coordination of the Electronic Throttle Control
(ETC) and Engine Controller. The 4-channel system controls all four
brakes independently. In the event of oversteer (where the rear
tires lose grip), the system applies the outside front and rear
brakes to decrease yaw, slowing the vehicle and enabling it to stay
on its intended path. An indicator light on the instrument panel
alerts the driver whenever the VSA system is actively enhancing the
vehicle’s stability. A cockpit switch is provided to disable the
vehicle stability and traction control aspects of the system while
leaving the ABS system fully functional. TRACTION CONTROL SYSTEM
The Traction Control System (TCS) component of VSA uses sensors
that monitor each of the wheels and a computer-controlled
modulation of engine power and front brakes to help prevent wheel
spin when starting out or accelerating. If the sensors detect
excessive front-wheel acceleration, TCS requests the Electronic
Throttle Control (ETC) and the Engine Controller to reduce engine
power and can apply brake to the affected wheel until the wheel
spin stops. This helps the TL maintain traction during acceleration
and helps the driver retain steering control, even when
accelerating on slippery surfaces. WHEELS The TL has lightweight
17-inch x 8-inch aluminum-alloy wheels. Lighter wheels contribute
to quicker suspension movement and better ride quality by
contributing to lowering unsprung weight.
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2005 Acura TL 10
Larger 18-inch aluminum-alloy wheels are available. Finished in
dark silver, they are specifically designed to fit both the TL and
TL with Dynamic Packages. TIRES The standard tire is P235/45R17 M+S
(all-season), with 235/45R17 summer high-performance tires standard
for the TL with the Dynamic Packages (winter tires are available at
Acura dealerships). These sizes are significantly wider and more
aggressive than the P205/60R16 and P215/50R17 tires of the previous
generation TL and TL Type S, respectively. The larger tires
significantly contribute to the TL design objectives including its
aggressive, athletic appearance. They also measurably improve dry
handling and braking, while reducing road noise and pattern noise.
The Dynamic Package's summer high-performance tires further enhance
dry handling, wet handling and braking, at the cost of performance
in snow and accelerated wear. In warm weather these tires
consistently outperform all-season tires in slalom speed, maximum
cornering g force, and braking distance.
Acura TL Dynamic Package Tire TL / TL Navi Package Tire Slalom
speed 111 km/h 103 km/h
Maximum lateral g force 0.90 g 0.84 g Braking distance, 96-0
km/h 37.1 m 39.9 m
Source: Internal testing The TL with Dynamic Package has a
T145/70R17 temporary spare tire. A T135/80R16 temporary spare is
used on the TL and TL with Navi Package. The advantages of a
temporary spare include maximum trunk space, and reduced vehicle
weight for better handling and fuel economy. If a TL owner
regularly experiences snow conditions, winter/snow tires are highly
recommended. For emergency situations, cable chains can be also
used.
2005 Acura TL : Interior INTERIOR OVERVIEW The Acura tradition
of interior luxury and functionality continues with an elegant and
sporting interior for the TL. The instruments and controls are
arranged to create an intimate and functional driver's cockpit that
offers a feeling of connection and control. With its higher belt
line, the TL has a substantial look and feel. Fine interior
materials and close attention to detail and finish give the TL a
tangible feeling of elegance. Interior at a Glance
o Large Passenger cabin with more headroom, shoulder room and
front legroom compared to the previous generation
o Luxurious cockpit designed for performance driving o Dramatic,
easy-to-read LED backlit analog instruments o Leather-wrapped
4-spoke steering wheel with illuminated fingertip controls for
audio,
cruise control, Acura HandsFreeLink™ o Acura Navigation System
with English/French Voice Recognition on NAVI Package
models o Tilt and telescope steering wheel o
Performance-oriented front bucket seats with perforated
leather-trimmed seating o Driver's 8-way power seat with 2-way
power adjustable lumbar support o Comprehensive safety features
including standard side curtain airbags o Acura/ELS® Premium
8-speaker surround sound system with DVD-Audio, DTS™ and
CD 6-disc changer, AM/FM Tuner and Dolby® cassette o Multi-Info
Display (MID) allows access to multiple electronic functions
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2005 Acura TL 11
o Acura HandsFreeLink™ system compatible with Bluetooth mobile
phones o Available Acura Navigation System with English/French
Voice Recognition (only with
Navi and Dynamic Navi models) o Keyless Memory Settings with two
driver profiles o Superior interior fit and finish, including a new
"seamless" instrument panel cover that
conceals the passenger SRS airbag lid o Dual-zone, dual-mode
Acura Automatic Climate Control System o Fully lined trunk with
concealed parcel shelf speakers
STYLING Compared to the previous-generation TL and TL Type S,
the 2005 TL interior has a much more dynamic and distinctive look,
yet upholds the longstanding Acura tradition of highly functional
driving environments. Given the newfound handling agility and power
built into the TL, its interior echoes a clear sporting message. At
the same time, fine details and rich surface finishes make it clear
the TL maintains its luxury roots. Sweeping aluminum-alloy accents
wrap around the doors, flow onto the instrument panel and dive down
the center console. Wood patterned accents warm the interior in
cars with Parchment and Camel leather, while Ebony interiors have
carbon fiber-look accents that create a technical edge.
DRIVER-ORIENTED COCKPIT The TL interior puts all important systems
and controls within easy reach of the driver. The systems used most
frequently – audio, cruise control, Acura HandsFreeLink™ (if
equipped) and Acura Navigation System with English/French Voice
Recognition (if equipped) – have satellite controls positioned on
the steering wheel. The LED backlit instrumentation is easy to
read, and the switchgear and displays have an uncluttered look and
intuitive operation. Helpful features make driving easier, like
power rearview mirrors that can be set to automatically tilt-down
when reverse is engaged to make parking easier. With a driver's
8-way power seat and a tilt/telescoping steering column, the TL can
accommodate a wide range of drivers. One-touch moonroof switchgear
is located in the overhead console. A Sequential SportShift
selector has been simplified for easier, more intuitive use. And
the optional Dynamic and Dynamic Navi models add a short-throw,
close-ratio 6-speed manual gearbox. To better work with the manual
gearbox, the TL parking brake is a hand brake within easy reach on
the center console. There is also a bottom-hinged throttle pedal
with a more linear feel and natural motion. LEATHER-WRAPPED
STEERING WHEEL The driver can control multiple electronic functions
using thumb-operated buttons on the steering wheel. The most
commonly used cruise control, HandsFreeLink™ (if equipped), and
audio controls are within easy reach. If equipped with the Navi
Package, two additional buttons handle voice activation for
navigation and provide voice access to other features. SEATING
Proper seat support helps foster a sense of connection with the
car, and provides a useful avenue for dynamic chassis feedback to
the driver. The TL driver's seat has substantial side and shoulder
bolstering to keep the driver in place during aggressive cornering.
