lock Acura MDX 2002 Repair Manual

You will f eel 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.this defeats the
purpose of the ABS. Let the ABS
work f or you by always keeping f irm,
steady pressure on the brake pedal
as you steer away from the hazard.
This is sometimes ref erred to as
Activation varies with the amount of
traction your tires have. On dry
pavement, you will need to press on
thebrakepedalveryhardbeforeyou
activate the ABS. However, you may
feel the ABS activate immediately if
you are trying to stop on snow or ice.
Your vehicle has an Anti-lock Brake
System (ABS) as standard
equipment. ABS helps to prevent the
wheels f rom locking up and skidding
during hard braking, allowing you to
retain steering control.
When the f ront tires skid, you lose
steering control; the vehicle
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
f aster than a person can do it.
The hydraulic system that operates
the brakes has two separate circuits.
Each circuit works diagonally across
the vehicle (the lef t-f ront brake is
connected with the right-rear brake,
etc.). If one circuit should develop a
problem, you will still have braking
at two wheels.
The ABS also balances the f ront-to
rear braking distribution according
to vehicle loading.
‘‘stomp and steer.’’
CONT INUED
You should never pump the
brake pedal;
Anti-lock Brakes
Brake System Design
Driving
The Braking System
221
F Fr roo n
nt
t
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Î
ÎÎ
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on loose or
uneven surf aces, such as gravel or
snow, than a vehicle without anti-
lock. Slow down and allow a greater
distance between vehicles under
those conditions.
Always steer moderately
when you are braking hard. Severe
or sharp steering wheel movement
can still cause your vehicle to veer
into oncoming traffic or off the road. such as trying to take a
corner too f ast or making a sudden
lane change. Always drive at a safe,
prudent speed f or the road and
weather conditions. it only helps with steering
control during braking. You should
always maintain a saf e f ollowing
distance f rom other vehicles.
The ABS is self -checking. If anything
goes wrong, the ABS indicator on
the instrument panel comes on (see
page ). This means the anti-lock
f unction of the braking system has
shut down. The brakes still work like
a conventional system without anti-
lock, providing normal stopping
ability. You should have the dealer
inspect your vehicle as soon as
possible.63
A BS Indicat or
Import ant Saf et y RemindersA vehicle with A BS may require a
longer distance to stop
A BS cannot prevent a loss of
stability. A BS will not prevent a skid that
results f rom changing direction
abruptly, A BS does not reduce the time or
distance it takes to stop the
vehicle,
The Braking System
Driving222
U U. .SS. .i
inn d
di
icca at too r
r s
shh o
ow
wn n
A
A
B
BSS I
INND DI
ICCA A T
TO
OR R
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If the ABS indicator and the brake
system indicator come on together,
and the parking brake is f ully
released, the front-to-rear braking
distribution system may also shut
down.
Test your brakes as instructed on
page . If the brakes f eel normal,
drive slowly and have your vehicle
repaired by your dealer as soon as
possible. Avoid sudden hard braking
which could cause the rear wheels to
lock up and possibly lead to a loss of
control.331
The Braking System
Driving223
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µCheck your tires
f requently f or wear and proper
pressure. Both are important in
preventing ‘‘hydroplaning’’ (loss of
traction on a wet surface). In the
winter, mount snow tires on all f our
wheels f or the best handling.
Watch road conditions caref ully,
they can change f rom moment to
moment. Wet leaves can be as slip-
pery as ice. ‘‘Clear’’ roads can have
patches of ice. Driving conditions
can be very hazardous when the
outside temperature is near f reezing.
The road surf ace can become
covered with areas of water puddles
mixed with areas of ice, so your
traction can change without warning.
Be caref ul when downshif ting. If
traction is low, you can lock up the
drive wheels f or a moment and cause
askid. Be very cautious when passing, or
beingpassedbyothervehicles.The
spray f rom large vehicles reduces
your visibility, and the wind buf f eting
can cause you to lose control.
