traction control Acura RL 2001 3.5 Owner's Manual

Indicator Lights

Vehicle Stability Assist
(VSA) System Indicator
This indicator normally comes on for a few seconds when you turn the
ignition switch ON (II).
If this light comes on and stays on at
any other time, or it does not come
on when you turn the ignition switch
ON (II), there is a problem with the
VSA system. Take the car to your dealer to have it checked. Without
VSA, your car still has normal driving ability, but will not have VSA
traction and stability enhancement. See page 191 for more informationon the VSA system. VSA Activation Indicator
This indicator has three functions:
1. It comes on as a reminder that you have turned off the VehicleStability Assist (VSA) system.
2. It flashes when VSA is active (see
page 191).
3. It comes on along with the VSA
system indicator if there is a
problem with the VSA system.
This indicator normally comes on for a few seconds when you turn the
ignition switch ON (II). See page 191 for more information on the

VSA system.
U.S.


Canada

Anti-lock BrakeSystem (ABS)
Indicator

This light normally comes on for a few seconds when you turn theignition switch ON (II), and when
the ignition switch is turned to START (III). If this light comes on at
any other time, there is a problem in
the ABS. If this happens, take the car to your dealer to have it checked.
With the light on, your car still has normal braking ability but no anti-
lock. For complete information, see
page 189.

Instruments and Controls

VSA

A
B S

The Braking System

Brake System Design
The hydraulic system that operates the brakes has two separate circuits.Each circuit works diagonally across
the car (the left-front brake is connected with the right-rear brake,
etc.). If one circuit should develop a
problem, you will still have braking
at two wheels.

Front
Anti-lock Brakes

Your car has an Anti-lock BrakeSystem (ABS) as standard
equipment. ABS helps to prevent the
wheels from locking up and skidding during hard braking, allowing you to
retain steering control.
When the front tires skid, you lose steering control; the car continues
straight ahead even though you turn
the steering wheel. The ABS helps to
prevent lock-up and helps you retain steering control by pumping the
brakes rapidly; much faster than a person can do it.
The ABS also balances the front-to rear braking distribution according
to vehicle loading. You should never pump the
brake pedal, this defeats the
purpose of the ABS. Let the ABS
work for you by always keeping firm, steady pressure on the brake pedal
as you steer away from the hazard.
This is sometimes referred to as
"stomp and steer."

You will feel a pulsation in the brake pedal when the ABS activates, and
you may hear some noise. This is normal, it is the ABS rapidly
pumping the brakes.
Activation varies with the amount of traction your tires have. On dry
pavement, you will need to press on
the brake pedal very hard before you activate the ABS. However, you may
feel the ABS activate immediately if
you are trying to stop on snow or ice.

Driving

Vehicle Stability Assist (VSA) System
The Vehicle Stability Assist system helps to stabilize the vehicle during
cornering if the car turns more or
less than desired. It also assists you in maintaining traction while
accelerating on loose or slippery
road surfaces. It does this by
regulating the engine's output, and
by selectively applying braking.
When VSA activates, you may notice that the engine does not respond to
the accelerator in the same way it does at other times. You will also see
the VSA Activation Indicator blink. The VSA system cannot enhance the
car's driving stability in all situations
and does not control your vehicle's
entire braking system. It is still your
responsibility to drive and corner at
reasonable speeds and to leave asufficient margin of safety. VSA Activation Indicator
When VSA activates, you will see the
VSA Activation indicator blink.
Driving
CONTINUED

VSA ACTIVATION INDICATOR

Driving in Bad Weather

Rain, fog, and snow conditions require a different driving technique
because of reduced traction and
visibility. Keep your car well- maintained and exercise greatercaution when you need to drive in
bad weather. The cruise control should not be used in these
conditions. Driving Technique — Always drive
slower than you would in dry
weather. It takes your car longer to
react, even in conditions that may seem just barely damp. Apply
smooth, even pressure to all the
controls. Abrupt steering wheel
movements or sudden, hard appli-
cation of the brakes can cause loss of
control in wet weather. Be extra
cautious for the first few miles (kilometers) of driving while you
adjust to the change in driving
conditions. This is especially true in snow. A person can forget some
snow-driving techniques during the
summer months. Practice is needed
to relearn those skills. Exercise extra caution when driving
in rain after a long dry spell. After
months of dry weather, the first
rains bring oil to the surface of the
roadway, making it slippery.
Driving