Given the sporting/luxury TL mission, the 8-way power seat with
2-way power adjustable lumbar support is engineered for long-haul
comfort in addition to sporting support. Standard perforated
leather-trimmed seating breathes for comfort, while an additional
22 mm to the base cushion base cushion provides added hip room.
Vertical travel of the standard power seat mechanism has been
increased with 3 mm more "up" travel and 10 mm more "down" travel.
All driver's seat power adjustments are included in Keyless Memory
Settings, a system that stores a pair of user profiles linked to
the two key fobs that come with the TL. For proper support of a
wide range of potential drivers, the TL driver's seat has a two-way
power adjustable lumbar support mechanism. Unlike lumbar supports
that sometimes have a sharp-edged feel, the TL system has a smooth
shape that matches the spinal curvature to provide solid support
for the torso and pelvis. The stroke of the lumbar support unit has
been increased 13 mm in the TL.
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2005 Acura TL 12
The front passenger seat is four-way power adjustable and has a
fixed lumbar support. With their carefully engineered shape –
complete with side bolstering – the outboard rear seats blend
luxury with sporting support. Four-way front headrests are
adjustable for height and tilt; the rear outboard headrests adjust
vertically. LED INSTRUMENTATION/INTERIOR LIGHTING Cleanly classic
analog instrumentation keeps the TL driver in tune with the
vehicle. The black-faced, LED backlit meters are highly legible day
or night and have a technical "3D" appearance. The progressive
self-illuminating gauge package gives the car a "welcoming" feel.
When the door is first opened, the instrument lighting comes to
life, then brightens progressively to 100 percent when the key is
put in the ignition. The illuminated instrument needles and
enunciator lights come alive when the ignition is turned on,
indicating that the car is ready to go. At the end of the drive,
the instrument lighting dims progressively. All the interior
switches are illuminated to make them easy to find, including those
on the steering wheel and all four doors. Blue LEDs in the overhead
console cast a subtle ambient glow on the center console area and
like all the meter lights, are controlled by a dimmer mounted on
the left side of the instrument panel. Map/reading lights at all
positions are now brighter and more focused, to provide better
illumination with less driver distraction. A master light switch is
positioned in the overhead console for easy reach. The TL interior
lights feature "theater dimming," which can be set by the driver to
any of three rates via the Multi-Info Display (MID). INTERIOR
ROOMINESS Relative to its predecessor, the current generation TL
has gained interior space in key areas. The cabin has over 28 L
more volume. More important, headroom has been increased front and
rear; there's a 13 mm more clearance in front, and 20 mm more in
back. Front legroom has increased incrementally, and, and front
shoulder room has been boosted by a substantial 56 mm – making it
one of the best among the car's immediate competitors. Re-contoured
front seatbacks open an additional 30 mm of knee room for back seat
passengers. Front and rear, the TL has a flat floor with ample foot
room. CARGO CARRYING VERSATILITY Careful attention to the trunk
shape and layout allows it to carry two extra large and two medium
hard suitcases, or clubs and duffel bags for four golfers. For
longer items, a lockable rear-seat trunk pass-through can
accommodate up to four sets of skis and poles. Attention to detail
improves the finish and functionality of the TL trunk. Designed as
a total acoustic package, it's completely lined throughout with all
wiring concealed, and the rear parcel shelf speakers and navigation
unit fully protected. Enclosed hinge mechanisms minimize the
potential for damage to luggage and a standard cargo net with a
total of ten possible anchor points helps to secure objects. The
spare tire is located under a tri-folding cover in the trunk floor
and has a foam insert that keeps the jack and tools from rattling.
The trunk can be opened via a release mounted on the dash low and
on the driver's left, remotely with the key fob, or with a manual
release accessible through the lockable trunk pass through. There
is also an anti-trap release inside near the latch. For security,
the trunk main switch is located in the glove box, which can be
locked to prevent access by valets. A valet key is provided that
will allow a parking attendant to operate the ignition, but will
not open the glove box, trunk, or rear seat pass-through. COMFORT
AND CONVENIENCE ITEMS Thoughtful, comfort and convenience items are
integrated into the interior of the TL. There are slide-out cup
holders in the front console and rear seat armrest that each handle
two large drinks. There's a generously sized glove box, and the
front doors have swing out rigid map pockets with removable
sunglasses holders. Two covered storage areas are in the console
immediately in front of the shifter; one holds four CD jewel cases,
while the other has a rubber mat in the bottom and a 12-volt
accessory socket. There's room for another 10 CDs or six DVD-A
cases inside the main center console beneath the armrest. This
2-tier design has a leather-covered sliding armrest (with more fore
and aft travel than that of the previous
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2005 Acura TL 13
generation TL) and a flocked upper tray for cell phone storage.
A removable coin holder is built in, as is a 12-volt accessory
outlet. Rigid seat-back map pockets have a clean, elegant look.
Overhead, a roof console that incorporates a HomeLink™ universal
garage door opener. HIGH QUALITY INTERIOR FINISH Substantial
advances in fit and finish are in the TL's interior. Upscale
details include soft stitched passenger grab handles and concealed
front seat belt D-rings, soft cloth headliner and roof pillar
covers. Key interior accent panels are made of an aluminum alloy.
