traction control Acura ZDX 2012 Owner's Manual

14
Quick Reference Guide
VSA® OFF Button (P 244)
● The vehicle stabil ity assist (VSA®) system
helps stabilize the vehicle during
cornering, and helps maintain traction
while accelerating on loose or slippery
road surfaces.
● VSA ® comes on automati cally every time
you start the engine.
● To turn VSA ® on or off, press and hold
the button until you hear a beep.
Cruise Control (P 232)
● Cruise control allows you to maintain a
set speed without keeping your foot on
the accelerator pedal.
● To use cruise control, press the CRUISE
button, then press the DECEL/SET button
once you have received the desired speed
(above 25 mph or 40 km/h).
Tire Pressure Monitoring
System (TPMS)
(P 248)
● TPMS monitors tire pressure.
● TPMS is turned on automatically every
time you start the engine.
Refueling (P 263)
aUnlock the driver’s door.
bPress on the edge of the
fuel fill door to make it
pop up slightly.
cTurn the fuel fill cap
slowly to remove the
cap.
dPlace the cap in the
holder on the fuel fill
door.
eAfter refueling, screw
the cap back on until it
clicks at least once.
Fuel recommendation: Premium unleaded gasoline with a pump octane number
91 or higher required
Fuel tank capacity: 21.00 US gal (79.5 L)

215Continued
Driving
Towing a Trailer
Towing Preparation
Your vehicle can tow a trailer if you carefully observe the load limits, use the proper
equipment, and follow the towing guidelin es. Check the load limits before driving.
■Total trailer weight
Maximum allowable weight of the trailer,
cargo, and everything in or on it must not
exceed 1,500 lbs (680 kg). Towing loads in
excess of this can seriously affect vehicle
handling and performance and can damage
the engine and drivetrain.
■Tongue load
The weight of the tongue with a fully loaded
trailer on the hitch should be approximately
10% of the total trailer weight.
• Excessive tongue load reduces front tire
traction and steering control. Too little
tongue load can make the trailer unstable
and cause it to sway.
• To achieve a proper tongue load, start by
loading 60% of the lo ad toward the front
of the trailer and 40 % toward the rear.
Readjust the load as needed.
■Towing Load Limits1 Towing Load Limits
Check if all loads are within limits at a public scale.
If a public scale is not available, add the estimated
weight of your cargo load to the weight of your
trailer (as quoted by the manufacturer), and the
tongue load.
Break-in Period
Avoid towing a trailer during your vehicle’s first 600
miles (1,000 km).
Never exceed the gr oss weight ratings.
Gross weight information 2 Vehicle Specifications P. 350
3WARNING
Exceeding any load limit or improperly
loading your vehicle and trailer can cause a
crash in which you can be seriously hurt or
killed.
Check the loading of your vehicle and
trailer carefully before starting to drive.
Total Load
Tongue Load

221
uuOff-Highway Driving Guidelines uAvoiding Trouble
Continued
Driving
Avoiding Trouble
• Check Out Your Vehicle before you leave the paveme nt and make sure that all
scheduled maintenance has been comple ted. Pay special attention to the
condition of the tires, an d check the tire pressures.
• Remember the route you choose presents limits (too steep or bumpy), you have
limits (driving skill and comfort), and your vehicle has limits (traction, stability, and
power). Failing to recognize these limits will likely put you and your passengers in
a hazardous situation.
• Accelerating and Braking should be done slowly and gradually. Trying to start
or stop too fast can cause a loss of traction and you could lose control.
• Avoiding Obstacles and Debris in the road reduces the likelihood of a rollover
or damage to your suspension or other components.
• Driving on Slopes increases your risk of a rollov er, particularly if you attempt to
drive across a slope that is too steep. Going straight or down a slope is usually the
safest. If you can’t clearly see all conditions or obstacles on a slope, walk it before
you drive it. If there is any doubt whethe r you can safely pass, don’t try it. Find
another route. If you get stuck when climbing, do not try to turn around. Back
down slowly following the same route you took up the hill.