Traction
Driving in Bad Weather
Driving225
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When climbing hills, closely watch
your temperature gauge. If it nears
the red (Hot) mark, turn the air
conditioning of f , reduce speed and, if
necessary, pull to the side of the
road to let the engine cool.
If the transmission shif ts f requently
while going up a hill, shif t down one
gear.
If you must stop when f acing uphill,
use the f oot brake or parking brake.
Do not try to hold the vehicle in
placebypressingontheaccelerator,
as this can cause the automatic
transmission to overheat.
When driving down hills, reduce
your speed and shif t down to D . Do
not ‘‘ride’’ the brakes, and remember
it will take longer to slow down and
stop when towing a trailer.Crosswinds and air turbulence
caused by passing trucks can disrupt
your steering and cause your trailer
to sway. When being passed by a
truck or other large vehicle, keep a
constant speed and steer straight
ahead. Do not try to make quick
steering or braking corrections.
Always drive slowly and have
someone guide you when backing up.
Grip the of the steering
wheel; then turn the wheel to the lef t
to get the trailer to move to the lef t,
andturnthewheelrighttomovethe
trailer to the right.
Follow all normal precautions when
parking, including putting the
transmission in PARK and f irmly
setting the parking brake when you
have f inished parking.
Donotparkonaninclineunlessitis
unavoidable. If you must park on an
incline, turn the vehicle wheels
toward the curb on a downhill and
awayfromthecurbonanuphill.
After parking, place wheel chocks at
each trailer tire, on the downhill side.
If the vehicle wheels slip when
retrieving a boat f rom the water,
shifttofirstgearandturnonVTM-4
Lock (see page ).
Disengage VTM-4 Lock as soon as
the boat is out of the water to
prevent damage to the VTM-4
system.
217
3
bottom
Towing a Trailer
Driving
Driving on Hills
Handling Crosswinds and
T urbulence
Backing Up Parking
Ret rieving a Boat
237
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Your MDX can be towed behind a
motorhome at legal highway speeds
up to 65 mph (100 km/h). Do not
exceed 65 mph (100 km/h).
Otherwise, severe transmission
damage will occur. To avoid damage
to the 4WD system, it must be towed
with all f our wheels on the ground
(f lat towing).
When purchasing a tow bar, make
sure you select a reputable
manuf acturer and installer. Follow
the manufacturer’s attachment
instructions caref ully.If you tow more than 8 hours in one
day, you should repeat the above
procedure at least every 8 hours.
(when you stop f or f uel, etc.)
Do the f ollowing to prepare your
MDX f or ‘‘f lat towing.’’ Perf orm this
procedure every day immediately
bef ore you begin towing, and f ollow
this procedure exactly; otherwise,
severe automatic transmission
damage will occur. Check the transmission f luid level
(see page ). Maintaining the correct f luid level
is very important.
Start the engine.
Leave the ignition switch in
ACCESSORY (I) so the steering
wheel does not lock. Make sure
the radio and any items plugged
into the accessory power sockets
are turned of f so you do not run
down the battery. Release the parking brake. ShifttoD ,thentoN.Letthe
engine run f or three minutes, then
turn of f the engine. Press on the brake pedal. Shif t the
lever through all the positions (P,
R,N,D,D,D,2,1)
271
Do not overf ill.
5
543
Towing Your Vehicle Behind a Motorhome
Driving
Ext ended T owing
238
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Replace the transmission fluid every
two years or 30,000 miles (48,000
km), whichever comes f irst.
Driving
Towing Your Vehicle Behind a Motorhome
239
The steering system can be damaged if
the steering wheel is locked. Leave the
ignition switch in Accessory (I), and
make sure the steering wheel turns
f reely bef ore you begin towing.
Improper towing preparation will
damage the transmission. Follow the
above procedure exactly. If you cannot
shif t the transmission or start the
engine, your vehicle must be
transported on a f lat-bed or trailer.
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The f ollowing pages contain practical
tips on basic of f -highway operation.