Flush fits between the roof pillar linings and the headliner, flush
interior door handle recesses and reduced panel gaps throughout the
interior gives the TL a sleek and tailored appearance. To ensure
uniform fit and perfect seams, the perforated leather-trimmed
seating is sewn on automated machines. For a more integrated
appearance, the TL uses a "slush molded" instrument panel covering
that completely conceals the passenger-side SRS airbag. Almost
everywhere, soft materials and satin finishes are used in places
the driver or passenger is likely to touch, including soft interior
door grab handles, padded door armrests, leather center console,
leather fold-down rear armrest, and the leather wrapped steering
wheel. DUAL-ZONE, DUAL-MODE ACURA AUTOMATIC CLIMATE CONTROL SYSTEM
To keep the interior comfortable regardless of the weather outside,
the TL has a dual-zone, dual-mode Acura Automatic Climate Control
System. This system lets the driver and front passenger set the
temperature to their individual liking, plus they can each choose
the airflow mode they like. A pair of adjustable vents in the rear
of the center console keeps the back seat area comfortable. Large,
simple to use controls make the system straightforward to use, even
on cars equipped with the available Acura Navigation System with
English/French Voice Recognition. With a full set of conventional
button-type controls for the climate control system, it is not
necessary to access some climate control adjustments through the
NAVI on-screen menus. 3-D Solar Sensing With its position-sensing
ability, the navigation system contributes to overall passenger
comfort with 3D Solar Sensing. Based on its continuously updated
vehicle position information, the NAVI system can determine the
position of the sun relative to the driver and passenger. With this
information, the Acura Automatic Climate Control System
automatically adjusts the temperature and system airflow from
side-to-side as needed to compensate for asymmetrical solar
heating. Navigation-equipped cars also offer the convenience of
voice operation for some climate control functions. INTERIOR COLOUR
& TRIM COMBINATIONS To accommodate a wide range of buyer
tastes, the TL interior comes in an array of colours. The
perforated leather-trimmed seating is available in Parchment, Camel
and Ebony. Some of the available five exterior colours are offered
with two interior colour choices. Accent features vary based on the
interior colour. Parchment and Camel interiors have aluminum-alloy
panels with rich wood grain accents. Ebony interiors have
aluminum-alloy panels with carbon fiber-look accents. KEYLESS
MEMORY SETTINGS A keyless entry system called Keyless Memory
Settings gives the TL a high level of luxury and convenience by
providing access to expanded memory functions in English and
French. Two keyless entry fobs are provided with the TL; each fob
can be linked to one of two driver profiles. As in the previous
generation TL, the key fob used to unlock the car triggers a
specific driver profile and the system automatically positions the
power driver's seat and outside mirrors to match that profile.
Keyless Memory Settings go several steps farther, however, by
including in the driver profile the climate control system and all
seven of the customizable memory functions that are available via
the Multi-Info Display (MID). A number of functions are available
via the key fob when outside the car. A single push of the "unlock"
button will unlock only the driver's door; a second push unlocks
all the doors. After
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2005 Acura TL 14
unlocking all doors, holding down the "unlock" button down for
more than one second will open the windows and moonroof to
ventilate the car's interior. Still more functions are available
with the key in the lock on the driver's door. A single twist
unlocks only the driver's door; a second twist unlocks all the
doors. If you hold the key in the unlock position for more than one
second, the moonroof and all the windows begin to open; return the
key to the normal position and the windows stop. When leaving the
car, holding the key in the "lock" position will close the moonroof
and all windows. PREMIUM SOUND SYSTEM In keeping with the Acura
approach of offering premium audio as standard equipment, the TL is
outfitted with a cutting edge sound system that takes advantage of
the latest advancement in sound reproduction. This sophisticated
eight-speaker audio system was the first North America automotive
application of DVD-A technology and has six different audio
channels to create an accurate surround sound listening
environment. There are speakers on the top of the instrument panel
near the A-pillars, plus a center-fill speaker in the middle of the
dash top. The two front doors each have a large driver, and in the
rear parcel shelf there are two more drivers flanking an 8-inch
subwoofer. In addition to the standard bass, treble, fader and
balance controls, the system features additional subwoofer and
center channel level controls. Program material comes from a wide
variety of sources. There is an AM/FM tuner coupled with a powered,
active glass antenna in the rear window to pull in weaker signals.
In addition, the TL system will also play conventional cassettes.
CDs, DTS discs and DVD audio discs can be loaded into the 6-disc,
in-dash changer. DVD audio is the next step in audio reproduction
technology. Many new releases are being issued in this format, and
many older recordings are being re-mastered and reissued to take
advantage of the superior sound that DVD audio offers. With
resolution over 500 times higher than CD audio, DVD audio delivers
smoother, fuller and far more accurate sound through six discrete
channels. The TL was the first North American standard production
application of this new technology. (The system will not play DVD
movies, DVD-V, DVD-R/RW. MP3 or WMA media.) To make this capable
system simple to operate, steering wheel-mounted controls of key
functions are positioned within fingertip reach. On cars equipped
with the Acura Navigation System with English/French Voice
Recognition, select audio system functions can be accomplished via
voice commands. MULTI-INFO DISPLAY (MID) To keep the driver
informed of the car’s status and to access multiple electronic
functions the TL has a standard Multi-Info Display (MID) in English
and French. This LED backlit screen and its push-button controls
are located on the right side of the instrument cluster. The MID is
the interface for odometer/trip odometer, outside temperature, trip
computer, custom memory settings, HandsFreeLink™ (if equipped) and
vehicle warnings. Maintenance Minder alerts are also presented via
the MID (see the Engine section of this press kit for more detail
on Maintenance Minder). The MID makes it easy to customize the
function of many electronic features in the TL. Custom settings
include automatic door locking/unlocking, door unlock selection,
keyless acknowledgement feedback, security re-lock timer, headlight
auto-off timer and interior light dimming timer. To make it easy to
track warnings (such as “Check fuel cap,” or Maintenance Minder
warnings) displayed on the MID, a memory feature lets you scroll
through previous warnings for review. HandsFreeLink™ To improve
driving safety and convenience, the TL has HandsFreeLink™ system
that is designed to work with many recently manufactured
Bluetooth-enabled mobile phones (sold separately). Bluetooth is a
radio frequency-based cable replacement technology that lets
portable devices like PDAs, mobile phones, laptops and other
devices communicate wirelessly.
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2005 Acura TL 15
The TL system is compatible with Bluetooth enabled cell phones
that have the Hands Free Profile (HFP). Some early
Bluetooth-enabled phones do not have this communications protocol,
but any newly released phones should have the HFP. After an
initial, one-time “pairing” process, the TL communicates wirelessly
and securely with the driver’s cell phone when it’s within about 3
m of the car. The phone needs to be on, but can be stowed in a
pocket, briefcase or purse – anywhere inside the vehicle cabin.
HandsFreeLink™ allows the driver to send or answer calls without
taking his or her hands from the steering wheel. When a call comes
in, the number of the incoming caller is displayed on the
Multi-Info Display (MID) located in the instrument cluster. The
phone ring tone is also played over the audio system. If the driver
chooses to answer the call, a press of the steering wheel-mounted
“Pick up” button mutes the audio system and the incoming caller is
heard over the audio system speakers. A microphone located in the
overhead console picks up the driver’s voice. Algorithms built into
the HandsFreeLink™ system cancel “echo effect” and reduce
background noise to improve the transmission quality of the
driver’s speech. To send a call hands free, the driver can dial the
number by voice in English, again using fingertip controls mounted
on the steering wheel to activate the system. The driver also can
store up to 50 frequently called numbers with voice tags in the
system’s memory. Up to six different compatible mobile phones can
be paired with the HandsFreeLink™ system. ACURA NAVIGATION SYSTEM
WITH ENGLISH/FRENCH VOICE RECOGNITION The latest generation of
Acura Navigation System with English/French Voice Recognition is
available with the TL only in vehicles equipped with the Navi
Package. With a large 8-inch display, a huge database covering 8.7
million points of interest, plus expanded voice-recognition
capabilities, this system is exceptionally capable and easy to use.
