Acura MDX 2002 Owner's Manual

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.The GCWR must be reduced 2
percent f or every 1,000 f eet (305
meters) of elevation.
The maximum allowable weight of
the vehicle, all occupants, all cargo
and the tongue load is 5690 lbs (2580
kg).
The maximum allowable weights on
the vehicle axles are 2865 lbs (1300
kg) on the f ront axle, and 2920 lbs
(1325 kg) on the rear axle. The maximum allowable weight of
the f ully loaded vehicle and trailer is
9700 lbs (4410 kg) with the proper
hitch and f luid coolers (See page
f or inf ormation about f luid
coolers.) 232
Towing a Trailer
Driving
Gross Vehicle Weight Rating
(GVWR):
Gross Axle Weight Rating
(GA WR): Gross Combined Weight Rating
(GCWR):
227
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Î
Î
ÎNumber of
Occupants 2
3
4
5
6
7 T owing is Not Recommended
Number of
Occupants 2
3
4
5
6
7 T owing is Not Recommended Equipped with transmission cooler and power steering f luid cooler.
Max. T ongue Load
Max. T railer Weight
Max. T ongue Load
Max. T railer Wight Equipped with transmission cooler and power steering f luid cooler.
Towing a Trailer
228
Total Trailer Weight and Tongue Load Limits: BOAT TRAILERS
Total Trailer Weight and Tongue Load Limits: OTHER TYPES OF TRAILERS
The corresponding weight limits assume occupants fill seats from the front of the vehicle to the back, each occupant weights 150 lbs (70 kg) and each has 15 lbs (7
kg) of luggage in the cargo area.
450 lbs (205 kg)
410 lbs (185 kg)
310 lbs (140 kg)
215 lbs (100 kg) 90 lbs (40 kg)
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)
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Thebestwaytoconfirmthatall
loads are within limits is to check
them at a public scale.
To help ensure a saf e drive to a scale,
or if you cannot get to a public scale
to check the weights of your rig, we
recommended that you estimate
your total trailer weight and tongue
load as described below.
To estimate your total trailer weight,
add the weight of the trailer (as
quoted by the trailer manuf acturer)
together with everything in or on the
trailer. Then ref er to the tables on
page to conf irm that you do not
exceed the limit f or your conditions.To estimate tongue load:
Park the vehicle on level ground.
Measure f rom the ground to the
bottom of the trailer hitch. Write
this number down.
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 result f rom Step 4
f rom the result in Step 2 and ref er
to the chart (Fig. 1). If thedifferenceis:
1½ = 150 lbs (68 kg)
2¼ = 250 lbs (114 kg)3 = 350 lbs (159 kg)
3¾ = 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 total trailer weight
and tongue load do not exceed the
limits f or your towing situation (see
page ), caref ully drive your
trailer to a public scale. Be sure your
vehicle and trailer are f ully loaded,
with all occupants and cargo you
plan to take on the road.
1.
2.
3.
4.
5.
228
228
Towing a Trailer
Driving
Estimating Loads
T ot al T railer WeightTongue Load Fig. 1
229
’’
’’
’’
’’
’’ ’’
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Thebestwaytoconfirmthatyour
vehicle and trailer loads are within
limits is to have them checked at a
public scale. The vehicle and trailer
should be f ully loaded, and all
occupants should stay in the vehicle.Check the f ront gross axle weight.
Limit: 2865 lbs (1300 kg)Check the gross vehicle weight.
Limit: 5690 lbs (2580 kg)
If you cannot weigh the rear axle
directly, calculate the rear gross
axle weight. Subtract the weight in
Step 1 f rom the weight in Step 2.
Limit: 2920 lbs (1325 kg)
1. 2.
3.
Towing a Trailer
Driving
Checking L oads
230
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Check the gross combined weight. Check the weight of the hitchedtrailer. Write this number down.Check the weight of the unhitched
trailer. Limit: See page .
Calculate the tongue load.
Subtract the weight in Step 5 f rom
the weight in step 6.
Limit: See page .
Range: 5-10% f or boat trailers
8-15% f or other trailers
Gross combined weight should be
decreased 2% f or every 1000 f eet
(305 meters) of elevation.
4. 5. 6.
7.
Limit:
228
228
Towing a Trailer
Driving231
9700 lbs (4410 kg)
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Discuss any additional needs with
your trailer sales or rental agency,
and make sure all equipment is
properly installed and maintained.
Since local requirements may vary,
check with appropriate state
authorities to be sure that your
equipment will meet all regulations
in the areas where you plan to tow. Towing generally requires a variety
of supplemental equipment. To
ensure the best quality, we
recommend that you purchase Acura
equipment whenever possible. Your
dealer offers a trailer package that
includes a hitch, a ball mount, a
wiring harness, a transmission f luid
cooler and a heavy-duty power
steering f luid cooler.We strongly recommend that you
have your Acura dealer install a
genuine Acura hitch and the
required f luid coolers. Using non-
Acura equipment may result in
serious damage to your vehicle.
A weight distributing hitch is not
recommended f or use with your
MDX as an improperly adjusted
weight distributing hitch may reduce
handling stability and braking
perf ormance.