Driving of f -highway can be hard on a
vehicle. Bef ore you leave the
pavement, be sure all scheduled
maintenance and service has been
done, and that you have inspected
your vehicle. Pay special attention to
the condition of the tires, and use a
gauge to check the tire pressures.Of f -highway, the general rule is to
keep your speed low. Of course,
you’ll need enough speed to keep
moving forward. But at higher
speeds, you have less time to assess
conditions and make good decisions.
There’s also a greater chance of
sliding if you brake or turn too
quickly on wet soil, gravel, or ice. In
any situation, never go f aster than
conditions allow.Generally, the best of f -pavement
braking technique is to gently
depress the brake pedal, then
increase pressure as more braking is
needed. Avoid hard braking. Keep in
mind that you will usually need more
time and distance to brake to a stop
on unpaved surf aces.
After you return to the pavement,
caref ully inspect your vehicle to
make sure there is no damage that
could make driving it unsaf e. Check
the tires for damage and for proper
pressure. If you need to brake hard because of
an emergency, apply steady, even
pressure to the brake pedal. Do not
pump the brakes; let the anti-lock
braking system pump them f or you.
If you pump the brakes, the anti-lock
cannot work as ef f iciently, and your
stopping distance may be increased.
Forbettertractiononallsurfaces,
accelerate slowly and gradually build
up speed. If you try to start too fast
on wet soil, mud, snow, or ice, you
might not have enough traction to
get underway. You may even dig
yourself into a hole. Starting with the
shif t lever in second gear (2) will
help get you to a smooth start on
snow and ice.
Driving
Cont rolling Speed
Check Out Your Vehicle
A ccelerat ing and BrakingDriving T ips
Off-Highway Guidelines
242
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Bef ore driving through water, stop
and make sure that:The water is never deep enough to
cover your wheel hubs, axles or
exhaust pipe. You could stall, and
not be able to restart the engine.
The water could also damage
important vehicle components. The water is not f lowing too f ast.
Deep rushing water can sweep you
downstream. Even very shallow
rushingwatercanwashthe
ground f rom under your tires and
cause you to lose traction and
possibly roll over.The banks are sloped so you can
drive out.
The banks and surf ace under the
water provide good traction. The
water may hide hazards such as
rocks, holes, or mud.
If you decide it’s saf e to drive
through water, choose a suitable
speed and engage VTM-4 Lock (see
page ), then proceed without
shif ting or changing speed. Do not
stop the vehicle or shut of f the
engine while trying to cross a stream.
After driving through water, test
your brakes. If the brakes got wet,
drive slowly while gently pumping
the brakes until they operate
normally.
If the water is deeper than the wheel
hubs, some additional service to the
engine, transmission and dif f erential
mayberequired.Thisserviceisnot
covered by your warranties. 217
Driving
Of f -Highway Driving Guidelines
Crossing a Stream
244
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If you get stuck, engage the VTM-4
Lock mode (see page ).
Caref ully try to go in the direction
(f orward or reverse) that you think
will give you the best chance of
getting unstuck.
Donotspinthetiresathighspeeds.
It will not help you get out and may
cause damage to the transmission or
the VTM-4 system.
If you are unable to f ree yourself ,
you will need to be pulled out by
another vehicle. Your MDX is
equipped with f ront and rear tow
hooks designed f or this purpose.Use a nylon strap to attach the MDX
to the recovery vehicle and caref ully
take out the slack in the strap. Once
the strap is tight, the recovery
vehicle should apply f orce.
Remember that the recovery vehicle
needs good traction to avoid
becoming stuck, too.
You should never use a jack to try
getting unstuck. A jack only works
on f irm, level ground. Also, your
vehicle could easily slip of f the jack
and hurt you or someone else.
You may be able to saf ely tow a light
weight trailer (such as a motorcycle
trailer or small tent trailer) of f -road if
you f ollow these guidelines:
Do not exceed a trailer weight of
1,000 pounds (450 kg) (including
cargo) or a tongue weight of 100
pounds (45 kg).(Tongue weight
should be about 10% of the trailer
weight.)
217
CONT INUED
Driving
If You Get Stuck
T owing a T railer
Of f -Highway Driving Guidelines
245
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