The French-language recognition software was developed in Canada
specifically for French-Canadian vocabulary and accents. Acura
Navigation System with English/French Voice Recognition features
summary
o 8-inch screen is the largest ever offered in an Acura vehicle
o Fast route calculation and search speed o Voice recognition
function with 180 total commands (in either English or French)
minimizes the need for keyboard entry o 8.7 million points of
interest are stored on a DVD o Business and recreation directory of
virtually the entire continental United States and
parts of Canada, complete with phone numbers. o Directory
categories include restaurants (searchable by type of cuisine),
lodging,
shopping, airports, hospitals, recreation areas and much more. o
Split-screen mode features a simultaneous "map view" and selective
"3-D" route
visualization o Audio system automatically mutes the front
speakers for turn-by-turn voice guidance
in either English or French voice (which can be turned off at
any time) o User selectable Day/Night screen modes o Destination
memory recalls current trip addresses, previous destinations and
user
address books o Displays in U.S. miles or kilometres o Voice
Recognition operates key audio and climate control functions o Make
calls to on-screen points of interest with HandsFreeLink™ o
Recognizes both Canadian English and French when selected
Based on positioning data from orbiting Global Positioning
Satellites (GPS), the Acura Navigation System with English/French
Voice Recognition system tracks the vehicle's position. If the
antenna (located on the rear parcel shelf) is blocked by a tunnel,
tall building or parking garage, an internal gyroscopic system and
a speed sensor track the location of the vehicle to keep the
mapping information current and reliable until satellite reception
is restored. A DVD is located in the trunk in the system's ECU.
Updated DVD data discs will be available on an annual basis.
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2005 Acura TL 16
The system can be controlled by voice, the conveniently
positioned touch-screen display or via joystick positioned just
below the display. For voice operation, the driver simply presses
the "Talk" button on the steering wheel and says any of a number of
preset command phrases in English or Canadian French when the
language is selected. The system responds to a total of 180 phrases
in both languages that are accessible through a variety of
sub-menus. When the "Talk" button is pressed, the front speakers of
the audio system are automatically muted, and a microphone located
in the overhead console receives the command. Commands can be given
in plain English (or French), such as "Find nearest hospital,"
"Display gas stations," or "Find nearest Chinese restaurant." You
can choose to display points of interest on the map (i.e.
restaurants, or grocery stores), or have the system provide
turn-by-turn navigation – all by voice. The extensive point of
interest database includes phone numbers, which can be called
easily in English mode using the HandsFreeLink™ system and the
driver's cell phone. The Acura Navigation System with
English/French Voice Recognition can also be controlled via the
touch screen by choosing menu options or spelling out a word (e.g.,
an address, business name or place) using a touch-sensitive
on-screen keypad. The display's matte finish reduces glare and
smudging, and the keypad can be set to alphabetical or a common
typewriter style (or Qwerty-style) layout. Alternately, the
joystick can be used to highlight menu options or to highlight
specific letters on the keypad to complete a word.
2005 Acura TL : Powertrain POWERTRAIN OVERVIEW The 2005 TL is
powered by an aluminum-alloy 3.2-litre V6 that uses advanced Acura
technology to provide an exceptionally high level of power and
refinement. The VTEC V6 generates 270 horsepower and 238 lbs.-ft.
of torque – far outpacing the previous generation TL (225
horsepower and 216 lb.-ft.), and even the TL Type S (260 horsepower
and 232 lb.-ft.). Compared to the previous generation TL, the
current engine delivers similar fuel economy in both city and
highway usage when paired with the standard 5-Speed Sequential
SportShift automatic transmission. In terms of emissions
performance, however, it is able to meet the California Air
Resource Board's more stringent LEV 2 ULEV requirements. The 2005
TL offers a 6-speed manual transmission with the Dynamic Package
and the Dynamic Navi Package. With short shift throws,
closely-spaced ratios and slightly shorter (higher numerically)
overall gearing, the Dynamic Package is targeted at drivers
interested in extracting the maximum performance – and hands-on fun
– out of the most powerful V6 engine in the class. A helical
gear-type limited-slip differential is standard equipment with the
Dynamic Package and the Dynamic Navi Package, providing maximum
grip and handling stability under heavy acceleration. POWERTRAIN AT
A GLANCE Engine
o 3.2-litre, SOHC, VTEC V6 engine produces 270 horsepower at
6200 RPM and 238 lbs.-ft. of torque at 5000 RPM
o Additional torque from 3500 RPM to redline (when compared to
the previous-generation TL Type S)
o Intake-side three-rocker VTEC (Variable Valve Timing and Lift
Electronic Control) o 11.0:1 compression ratio o High flow cold air
induction system o High flow exhaust system with close-coupled and
under-floor catalytic converters o 2-stage tuned intake manifold o
Drive-by-wire throttle control system o Programmed Fuel Injection
(PGM-FI) o Direct ignition system o Serpentine accessory belt o
Maintenance Minder system optimizing service intervals
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2005 Acura TL 17
o 168,000 km tune-up interval
Emissions/Fuel Economy o Compact in-head exhaust manifolds o
High-flow close-coupled catalytic converters plus under-floor
catalytic converter o High capacity 32-bit RISC processor Engine
Control Unit (ECU) o Able to meet CARB LEV-2 ULEV standard, which
cuts NOx output by 75% compared to
LEV-1 LEV o Estimated fuel economy of 11.7 / 7.7 L/100km
(City/Highway, 5 AT) and 11.6 / 7.6
L/100 km (City/Highway, 6 MT) *Preliminary fuel economy
estimates determined by internal testing. Use for comparison
purposes only.