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
so they can catch the trailer if it
becomes unhitched. Leave enough
slack to allow the trailer to turn
corners easily, but to 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.
Towing a Trailer
Driving
T owing Equipment and
A ccessoriesHitch
Weight Distributing HitchSaf et y Chains Sway Cont rol
T ransmission Fluid Cooler andPower St eering Fluid Cooler
232
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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. Any attempt to
attach trailer brakes to your vehicle’s
hydraulic system will lower braking
ef f ectiveness and create a potential
hazard.
See your Acura dealer f or more
inf ormation about powering the
electric brake activation system. Acura requires that any trailer with a
total trailer weight of 1000 lbs (455
kg) or more have its own brakes.
Towing a Trailer
Driving
Trailer Brakes
233
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If you use a non-Acura trailer
lighting harness and converter, you
cangetthematingconnectorand
pins that mate with the connector in
your vehicle f rom your Acura dealer.
Since lighting and wiring vary in
trailer type and brand, you should
also have a qualif ied mechanic install
a suitable connector between the
vehicleandthetrailer.
All states and Canadian provinces
require some type of trailer lights.
Check requirements f or the areas
where you plan to tow.
To get to your vehicle’s trailer
lighting connector, open the tailgate,
remove the cargo cover, then
remove the rear panel trim. The
connector is on the lef t side. We
recommend that you have your
Acura dealer install an Acura wiring
harness and converter. This harness
has been designed and tested f or
your vehicle.
Driving
Towing a Trailer
T railer L ights
234
G GR
ROOU UNNDD
(
( B
BL LAA C
CKK)) B
BA
A C
CKK--U
UP P L
LIIGGH HT
T
(
( G
GR REEE
EN
N/ /B
BL LAA C
CKK)) L
LE
E F
FTT T
TU
UR RNN S
SIIGGN NAAL
L
(
( G
GR REEE
EN
N/ /B
BL LUUE E)
)
T
T A
A I
ILLL LIIGGH HT
T
(
( R
RE ED
D /
/B
BL LAA C
CKK))
B
BR
RAA K
KEE L
LIIGGH HT
T
(
( W
WH HI
ITT E
E/
/B
BL LAA C
CKK))
R
RI
IGGH HT
T T
TU
UR RNN S
SIIGGN NAAL
L
(
( G
GR REEE
EN
N/ /Y
YE EL
LLLOOW W) )
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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.
When towing a trailer, we
recommend that you carry a f ull-size
spare wheel and tire f or your vehicle.
Using the compact spare that came
with the MDX may adversely affect
vehicle handling.
We also recommend that you carry a
f ull-size spare wheel and tire f or your
trailer. Ask your trailer sales or
rental agency where and how to
store the spare. See page f or proper tire size,
page f or how to store a f ull-sized
wheel and tire, and page for
inf ormation on changing a f lat tire.
Remember to unhitch the trailer
bef ore changing a f lat.When preparing to tow, and bef ore
driving away, be sure to check the
f ollowing:
The vehicle has been properly
serviced, and the brakes,
suspension and cooling system are
in good operating condition. If you
tow f requently, f ollow the Severe
Conditions maintenance schedule.
The trailer has been properly
serviced and is in good condition.
All weights and loads are within
limits (see pages and ).
Thehitch,safetychains,andany
other attachments are secure.
Allitemsonandinthetrailerare
properly secured and cannot shif t
while you drive. The lights and brakes on your
vehicle and the trailer are working
properly.
Your vehicle tires and spare are in
good condition and properly
inf lated (see page ).
The trailer tires and spare are in
good condition and inf lated as
recommended by the trailer
maker.
320 315
291
226 228287
Towing a Trailer
Driving
Trailer Mirrors
Spare TiresPre-T ow Checklist
235
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The added weight, length, and
height of a trailer will af f ect your
vehicle’s handling and perf ormance,
so driving with a trailer requires
some special driving skills and
techniques.
Foryoursafetyandthesafetyof
others,taketimetopracticedriving
maneuvers bef ore heading f or the
open road, and f ollow the guidelines
discussed below.
Avoid towing a trailer during your
vehicle’s f irst 500 miles (800
kilometers) (see page ).Drive slower than normal in all
driving situations. Obey all local
speed limits f or vehicles with trailers.
To keep the transmission f rom
f requently upshif ting and
downshif ting, drive in D . When
driving with a f ix-sided (e.g, camper,
utility) trailer, do not exceed 55 mph
(88 km/h). At higher speeds, the
trailer may sway or affect vehicle
handling.
Make turns more slowly and wider
than normal. The trailer tracks a
smaller arc than your vehicle, and it
canhitorrunoversomethingthe
vehicle misses. Allow more time and
distance f or braking. When you need
to slow down, slowly lif t your f oot of f
the throttle and gradually apply the
brakes. Do not brake or turn
suddenly as this could cause the
trailer to jackknif e or turn over.
194
4
Towing a Trailer
Driving
Driving Saf ely With a T railer
Break-In Period T owing Speed
Making T urns and Braking
236
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