Driving in Bad Weather

Visibility — Being able to see clearly in all directions and being
visible to other drivers are important in all weather conditions. This is
more difficult in bad weather. To be seen more clearly during daylight
hours, turn on your headlights.
Inspect your windshield wipers and
washers frequently. Keep the wind- shield washer reservoir full of the
proper fluid. Have the windshield
wiper blades replaced if they start to streak the windshield or leave parts
unwiped. Use the defroster and air conditioning to keep the windows
from fogging up on the inside (see
pages 128 and 133). Traction — Check your tires
frequently for wear and properpressure. Both are important in
preventing "hydroplaning" (loss of
traction on a wet surface). In the
winter, mount snow tires on all four
wheels for the best handling.
Watch road conditions carefully, they can change from moment tomoment. Wet leaves can be as slip-
pery as ice. "Clear" roads can have
patches of ice. Driving conditionscan be very hazardous when the
outside temperature is near freezing.
The road surface can become covered with areas of water puddles
mixed with areas of ice, so your
traction can change without warning.
Be careful when downshifting. If
traction is low, you can lock up the drive wheels for a moment and cause
a skid. Be very cautious when passing, or
being passed by other vehicles. The spray from large vehicles reduces
your visibility, and the wind buffeting can cause you to lose control.
Driving

Towing a Trailer

Your Acura has been designedprimarily to carry passengers and
their cargo. You can use it to tow a
trailer if you carefully observe the
load limits, use the proper equipment, and follow the guidelines in this
section.
Load Limits
Total Trailer Weight: The totalweight of the trailer andeverything loaded in it must not
exceed 2,000 Ibs (900 kg). Towing
a load that is too heavy canseriously affect your car's
handling and performance. It can also damage the engine and
drivetrain. Tongue Load: The weight that
the tongue of a fully-loaded trailer
puts on the hitch should beapproximately 10 percent of the
trailer weight. Too little tongue
load can make the trailer unstable and cause it to sway. Too much
tongue load reduces front-tire
traction and steering control.

Driving

Technical Information

The diagrams in this section give

you the dimensions and capacities of

your Acura, and the locations of the
identification numbers. It also

includes information you should

know about your vehicle's tires and
emissions control systems.
Identification Numbers................. 300
Specifications................................. 302

DOT Tire Quality Grading
(U.S. Cars).............................. 304

Treadwear.................................. 304

Traction.......................................304

Temperature.............................. 305
Oxygenated Fuels.......................... 306

Driving in Foreign Countries....... 307
Emissions Controls........................ 308
The Clean Air Act...................... 308Crankcase Emissions Control
System.....................................308

Evaporative Emissions Control
System..................................... 308

Onboard Refueling Vapor Recovery................................. 308
Exhaust Emissions Controls.... 309 PGM-FI System..................... 309
Ignition Timing Control
System.................................309

Exhaust Gas Recirculation (EGR) System.................... 309
Three Way Catalytic
Converter............................309

Replacement Parts..................... 309
Three Way Catalytic Converter... 310 State Emissions Testing............... 311

Technical Information

DOT Tire Quality Grading (U.S. Cars)

The tires on your car meet all U.S. Federal Safety Requirements. All
tires are also graded for treadwear,
traction, and temperature perform- ance according to Department of
Transportation (DOT) standards.
The following explains these gradings.

Uniform Tire Quality Grading
Quality grades can be found where
applicable on the tire sidewall
between the tread shoulder and the
maximum section width. For
example:

Treadwear 200
Traction AA
Temperature A
DOT Quality Grades

All passenger car tires must conform to Federal Safety Requirements inaddition to these grades.
Treadwear

The treadwear grade is a compara- tive rating based on the wear rate of
the tire when tested under controlledconditions on a specified government
test course. For example, a tire
graded 150 would wear one and one-
half (1 1/2) times as well on the government course as a tire graded 100. The relative performance of
tires depends upon the actual condi- tions of their use, however, and maydepart significantly from the norm
due to variations in driving habits,
service practices and differences in
road characteristics and climate.
Traction — AA, A, B, C

The traction grades, from highest to
lowest, are AA, A, B, and C. Those
grades represent the tire's ability to stop on wet pavement as measured
under controlled conditions on specified government test surfaces
of asphalt and concrete. A tire
marked C may have poor traction
performance.
Warning: The traction grade assigned to this tire is based on
straight-ahead braking traction tests,
and does not include acceleration,
cornering, hydroplaning, or peak
traction characteristics.

Technical Information