6-Speed Manual Transmission (with Dynamic and Dynamic Navi
Packages)
o Close-ratio spacing for maximum performance o Lightweight
high-pressure-cast aluminum-alloy transmission housing o Multi-cone
synchronizers used on first through fourth gear o Reverse lock-out
feature prevents accidental engagement o Advanced clutch torsion
mechanism reduces gear noise o Helical gear limited-slip
differential reduces wheel spin and maximizes acceleration
5-Speed Sequential SportShift Automatic Transmission o
Quick-response Sequential SportShift allows semi-manual operation o
Coordination between Electronic Throttle Control and transmission
makes quicker,
smoother shifts o Intuitive 5-position shift gate (replacing
8-position) o Advanced shift-hold control limits shifts during
aggressive driving o Lockup torque converter designed for superior
fuel economy o Advanced Grade Logic Control System reduces gear
"hunting" when driving on steep
hills o Linear solenoid direct-acting control reduces shift
shock and improves smoothness
Noise, Vibration & Harshness (NVH) o Highly rigid
aluminum-alloy block with cast-in iron cylinder liners o
Automatically tensioned, maintenance-free serpentine accessory
drive o 60-degree V-angle for inherently smooth operation o
Dual-mass flywheel (with Dynamic and Dynamic Navi Package) reduces
driveline noise
and vibration
ENGINE ARCHITECTURE The current generation TL 3.2-litre VTEC V6
builds on the technology of the previous generation TL Type S
engine that preceded it, and incorporates many refinements and
improvements. The 24-valve, 3.2-litre V6 features aluminum-alloy
construction and has a compact, smooth firing 60-degree V-angle. A
cold-air induction system coupled with Acura's sophisticated
dual-stage intake manifold, 3-rocker VTEC system, increased
compression ratio, new close-coupled catalytic converters and high
flow exhaust deliver the highest horsepower in its class, combined
with exceptional smoothness and extremely low emissions. ENGINE
BLOCK The lightweight die-cast aluminum-alloy block has cast-in
iron cylinder liners. These thin-wall liners are made using a
centrifugal spin casting process that ensures high strength and low
porosity. With rough outer surfaces, these liners bond securely to
the surrounding aluminum, enhancing liner-to-block rigidity and
heat transfer. For rigid crankshaft support and minimized noise and
vibration, the block incorporates a deep-skirt design with four
bolts per bearing cap. The block assembly is also heat-treated for
greater strength. CRANKSHAFT / PISTONS / CONNECTING RODS The
crankshaft is based on that of the 2003 TL Type S. The
counterweights have been adjusted to accommodate the slightly
heavier high compression pistons. With taller, reinforced crowns,
these pistons reduce the squish volume (the mixture trapped between
the pistons and
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2005 Acura TL 18
the cylinder head) and raise the compression ratio (relative to
the 2003 TL Type S) from 10.5:1 to 11.0:1. The forged steel
connecting rods carryover from the Type S. CYLINDER HEADS / VALVES
Cylinder heads are an important factor in improving power and
emissions performance. A key feature of the cylinder heads is the
integrated exhaust manifold that is part of the cylinder head
casting. Made of pressure-cast, low-porosity aluminum, the heads
help keep overall engine weight down. Each cylinder head feeds
directly into a close-coupled catalyst. To ensure positive sealing,
the TL applies a three-layer type head gasket like that of the MDX
luxury sport-utility vehicle and Acura's exotic NSX. A single
Aramid-fiber reinforced belt drives the overhead camshafts. VTEC™
(VARIABLE TIMING AND LIFT ELECTRONIC CONTROL) Acura VTEC™ (Variable
Timing and Lift Electronic Control) gives the TL engine strong
low-speed torque and response coupled with class-leading high RPM
horsepower. The TL VTEC system has two distinct modes of operation
for the engine's 12 intake valves. At low speeds, the intake valves
have low lift and are open a comparatively short period of time
during cylinder filling. At high RPM where breathing is critical,
the valves switch to high-lift, long duration mode to deliver the
best volumetric efficiency possible. The VTEC changeover point
occurs at 4700 RPM, takes just 0.1 second and is undetectable to
the driver. In the current generation TL, the VTEC system continues
to be the 3-rocker type, which allows each of a given cylinder's
intake valves to be controlled by its own low-speed cam lobe. (By
comparison, with 2-rocker VTEC, both intake valves in a given
cylinder are controlled by a single low-speed cam lobe). With
different low-speed cam profiles for each intake valve, 3-rocker
VTEC allows for staggered valve opening and lift. This promotes
swirl in the combustion chambers, which improves efficiency. With
better mixing in the cylinders, burn speed and combustion stability
are improved. When engine RPM reaches 4700 RPM, the Powertrain
Control Module (PCM) triggers the opening of an electric spool
valve that routes pressurized oil to small pistons in the intake
valve rocker arms. These pistons slide into position to lock
together the three intake rockers in a given cylinder, which then
follow a single high-lift, long-duration cam lobe. With the
engine's intake valve lift and opening duration continuously
adjusted to suit the operating engine speed, the TL benefits with a
broad torque curve and superior peak power. COLD-AIR INDUCTION
SYSTEM Cool air is denser than hot air and allows an engine to make
more power by packing more oxygen per given volume. To capitalize
on this, the TL has a special cold-air induction system as standard
equipment. Ambient air is picked up, through an inlet in the left
front fascia, and fed by a duct to the engine air intake. Depending
on vehicle speed, this system supplies the engine with ambient air
that is up to 8 degrees Celsius (15 degrees Fahrenheit) cooler than
typical engine compartment air. A low-restriction induction system
improves breathing in the TL. In addition to providing a more
aggressive sound under acceleration, this system flows 40 percent
more air than the system in the 2003 TL, and approximately four
percent more than in the 2003 Type S. DUAL-STAGE INTAKE MANIFOLD
Like the previous TL Type S and the 2003 MDX, the current
generation TL has a dual-stage intake manifold. Working in concert
with VTEC, this manifold improves low-speed torque without
sacrificing high RPM power. The manifold is divided into two banks
with three cylinders fed by each bank. The Powertrain Control
Module (PCM) controls butterfly valves between each bank. At low
engine speeds the valves are closed; each separate bank of the
manifold is tuned to maximize the resonance effect of the incoming
air and increase cylinder filling and torque through the lower part
of the engine's RPM range. As engine RPM rises, the resonance
effect fades, and the butterfly valves connecting the two banks of
the intake manifold open. With the resonance from individual
pressure pulsations is eliminated, an inertia effect helps the mass
of air rushing down each intake passage. This
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2005 Acura TL 19
provides more charge than each cylinder would normally ingest,
working like mild supercharging to enhance horsepower at high
engine speeds. The manifold changeover RPM is set somewhat lower in
the RPM range than the VTEC changeover RPM. This works to smooth
and broaden the torque delivery, with more than 75 percent of the
peak torque is available from 2100 RPM to 6500 RPM. DIRECT IGNITION
AND DETONATION-KNOCK CONTROL Optimum ignition spark timing is
crucial to engine power and efficiency, and varies based on engine
load, RPM, temperature and other factors. The Powertrain Control
Module (PCM) monitors engine functions to determine the best spark
timing. An engine block-mounted acoustic detonation-knock sensor
“listens” to the engine. Based on this input, the PCM retards the
ignition timing incrementally to prevent potentially damaging
detonation. Platinum-tipped sparkplugs are applied, each with an
individual coil unit positioned above in the access bore, require
no service prior to 168,000 km. PROGRAMMED FUEL INJECTION (PGM-FI)
The Programmed Fuel Injection (PGM-FI) system tracks several engine
inputs including throttle position, intake air temperature, water
temperature, intake manifold pressure, etc. and monitors the exact
state of the exhaust gas. Based on these inputs PGM-FI determines
when to trigger and how long to keep open the high efficiency
multi-hole injectors that deliver fuel to each cylinder.
