Acura MDX 2004 Owner's Manual

Your Acura is equipped with a Tire
Pressure Monitoring System
(TPMS) that turns on every time you
start the engine and monitors the
pressure in your tires while driving.
Each tire has its own pressure
sensor. If the air pressure of a tire
becomes signif icantly low, the
sensor in that tire immediately sends
a signal that causes the low tire
pressure indicator and the
appropriate tire on the Tire Pressure
Monitor to come on.Driving on a signif icantly under-
inf lated tire causes the tire to
overheat and can lead to tire failure.
Under-inf lation also reduces f uel
efficiency and tire tread life, and may
af f ect the vehicle’s handling and
stopping ability.
When the tire pressure monitoring
system warning light is lit, one or
more of your tires is signif icantly
under-inf lated. You should stop and
check your tires as soon as possible,
and inflate them to the proper
pressureasindicatedonthevehicle’s
tire inf ormation placard. Each tire, including the spare should
be checked monthly when cold and
set to the recommended inf lation
pressure as specif ied in the vehicle
placard and owner’s manual (see
page ).
Although your tire pressure is
monitored, you must manually check
thetirepressuresmonthly.
If you think you can saf ely drive a
short distance to a service station,
proceed slowly to the station and
inflate the tire to the recommended
pressure shown on the driver’s
doorjamb.
If the tire is f lat, or if the tire
pressure is too low to continue
driving, replace the tire with the
compact spare tire.
222
Tire Pressure Monitoring System (TPMS)
Driving
Low Tire Pressure
Indicator
177

The appropriate tire indicator and
Low Tire Pressure Indicator will
come on if a tire becomes
signif icantly underinf lated. Follow
the instructions under ‘‘Low Tire
Pressure Indicator’’.The indicator comes on and stays on
when there is a problem with the
Tire Pressure Monitoring System.
If this happens, the system will shut
of f and no longer monitor tire
pressures. Have the system checked
by an Acura dealer as soon as
possible.
If you have a f lat tire, the Low Tire
Pressure and Tire monitor indicators
will come on. Replace the indicated
flat tire with the compact spare tire
(see page ).Each wheel is equipped with a tire
pressure sensor mounted inside the
tire behind the valve stem. You must
use TPMS specif ic wheels. It is
recommended that you always have
your tires serviced by your Acura
dealer or qualif ied technician.
Af ter you replace the f lat tire, the
Low Tire Pressure indicator will stay
on.Thisisnormal;thesystemisnot
monitoring the spare tire pressure.
Manually check the spare tire
pressure to be sure it is correct.
Never use a puncture-repairing agent
in a f lat tire. If used, you will have to
replace the tire pressure sensor.
Havetheflattirerepairedbyan
Acura dealer as soon as possible.
231
Tire Pressure Monitoring System (TPMS)
Driving
Tire Pressure Monitor
Tire Pressure Monitoring
System (T PMS) Indicator
ChangingtheTirewithTPMS
178

Always use the parking brake when
you park your vehicle. Make sure
the parking brake is set f irmly or
your vehicle may roll if it is on an
incline.
Set the parking brake bef ore you put
the transmission in Park. This keeps
the vehicle from moving and putting
pressure on the parking mechanism
in the transmission.Make sure the moonroof and the
windows are closed.
Turn of f the lights.
Place any packages, valuables, etc.
in the cargo area, or take them
with you.
Lock the doors.
Never park over dry leaves, tall
grass, or other f lammable
materials. The hot three way
catalytic converter could cause
these materials to catch on fire.If the vehicle is f acing uphill, turn
the f ront wheels away f rom the
curb.
If the vehicle is f acing downhill,
turn the front wheels toward the
curb.
Make sure the parking brake is
f ully released bef ore driving away.
Driving with the parking brake
partially set can overheat or
damage the rear brakes.
Parking T ips
Parking
Driving179

Resting your f oot on the pedal keeps
the brakes applied lightly, builds up
heat, and reduces their ef f ectiveness.
It also keeps your brake lights on all
the time, conf using drivers behind
you.
Constant application of the brakes
when going down a long hill builds
up heat and reduces their ef f ective-
ness. Use the engine to assist the
brakes by taking your f oot of f the
accelerator and downshif ting to a
lower gear.Check the brakes after driving
through deep water. Apply the
brakes moderately to see if they f eel
normal. If not, apply them gently and
f requently until they do. Be extra
cautious in your driving.
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.
If the brake pads need replacing, you
will hear a distinctive, metallic
screeching sound when you apply
the brake pedal. If you do not have
the brake pads replaced, they will
screech all the time. It is normal f or
the brakes to occasionally squeal or
squeak when you apply them.
Your vehicle is equipped with disc
brakes at all f our wheels. A power
assist helps reduce the ef f ort needed
on the brake pedal. The ABS helps
you retain steering control when
braking very hard.
Braking System DesignBrake Wear Indicators
Braking System
Driving180
Front

The Anti-lock Brake System (ABS)
helps prevent the brakes f rom
locking up and helps you retain
steering control by pumping the
brakes rapidly, much f aster than a
person can do it.
The ABS also balances the f ront-to-
rear braking distribution according
to vehicle loading.
Let the ABS work f or you by always
keeping f irm, steady pressure on the
brake pedal. This is sometimes
ref erred to as ‘‘stomp and steer.’’You will f eel a pulsation in the brake
pedal when the ABS activates, and
may hear some noise. This is normal:
it is the ABS rapidly pumping the
brakes. On dry pavement, you will
need to press on the brake pedal
very hard before the ABS activates.
However, you may f eel the ABS
activate immediately if you are trying
to stop on snow or ice.
If the ABS indicator comes on, the
anti-lock f unction of the braking
system has shut down. The brakes
still work like a conventional system,
but without anti-lock. You should
have the dealer inspect your vehicle
as soon as possible.
You should never pump the brake pedal.
Activating the Anti-lock Brakes
ABS Indicator
Anti-lock Brakes (ABS)
Driving181

