towing Acura MDX 2003 Owner's Manua

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. Acura requires that any trailer with a
total trailer weight of 1000 lbs (455
kg) or more have its own brakes.
See your brake manuf acturer f or
more inf ormation on installing
electric brakes.
Trailer Brakes
Towing a Trailer
Driving278

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.
CONT INUED
T railer L ights
Towing a Trailer
Driving279
GROUND
(BLACK)
RIGHT TURN SIGNAL
(GREEN/YELLOW)
BACK-UP LIGHT
(GREEN/BLACK)
BRAKE LIGHT
(WHITE/BLACK) LEFT TURN SIGNAL
(GREEN/BLUE)
TAILLIGHT
(RED/BLACK)

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 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.
Allitemsonandinthetrailerare
properly secured and cannot shif t
while you drive. Thehitch,safetychains,andany
other attachments are secure. All weights and loads are within
limits (see pages and ). The trailer has been properly
serviced and is in good condition.
337
366 361 271 273 333
Trailer Mirrors
Spare TiresPre-T ow Checklist
Towing a Trailer
Driving280

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.
236
4
Driving Saf ely With a T railer
Break-In Period T owing Speed
Making T urns and Braking
Towing a Trailer
Driving281

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.
259
3
bottom
Driving on Hills
Handling Crosswinds and
T urbulence
Backing Up Parking
Ret rieving a Boat
Towing a Trailer
Driving282

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)
317
Do not overf ill.
5
543
CONT INUED
Ext ended T owing
Towing Your Vehicle Behind a Motorhome
Driving283

Replace the transmission fluid every
two years or 30,000 miles (48,000
km), whichever comes f irst.
Towing Your Vehicle Behind a Motorhome
Driving284
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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Driving less than 5 miles (8 km)
per trip or, in f reezing
temperatures, driving less than
10 miles (16 km) per trip.
Driving in extremely hot [over
90°F (32°C)] conditions.
Extensive idling or long periods
of stop-and-go driving.
Trailer towing, driving with a
roof top carrier, or driving in
mountainous conditions.
Driving on muddy, dusty, or de-
iced roads.
Follow the Severe Conditions
Maintenance Schedule if you drive
your vehicle
MAINLYunder one or
more of the f ollowing conditions:
Follow the Maintenance
Schedule f or Severe Conditions.
Maint enance
U.S. Owners
Canadian Owners
300
Visually inspect the following items:
Follow this schedule for rear differential
fluid replacement if you use your vehicle
for off-highway driving, trailer towing,
or mainly in stop-and go driving.
Otherwise, use the fluid replacement
schedule in the Maintenance Schedule
for Normal Conditions.
miles x 1,000
km x 1,000
months
Service at the indicated distance or
time whichever comes first.
Replace every 3,750 miles (6,000 km) or 6 monthsCheck oil and coolant at each fuel stop
Every 3 years (independent of mileage)
Rotate tires every 7,500 miles (12,000 km)
Every 7,500 miles (12,000 km) or 6 months
Tie rod ends, steering gear box, and boots
Suspension components
Driveshaft boots
Brake hoses and lines (including ABS)
All fluid levels and conditions of fluids
Exhaust system
Fuel lines and connections
Lights and controls
Vehicle underbody 120,000 miles (192,000 km) or 10 years, then every
60,000 miles (96,000 km) or 5 years
15
24
12
30
48
2445
72
3660
96
4875
120 60 90
144 72 105
168
84 120
192
96
Every 7,500 miles (12,000 km) or 6 months
Replace engine oil and oil filter
Check engine oil and coolant
Replace air cleaner element
Use normal schedule except in dusty
conditions
Inspect valve clearance
Replace spark plugs
Replace timing belt and inspect water pump
Inspect and adjust drive belts
Replace engine coolant
Replace transmission fluid
Replace VTM-4 rear differential fluid
Replace transfer assembly fluid
Inspect front and rear brakes
Replace brake fluid
Check parking brake adjustment
Replace dust and pollen filter
Lubricate all hinges, locks and latches
Rotate tires (Check tire inflation and condition at least
once per month) Adjust only if noisy
Refer to page332for replacement
information under special driving
conditions.
Refer to page 331for replacement
information under special driving
conditions.
See page 297.
1:
2:
3:
:
,1
3
2
Maintenance Schedule for Severe Conditions

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Maint enance302
See information on maintenance and emissions warranty, last
column, page .
See timing belt on page to determine need for replacement.
See dust and pollen filter on page for replacement
information under special driving conditions.
Follow this schedule for rear differential fluid replacement if you
use your vehicle for off-highway driving, trailer towing, or
mainly in stop-and go driving. Otherwise, use the fluid
replacement schedule in the Maintenance Schedule for Normal
Conditions.
Check engine oil and coolant at each fuel stop.
Check and adjust valve clearance, cold engine, only if noisy.
NOTE: 297
332 331
:
1:
2:
3:75,000 mi/120,000 km/5 yrs
78,750 mi/126,000 km
82,500 mi/132,000 km
86,250 mi/138,000 km
6yrs
90,000 mi/144,000 km/6 yrs
93,750 mi/150,000 km
97,500 mi/156,000 km
101,250 mi/162,000 km
105,000 mi/168,000 km/7 yrs
108,750 mi/174,000 km
112,500 mi/180,000 km
116,250 mi/186,000 km
120,000 mi/192,000 km/8 yrs
9yrs
120,000 mi/ 192,000 km/10 yrs
then every 60,000 mi/
96,000 km/5 yrs DoitemsinA,B,C.
Do items in A.
Do items in A, B.
Do items in A.
Replace brake fluid (independent of mileage).
DoitemsinA,B,C,D.
Do items in A.
Do items in A, B.
Do items in A. Replace timing belt , and inspect water
pump. Inspect valve clearance. Replace spark plugs.
DoitemsinA,B,C.
Do items in A.
Do items in A, B.
Do items in A.
DoitemsinA,B,C,D. Replace brake fluid (independent of mileage).
Replace engine coolant. 

1,
Maintenance Schedule for Severe Conditions (listed by distance/time)

This section covers the more-
common problems that motorists
experience with their vehicles. It
gives you inf ormation about how to
safely evaluate the problem and what
to do to correct it. If the problem has
stranded you on the side of the road,
you may be able to get going again.
If not, you will also f ind instructions
on getting your vehicle towed.......................
Compact Spare Tire .360
....................
Changing a Flat Tire .361
..........
If Your Engine Won’t Start . 368
Nothing Happens or the Starter Motor Operates ........................
Very Slowly .368
The Starter Operates ................................
Normally .368
................................
Jump Starting .369
............
If Your Engine Overheats . 371
.........
Low Oil Pressure Indicator . 373
..........
Charging System Indicator . 374
.......
Malf unction Indicator Lamp . 375
...............
Brake System Indicator . 377
..................
Closing the Moonroof . 378
..............................................
Fuses .379
..........
Checking and Replacing . 380
......................
Emergency Towing .385
Taking Care of the Unexpected
T aking Care of t he Unexpect ed359