DRIVE-BY-WIRE THROTTLE CONTROL SYSTEM Like the TSX sports sedan,
the TL engine has advanced Drive-by-wire throttle control system –
technology that eliminates the need for a conventional throttle
cable. With the driver's throttle pedal movements interpreted
electronically, the precise relationship between pedal movement and
throttle butterfly valve opening can be varied to suit the driving
conditions. By altering the amount of "gain" between the pedal and
butterfly valve, significant improvements in drivability are
possible. The Drive-by-wire throttle control system also allows the
Sequential SportShift automatic transmission and Vehicle Stability
Assist (VSA) with traction control to be fully integrated into
engine function. The ETC system monitors various parameters such as
pedal position, throttle position, road speed, engine speed and
gear position. These inputs are then used to set the
moment-to-moment relationship between pedal position and throttle
butterfly opening. In low-speed driving, the system has relatively
little gain, so that engine response is smooth and progressive for
smooth launches from a standing start. At higher speeds, the gain
progressively increases to provide confident acceleration for
passing and climbing hills. HIGH-FLOW EXHAUST SYSTEM WITH
CLOSE-COUPLED CATALYZERS To reduce weight and move the engine's two
primary catalytic converters as close as possible to the combustion
chambers, the TL exhaust manifolds are cast directly into the
cylinder heads. A 900-cell per-square-inch high efficiency
converter mounts directly to the exhaust port of each cylinder head
for extremely rapid converter light off after the engine starts.
This mounting system has the added benefit of eliminating
traditional exhaust header pipes, which saves a total of 8 kg. To
ensure optimum flow and reduce backpressure, a hydroformed 2-into-1
collector pipe carries spent gases down to a 350 cell-per-inch
secondary converter under the passenger cabin. Because these
smaller silencers are easier to package, the rear of the TL has a
more refined appearance, finished by dual trapezoidal exhaust
outlets that are tightly integrated into the rear fascia. EMISSIONS
CONTROL To develop class-leading power while meeting tight
California Air Resources Board (CARB) LEV 2 ULEV emissions
standards, the TL pushes technology on multiple fronts. It makes
more horsepower while creating less exhaust emissions – and is
certified to this level of emissions performance for 193,000 km or
32,000 km more than required by the current LEV standard.
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2005 Acura TL 20
The cylinder head-mounted close-coupled catalysts ensure very
quick light off after engine start up, and a new 32-bit RISC
microprocessor in the Powertrain Control Module (PCM) boosts
computing power. High efficiency multi-hole fuel injectors deliver
fuel to each cylinder and direct fuel around the intake valve stem
for improved atomization, which helps to further reduce emissions,
particularly after starting. NOISE, VIBRATION AND HARSHNESS (NVH)
CONTROL The TL has an inherently smooth-running 60-degree V-angle
and a compact, rigid and lightweight die-cast aluminum-alloy block
assembly. A rigid forged crankshaft, die-cast accessory mounts, and
a stiff, cast aluminum-alloy oil pan also contribute to overall
engine smoothness. Both the induction tract and the lightweight
exhaust system have been tuned to create a refined, sporty engine
sound at large throttle openings and high RPM. 168,000 KILOMETRE
TUNE-UP INTERVALS With long-lasting components such as
platinum-tipped spark plugs and a space-saving, self-tensioning
serpentine accessory drive belt, the TL is an exceptionally low
maintenance automobile. It requires no scheduled maintenance until
168,000 km, other than periodic inspections and normal fluid and
filter replacements. This first tune-up includes water pump
inspection, valve adjustment, and replacement of the cam-timing
belt and sparkplugs. MAINTENANCE MINDER The TL has a Maintenance
Minder system that automatically monitors the vehicle's unique
operating condition to indicate to the driver when maintenance is
required. Maintenance alerts are presented when the ignition is
first turned on, not while driving to prevent driver distraction.
The system monitors engine operating conditions such as oil and
coolant temperature and engine speed to determine the proper
service intervals. The Multi-Info Display (MID) located below the
fuel and engine temperature gauges in the instrument cluster
indicates the remaining percentage of engine oil life, and then
shows service is due with a "wrench" icon. A percentage-based
countdown to the next service is displayed when the car is within
15 percent of the end of the service interval. A letter and number
code is displayed to indicate the specific type of service that is
required. If the service is missed, the MID indicates past-due
mileage to express the urgency of the required service to the
driver. The system is designed to eliminate unnecessary maintenance
procedures, environmental impact and expenses, while ensuring that
important service issues are addressed. In some cases, oil change
intervals can extend to a maximum of 16,000 km, which could save
the owner considerable money and inconvenience over the life of the
car. The system can be reset by the owner and monitors all normal
service parts and systems, including oil, oil filter, tire
rotation, air-cleaner, automatic transmission fluid, spark plugs,
timing belt, coolant, brake pads and more. 6-SPEED MANUAL
TRANSMISSION (with Dynamic and Dynamic Navi Packages) To further
sharpen the enthusiast edge of the TL, it's offered with an
optional "Dynamic or Dynamic Navi Package" equipped with a
close-ratio 6-speed manual transmission. This precise, short-throw
unit is the same transmission offered in the 2003 3.2CL Type S.
It's designed to take advantage of the high power and torque of the
TL engine and give enthusiast drivers maximum control and
responsiveness. This compact transmission is about the same size as
a comparable 5-speed manual and is substantially lighter than the
5-speed Sequential SportShift automatic transmission. It features a
high-pressure-cast aluminum-alloy transmission housing to save
weight. To further reduce weight and size, special narrow,
high-strength steel gears are used, and the shafts are hollow.
Close ratio spacing helps provide quicker acceleration by keeping
engine RPM up close to the power peak. Brass multi-cone
synchronizers are used on first through fourth gear with a
single-cone synchronizer for reverse to reduce shift load and help
ensure smooth, precise shifting. A large gear-teeth contact area
helps to reduce gear noise. A reverse lockout feature prevents the
transmission from accidentally being shifted into reverse while the
car is moving forward.