If the ABS indicator and the break
system indicator come on together
and the parking break 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 Acura 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.It only helps with the
steering control during braking.
such as trying to take a
corner too f ast or making a sudden
lane change. Always drive at a safe
speed f or the road and weather
conditions. on loose or
uneven surf aces, such as gravel or
snow, than a vehicle without anti-
lock.
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.
244
Important Saf ety Reminders
A BS does not reduce the time or
distance it takes to stop the
vehicle.
A BS will not prevent a skid that
results f rom changing direction
abruptly, A vehicle with A BS may require a
longer distance to stop
A BS cannot prevent a loss of
stability.
Anti-lock Brakes (ABS)
Driving182

The Vehicle Stability Assist system
helps to stabilize the vehicle during
cornering if the vehicle turns more
or less than desired. It also assists
you in maintaining traction while
accelerating on loose or slippery
road surf aces. It does this by
regulating the engine’s output, and
by selectively applying the brakes.
When VSA activates, you may notice
that the engine does not respond to
the accelerator in the same way it
does at other times.
The VSA system cannot enhance the
vehicle’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 a sufficient margin of safety.When VSA activates, you will see the
VSA Activation indicator blink.
If the VSA system indicator comes
on while driving, pull to the side of
theroadwhenitissafe,andturnoff
the engine. Reset the system by
restarting the engine. If the VSA
system indicator stays on, or comes
back on while driving, have the VSA
system inspected by an Acura dealer.
CONT INUED
VSA A ctivation Indicator
VSA System Indicator
Vehicle Stability Assist (VSA) System
Driving183

If the indicator does not come on
when the ignition switch is turned to
ON(II),theremaybeaproblem
with the VSA system. Have an Acura
dealer inspect your vehicle as soon
as possible.
Without VSA, your vehicle will have
normal braking and cornering ability,
but it will not have VSA traction and
stability enhancement.This switch is under the lef t vent.
Press it to turn the Vehicle Stability
Assist system on and of f .VSA is turned on every time you
start the engine, even if you turned it
off the last time you drove the
vehicle.
Driving with varying tire or wheel
sizes may cause the VSA to
malf unction. When replacing tires,
make sure they are of the same size
and type as your original tires (see
page ).
Deactivate the VSA system if you
need to drive with the compact spare
tire installed (see page ).
If you install winter tires, make sure
they are the same size as those that
were originally supplied with your
vehicle. Exercise the same caution
during winter driving as you would if
your vehicle was not equipped with
VSA.
When VSA is off, the VSA Activation
Indicator comes on as a reminder. 224
230
VSA Of f Switch
VSA and Tire Sizes
Vehicle Stability Assist (VSA) System
Driving184

µµ
To saf ely tow a trailer, you should
observe the load limits, use the
proper equipment, and f ollow the
guidelines in this section.
Be sure to read the Of f -Highway
Driving Guidelines section on page
if you plan to tow of f paved
surf aces. To help ensure a saf e drive to a scale,
or if you cannot get to a public scale,
we recommend that you estimate
your total trailer weight and tongue
load as described next.
The maximum
allowable weight of the vehicle, all
occupants, all cargo and the tongue
load is 5,787 lbs (2,630 kg).
Thebestwaytoconfirmthatall
loads are within limits is to check
them at a public scale. The GCWR must be reduced 2
percent f or every 1,000 f eet (305
meters) of elevation. See page f or limits f or your
towing situation.
Add the weight of your trailer (as
quoted by the manuf acturer) with
everything in or on the trailer. Check
the tables on page that you do
not exceed the limit f or your
conditions.
The maximum
allowable weight on the vehicle axles
are 2,882 lbs (1,307 kg) on the f ront
axle, and 2,992 lbs (1,360 kg) on the
rear axle.
192
187187
CONT INUED
Estimating Loads
Gross Vehicle Weight Rating
(GVWR) Load Limits
Gross Axle Weight Ratings
(GA WR)
T ot al T railer Weight To Estimate the Total Trailer Weight
Towing Weight Limits
Driving185
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
beforestartingtodrive.

The weight that the tongue of a f ully
loaded trailer puts on the hitch
shouldbe5to10percentof thetotal
trailer weight f or boat trailers, and 8
to 15 percent of total trailer weight
f or all other trailers. See page f or
limits f or your towing situation.Too much tongue load reduces f ront-
tire traction and steering control.
Too little tongue load can make the
trailer unstable and cause it to sway.
Park the vehicle on level ground.
Measure and record the distance
from the ground to the bottom of
the trailer hitch.
Connect the f ully loaded trailer to
the hitch.
Measure again f rom the ground to
the same spot on the bottom of the
hitch.
Subtract the second measurement
f rom the f irst measurement. Ref er
to Fig. 1. If thedifferenceis:
1 ½’’ = 150 lbs (68 kg)
2 ¼’’ = 250 lbs (114 kg)3’’ = 350 lbs (159 kg)
3 ¾’’ = 450 lbs (204 kg) 4’’ = over 450 lbs (204 kg)
If thedifferenceismorethan4’’
you have too much tongue load
at the rear. Move or remove
cargo f rom the trailer and the
vehicle, and measure again.
If the estimated trailer weight and
tongue load do not exceed the limits,
drive your trailer to a public scale
f ully loaded with all occupants and
cargo you plan to take on the road.
1.
2.
3.
4.
5.
187
Tongue Load To Estimate the Tongue Load
Fig.1
Towing Weight Limits
Driving186