2004 Acura MDX Owner's Manual

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

Î
Î
ÎNumber of
Occupants 2
3
4
5
6
7 Equipped with transmission cooler and power steering f luid cooler.
Max. T railer Weight Max. T ongue Load
T owing is Not Recommended
Number of
Occupants 2
3
4
5
6
7 Equipped with transmission cooler and power steering f luid cooler.
Max. T railer Weight Max. T ongue Load
T owing is Not Recommended
Towing Weight Limits
Driving187
4500 lbs (2045 kg)
4500 lbs (2045 kg)
4500 lbs (2045 kg)
4000 lbs (1820 kg) 1700 lbs (770 kg) 450 lbs (205 kg)
410 lbs (185 kg)
310 lbs (140 kg)
215 lbs (100 kg)
90 lbs (40 kg)
3500 lbs (1590 kg)
3500 lbs (1590 kg)
3000 lbs (1365 kg) 2000 lbs (910 kg)
1000 lbs (455 kg) 450 lbs (205 kg)
410 lbs (185 kg)
310 lbs (140 kg)
215 lbs (100 kg)
90 lbs (40 kg)
The corresponding weight limits assume occupants fill seats from the front of the vehicle to the back, each occupant weighs 150 lbs (70 kg) and each has 1 5lbs(7
kg) of luggage in the cargo area.
Total Trailer Weight and Tongue Load Limits: BOAT TRAILERS
Total Trailer Weight and Tongue Load Limits: OTHER TYPES OF TRAILERS

Towing generally requires a variety
of supplemental equipment. To
ensure the best quality, we
recommend that you purchase Acura
equipment whenever possible.
Discuss any additional needs with
your trailer sales or rental agency,
and make sure all equipment is
properly installed, maintained, and
also meets state regulations.
A weight distributing hitch is not
recommended f or use with your
MDX.Always use saf ety chains when you
tow a trailer. Make sure the chains
are secured to the trailer and hitch,
and that they cross under the tongue
and can catch the trailer if it
becomes unhitched. Leave enough
slack to allow the trailer to turn
corners easily, but do not let the
chains drag on the ground.
This device is recommended if your
trailer tends to sway. Your trailer
maker can tell you what kind of sway
control you need and how to install it.
To help prevent overheating, a
heavy-duty transmission f luid cooler
and a heavy-duty power steering
f luid cooler are required f or trailer
towing. These coolers are available
only f rom your Acura dealer.
Acura requires that any trailer with a
total trailer weight of 1,000 lbs (455
kg) or more have its own brakes.
There are two common types of
trailer brakes: surge and electric.
Surge brakes are common f or boat
trailers, since the brakes will get wet.
Electric brakes must be
electronically actuated. Do not
attempt to tap into your vehicle’s
hydraulic system. See your brake
manuf acturer f or more inf ormation
on installing electric brakes.
Many states and provinces require
special exterior mirrors when towing
a trailer. Even if they don’t, you
should install special mirrors if you
cannot clearly see behind you, or if
the trailer creates a blind spot.
We strongly recommend that you
have your Acura dealer install an
Acura hitch and use the required
f luid coolers. Using non-Acura
equipment may result in serious
damage to your vehicle. T owing Equipment and
A ccessories
Hitch
Weight Distributing Hitch Saf et y Chains
Sway Cont rolT ransmission Fluid Cooler andPower St eering Fluid Cooler Trailer Brakes
Trailer Mirrors
Towing a Trailer
Driving188