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2005 Acura TL 21
CLUTCH AND DUAL-MASS FLYWHEEL (with Dynamic and Dynamic Navi
Packages) The TL has a compact clutch unit that's self-adjusting
for consistent pedal height, feel and effort throughout its service
life. This innovative clutch system automatically picks up the
slack between the pressure plate and clutch disc and lowers release
loads while maintaining consistent pressure for the diaphragm
spring. To reduce drivetrain shock and limit the torque load on
transmission components, the clutch includes a one-way delay
orifice (or check valve) located in the slave cylinder that
restricts return fluid flow during rapid clutch engagement. This
makes the clutch engagement more gradual during aggressive release.
A dual-mass flywheel helps to reduce noise, the transfer of engine
vibration into the cabin and provide increased comfort during
shifting. This unit is divided into two flywheels with a torsion
spring and viscous damper sandwiched between the two. This design
enhances the durability of the synchronizers, reduces vibration and
gear rattle and reduces the shift load. LIMITED-SLIP DIFFERENTIAL
(with Dynamic and Dynamic Navi Packages) When equipped with the
optional Dynamic or Dynamic Navi Package, the TL features a
standard Limited-Slip Differential (LSD). This helical-gear-type
LSD enhances traction during acceleration and reduces understeer in
high load cornering situations. A set of helical gears mounted
within the ring gear responds to wheel spin at either front wheel
by directing torque from the spinning wheel to the wheel with the
best traction. This system improves traction when cornering, and
when negotiating slippery surfaces or surfaces where traction is
uneven. 5-SPEED SEQUENTIAL SPORTSHIFT AUTOMATIC TRANSMISSION To
combine the convenience of an automatic transmission with the
precise driver-oriented control of a manual, the TL features a
5-speed Sequential SportShift automatic. Five closely spaced ratios
help deliver strong acceleration combined with a high level of fuel
efficiency at cruising speed. The Drive-by-wire throttle control
system allows the engine and transmission to coordinate their
functions electronically, resulting in much quicker and smoother
shifts. When in automatic mode, the transmission incorporates an
advanced Grade Logic Control System and Shift Hold Control to
reduce gear "hunting" and unnecessary shifting. To cut down on
unnecessary shifting when negotiating winding roads, the Sequential
SportShift automatic incorporates improved logic called Shift-Hold
Control. When the throttle is suddenly released and the brakes are
applied, as is the case when decelerating at the entrance of a
corner, Shift-Hold Control can keep the transmission in its current
(lower) ratio as it negotiates the corner and accelerates out. This
feature leaves the chassis undisturbed by excess shifting, and
ensures that abundant power is available without a downshift at the
exit of the corner. The 5-speed automatic alters its shift schedule
when traveling uphill or downhill to reduce shift frequency, and
improve speed control. Throttle position, vehicle speed and
acceleration/deceleration are continuously measured, then compared
with a map stored in the transmission computer. The Grade Logic
Control System then determines when the car is on a hill and
automatically adjusts the shift schedule to hold the engine in a
lower gear for better climbing power or increased downhill engine
braking. Manual Mode Operation The Sequential SportShift
transmission can be shifted into manual mode by moving the selector
lever laterally to a special gate to the left of the "Drive"
position. When in the manual gate, a forward push selects a higher
gear and a rearward pull selects a lower gear. Special shift logic
in manual mode delivers quicker, firmer shifts than in fully
automatic mode. An LED display in the instrument panel indicates
which gear the transmission is in.
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2005 Acura TL 22
A variety of safety features help protect the engine and
drivetrain from damage. The transmission will upshift from first to
second automatically if the driver doesn't command an upshift in
time. In second, third and fourth, the transmission won't upshift
without a command from the driver; the ECU cuts off fuel flow to
the engine if there is danger of over-revving the engine. The
transmission will upshift to prevent engine damage in the rare
situation where the fuel cutoff alone is unable to prevent further
engine over revving (e.g. on a steep downhill). When downshifting,
the transmission won't execute a driver-commanded downshift that
would send the engine beyond redline in the lower gear. To prevent
lugging away from a stop in a high gear, the Sequential SportShift
transmission will automatically downshift to first gear as it comes
to a stop, even in manual mode. 5-POSITION SHIFT GATE The TL
benefits from a 5-position shift gate that simplifies the operation
of the transmission. It features a quieter linkage and a
speed-controlled reverse lockout solenoid to prevent transmission
damage. When operated in automatic mode, the transmission lets the
driver choose between D (Drive) and L (Low). When moved to the Low
position, the transmission downshifts to the lowest possible ratio
for the current road speed to provide maximum engine braking. If
the vehicle continues to slow, the transmission progressively
downshifts to maintain engine braking. When it has shifted into
first gear, an upshift back to second gear is automatically
available if speed increases, but the transmission will not upshift
further unless the driver moves the selector back to the D (Drive)
position where normal transmission operation resumes. ACTIVE LOCKUP
TORQUE CONVERTER The 5-speed Sequential SportShift automatic
includes an active lockup torque converter that improves fuel
economy while maintaining a high level of drivability. A precise
linear solenoid expands the speed and throttle setting range in
which lockup can be engaged in the top four gears. This reduces
transmission slippage for an improvement in fuel mileage. The
torque converter is calibrated to offer more progressive
acceleration than in the past, coupled with better acceleration at
large throttle openings. The efficient Sequential SportShift
automatic transmission couples with taller overall gearing to
deliver 7.6 L/100km on the highway and 11.6 L/100km in the city.*
*Preliminary fuel economy estimates determined by internal testing.
Use for comparison purposes only. COOPERATION BETWEEN 5-SPEED
SEQUENTIAL SPORTSHIFT AND ELECTRONIC THROTTLE CONTROL With the
Drive-by-wire throttle control system, the function of the engine
and transmission can be closely choreographed for faster, smoother
shifting. Upshifts from first to second gear, and from second to
third gear, are more than 0.3 seconds quicker – a 33 percent or
better improvement when compared to the previous-generation TL Type
S. In manual mode, driver-commanded downshifts are also more than
0.3 second quicker. Meanwhile, the peak g – or "shift shock" – has
been reduced significantly during upshifts and downshifts.
2005 Acura TL : Safety SAFETY OVERVIEW The TL was developed to
perform at the "top of its class" in protecting its occupants with
a comprehensive array of safety technologies, high-grade materials
and advanced construction techniques. While the previous generation
TL was well equipped with passive safety technologies including
front seat belt load limiters and side airbags, the current
generation TL further extends these capabilities with adjustable
rear outboard head restraints and standard side curtain airbags.