243
uuWhen Driving uVSA ® (Vehicle Stability Assist), aka ESC (Electronic Stability Control), System
Continued
Driving
VSA ® (Vehicle Stability Assist), aka ESC (Electronic
Stability Control), System
VSA ® helps to stabilize the vehicle during corn ering if the vehicle turns more or less
than what was intended. It also assists in maintaining traction on slippery surfaces.
It does so by regulating engine ou tput and selectively applying the brakes.
When VSA ® activates, you may notice that the
engine does not respon d to the accelerator.
You may also notice some noise from the
hydraulic system. You will also see the
indicator blink.
■VSA ® Operation
1 VSA ® (Vehicle Stability Assist), aka ESC (Electronic Stability
Control), System
The VSA ® may not function properly if tire type and
size are mixed. Make sure to use the same size and
type of tire, and the air pressures as specified.
When the VSA ® indicator comes on and stays on
while driving, there may be a problem with the
system. While this may no t interfere with normal
driving, have your vehi cle checked by a dealer
immediately.
VSA ® cannot enhance stability in all driving situations
and does not control the entire braking system. You
still need to drive and corner at speeds appropriate
for the conditions and always leave a sufficient
margin of safety.
The main function of the VSA ® system is generally
known as Electronic Stability Control (ESC). The
system also includes a traction control function.
VSA ® System
Indicator

uuWhen Driving uVSA ® (Vehicle Stability Assist), aka ESC (Electronic Stability Control), System
244
Driving
This button is on the driver side control panel.
To turn the VSA® system on and off, press and
hold it until you hear a beep.
VSA ® will stop and the indicator will come on.
To turn it on agai n, press the (VSA ® OFF)
button until you hear a beep.
VSA ® is turned on every time you start the
engine, even if you turned it off the last time
you drove the vehicle.
■VSA ® On and Off1 VSA ® (Vehicle Stability Assist), aka ESC (Electronic Stability
Control), System
Without VSA ®, your vehicle will have normal braking
and cornering ability, but it will not have VSA ®
traction and stability enhancement.
In certain unusual condition s when your vehicle gets
stuck in shallow mud or fresh snow, it may be easier
to free it with the VSA ® temporarily switched off.
When the VSA ® system is off, the traction control
system is also off. You sh ould only attempt to free
your vehicle with the VSA ® off if you are not able to
free it when the VSA ® is on.
Immediately after freeing yo ur vehicle, be sure to
switch VSA ® on again. We do not recommend driving
your vehicle with the VSA ® and traction control
systems switched off.
If the low tire pressure/T PMS indicator comes on or
blinks, the VSA ® system comes on automatically. In
this case, you cannot turn the system off by pressing
the button.
You may hear a motor sound coming from the
engine compartmen t while system checks are being
performed immediately after starting the engine or
while driving. This is normal.
VSA ® OFF Indicator

303
uuChecking and Maintaining Tires uDOT Tire Quality Grading (U.S. Vehicles)
Continued
Maintenance
DOT Tire Quality Grading (U.S. Vehicles)
The tires on your vehicle meet all U.S. Federal Safety
Requirements. All tires are also graded for treadwear, traction,
and temperature performance according to Department of
Transportation (DOT) standards. The following explains these
gradings.
Quality grades can be found where applicable on the tire sidewall
between tread shoulder and maximum section width.
The treadwear grade is a comparative rating based on the wear
rate of the tire when tested under controlled conditions 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 conditions of their use, however,
and may depart significantly from the norm due to variations in
driving habits, service practi ces and differences in road
characteristics and climate.
■Uniform Tire Quality Grading
■Treadwear
1 Uniform Tire Quality Grading
For example:
Treadwear 200
Traction AA
Temperature A
All passenger car tires must conform
to Federal Safety Requirements in
addition to these grades.

uuChecking and Maintaining Tires uDOT Tire Quality Grading (U.S. Vehicles)
304
Maintenance
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 asphal t and concrete. A tire marked
C may have poor traction performance.
The temperature grades are A (the highest), B, and C,
representing the tire’s resistance to the generation of heat and its
ability to dissipate heat when te sted under controlled conditions
on a specified indoor laboratory test wheel. Sustained high
temperature can cause the material of the tire to degenerate and
reduce tire life, and excessive temp erature can lead to sudden tire
failure. The grade C corresponds to a level of performance which
all passenger car tires must meet under the Federal Motor Vehicle
Safety Standard No. 109. Grades B and A represent higher levels
of performance on the laboratory test wheel than the minimum
required by law.
■Traction
■Temperature
1 Traction
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.
1Temperature
Warning: The temperature grade for
this tire is establishe d for a tire that is
properly inflated and not
overloaded. Excessive speed,
underinflation, or excessive loading,
either separately or in combination,
can cause heat buildup and possible
tire failure.