These technologies, and the use of high-tensile steel in critical
areas and computer-modeled crush zones, ensure the highest possible
level of passenger protection. The TL has passed the toughest
government safety tests with 5-star ratings in addition to
achieving a "GOOD" rating
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2005 Acura TL 23
in all categories evaluated during the Insurance Institute for
Highway Safety (IIHS) offset collision. The TL safety equation even
extends to pedestrians with structural elements designed to reduce
the likelihood of serious injury in a collision. FEATURES The TL
offers its occupants the latest Acura safety technologies. These
include: Passenger Seating
o Front 3-point Emergency Locking Retractors (ELR) with
pretensioners o Front seat belt load limiters o Neck Injury
Reduction Seats o Front four-way adjustable head restraints o
Occupant Position Detection System (OPDS) o Rear center three-point
seat belt o Rear outboard two-way adjustable head restraints
Child Seating o Automatic Locking Retractors/Emergency Locking
Retractors (ALR/ELR) o Tether anchors (all rear positions) o Lower
Anchors and Tethers for CHildren (LATCH) system for rear outboard
positions
Airbags o Driver and front passenger dual-stage, dual-threshold
front airbags (SRS) o Seamless airbag lid for the passenger airbag
o Driver and front passenger side airbag system (SRS) with front
passenger Occupant
Position Detection System (OPDS) o Side curtain airbag
system
SIDE CURTAIN AIRBAGS The TL side curtain airbags deploy from a
module in the roof in the event of a side impact. They provide an
important and significant level of head protection in the window
area from the A-pillar back to the C-pillar. Research shows that
the g forces affecting an occupant's head in a collision are vastly
lower with a side curtain airbag. The airbag module is located in
the roof and the gas generator is positioned in the C-pillar. It
supplies gas to the airbag through a channel in the roof. Front and
rear "satellite" sensors (one located at the base of the B-pillar
and another located near the rear seat back) detect side impacts
and signal the gas generator. In addition to the side curtain
airbags, a side airbag located in each front outboard seat bolster
provides protection to the thorax in the event of a side impact.
SIDE IMPACT The U.S. government's SINCAP (Side Impact New Car
Assessment Program) test includes a 1,360 kg sled impacting the
side of the stationary vehicle at 62 km/h. The best defense against
this impact is a strong, energy-absorbing body structure built with
high-tensile steel. The TL uses high-strength steel in key areas to
provide the required strength without excessive weight. During a
side impact collision, forces are distributed across the
computer-engineered body structure, lessening forces that affect
the occupants. Dual steel door beams in each front door and a
single door beam in each rear door team with energy-absorbing
padding to further absorb crash energy. The TL is designed to pass
the SINCAP test with a 5-Star/ 5-Star rating, the top rating
attainable. This rating exceeds the performance of the previous
generation TL as well as that of many competitors. The TL has also
tested the new Side Impact Crashworthiness Evaluation (SICE) test
developed by the U.S.-based Insurance Institute for Highway Safety
(IIHS) and has achieved an "ACCEPTABLE" rating.
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2005 Acura TL 24
DUAL-STAGE, DUAL-THRESHOLD FRONT AIRBAGS Dual-stage,
dual-threshold airbags for the driver and front passenger are
designed to provide maximum protection for the head and chest
during a moderate to severe front collision, while simultaneously
helping to reduce injuries and cost. They do both through the use
of a dual-stage, dual-threshold airbag technology. Each airbag
inflator has two stages. During a severe collision both stages fire
simultaneously to provide quick inflation of the airbag. But during
a moderate collision the igniters fire in sequence, slowing the
deployment rate of the airbags. Besides the severity of the
collision, the modules interpret a signal from the seat belt buckle
switch that indicates whether the occupants are wearing their seat
belts.
o If the front passengers are not wearing their seat belts, the
airbags will deploy at the same threshold as conventional
airbags.
o If the front passengers are wearing their seat belts, the
airbags will inflate at a slightly higher threshold.
FRONT IMPACT The TL underwent a barrage of front-impact internal
testing to verify the vehicle structure and occupant-protection
performance. Two of these tests simulate the U.S. government's New
Car Assessment Program (NCAP) test and the Front Offset test
conducted by the IIHS (Insurance Institute for Highway Safety).
These two standardized tests rate front impact performance. In the
NCAP test the vehicle impacts a rigid barrier at 56 km/h. During
the IIHS offset test the vehicle impacts a deformable barrier at 64
km/h with a 40-percent offset. The 2005 TL is expected to achieve a
5-Star rating for driver and passenger in the NCAP test and a GOOD
rating for all points in the IIHS test mode. Both are the highest
rankings achievable. Acura achieved these results with the
implementation of pretensioners and load- limiting seat belts in
conjunction with an energy-absorbing body structure that uses
high-strength steel in critical locations. Using computer
simulations, engineers determined the critical load paths to help
in placement of the high-strength steel. The use of high-strength
steel helps to reduce the overall weight of the vehicle and reduces
the amount of intrusion to the passenger safety cage – the rigid
perimeter that envelopes the occupant during a collision. BUMPER
SYSTEM In addition to evaluating injury projections in collisions,
the Insurance Institute for Highway Safety (IIHS) also evaluates
vehicles for damage resistance in low-speed collisions. IIHS
conducts four tests at 8 km/h (5 mph) – front flat impact, front
30-degree impact, rear flat impact, and rear pole impact. The
combined damage sustained during these four tests is the overall
repair cost. The target repair cost for these tests are less than
the repair cost for the average TL competitors. The bumpers
incorporate high-strength rolled-form bumper beams and highly
efficient thermoplastic energy absorbers to disperse low-speed
collision energy. PEDESTRIAN SAFETY Acura’s interest in safety
extends to pedestrians as well as vehicle occupants. To help reduce
pedestrian injuries in the event of a collision, the new TL hood
and fender areas were designed to deform if contacted by the head
of an adult or child pedestrian. Energy-absorbing collapsible hood
supports, wiper arms and fender mounts allow substantial
deformation in an impact, allowing the engineering team to meet its
target for pedestrian safety. HEADRESTS The driver and passenger
seats use adjustable headrests to reduce the likelihood of neck
injury. ACTIVE SAFETY SYSTEMS Besides its passive safety features,
the TL has a full complement of technologies designed to aid in
driver control and in challenging driving conditions and
circumstances.
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2005 Acura TL 25
These include: o Electronic Brake force Distribution (EBD) o
Brake Assist o Anti-lock Braking System (ABS) o Vehicle Stability
Assist (VSA) o Expansive outside visibility o Bi-function Xenon
High-Intensity Discharge (HID) projector headlamps
Please refer to the Body & Chassis section for information
on these technologies