2004 Acura MDX engine

This section gives you tips on
starting the engine under various
conditions, and how to operate the
automatic transmission. It also
includes important inf ormation on
parking your vehicle, the braking
system, the VTM-4 System, the VSA
system, Tire Pressure Monitoring
System, and f acts you need if you are
planning to tow a trailer.........................
Driving Guidelines .170
........................
Preparing to Drive .170
.......................
Starting the Engine .171
..............
Automatic Transmission . 172
Variable Torque Management ..............................
4WD System .176
..............................
VTM-4 Lock .176
Tire Pressure Monitoring System ......................................
(TPMS) .177
...........................................
Parking .179
.............................
Braking System .180
...........................
Anti-lock Brakes .181
Vehicle Stability Assist (VSA) ........................................
System .183
.................
Towing Weight Limits . 185
...........................
Towing a Trailer .188
Towing Your Vehicle Behind a ................................
Motorhome .190
..............
Of f -Highway Guidelines . 192
Driving
Driving169

Your vehicle has higher ground
clearance that allows you to travel
over bumps, obstacles, and rough
terrain. It also provides good
visibility so you can anticipate
problems earlier.
Because your vehicle rides higher
of f the ground, it has a high center
of gravity that can cause it to roll
over if you make abrupt turns. Utility
vehicles have a signif icantly higher
roll over rate than other types of
vehicles.
To prevent rollovers or loss of
control:Take corners at slower speeds
than you would with a passenger
vehicle.
Avoid sharp turns and abrupt
maneuvers whenever possible. Do not modif y your vehicle in any
way that would raise the center of
gravity.
Do not carry heavy cargo on the
roof .
Youshoulddothefollowingchecks
and adjustments bef ore you drive
your vehicle. Make sure all windows, mirrors,
and outside lights are clean and
unobstructed. Remove f rost, snow,
or ice. Make sure the doors and tailgate
are securely closed and locked. Check the steering wheel
adjustment (see page ). Check the adjustment of the
inside and outside mirrors (see
page ). Check the seat adjustment (see
page ). Check that any items you may be
carrying are stored properly or
f astened down securely.
When you start the engine, check
the gauges and indicators in the
instrument panel (see page ).
Visually check the tires. If a tire
looks low, use a gauge to check its
pressure. Fasten your seat belt. Check that
your passengers have f astened
their seat belts (see page ).
1.
2. 3.
4.
5.
6.
7.
8.
9.
84
92 76
1457
See page f or additional guidelinesf or driving of f -highway. 192
Driving Guidelines, Preparing to Drive
Driving
Driving Guidelines
Preparing to Drive
170

Apply the parking brake.
In cold weather, turn of f all
electrical accessories to reduce
the drain on the battery.
Make sure the shif t lever is in
Park. Press on the brake pedal.
If the engine does not start within
15 seconds, or starts but stalls
right away, repeat step 4 with the
accelerator pedal pressed halfway
down. If the engine starts, release
pressure on the accelerator pedal
so the engine does not race.If the engine fails to start, press
the accelerator pedal all the way
downandholdittherewhile
starting to clear flooding. If the
engine still does not start, return
to step 5.
Without touching the accelerator
pedal, turn the ignition key to the
START (III) position. Do not hold
the key in START (III) f or more
than 15 seconds at a time. If the
engine does not start right away,
pause f or at least 10 seconds
bef ore trying again.
5. 6.
1.
2.
3.
4.
Starting the Engine
Driving171
NOTICE: The engine is harder to start
in cold weather. Also, the thinner air
f ound at altitudes above 8,000 f eet
(2,400 meters) adds to this problem.

µµµµµ
µ
CONT INUED
This position mechani-
cally locks the transmission. Use
Park whenever you are turning of f or
starting the engine. To shif t out of
Park, you must press on the brake
pedal and have your f oot of f the
accelerator pedal.
If you have done all of the above and
still cannot move the lever out of
Park, see on
page .
To avoid transmission damage, come
to a complete stop bef ore shif ting
into Park. The shif t lever must be in
Park bef ore you can remove the key
from the ignition switch. Press the brake
pedal to shift from Park to Reverse.
To shif t f rom Reverse to Neutral,
come to a complete stop and then
shif t.
Your vehicle has a reverse lockout so
you cannot accidentally shif t to
Reverse from Neutral or any other
driving position when the vehicle
speed exceeds 7 9 mph (12 14
km/h).
If you cannot shif t to Reverse when
the vehicle is stopped, press the
brake pedal and slowly shift to
Neutral, and then to Reverse.
If there is a problem in the reverse
lockout system, or your vehicle’s
battery is disconnected or goes dead,
you cannot shif t to Reverse. (Ref er
to Shif t Lock Release on page ). Use Neutral if you
need to restart a stalled engine, or if
it is necessary to stop brief ly with
the engine idling. Shif t to the Park
position if you need to leave your
vehicle for any reason. Press on the
brake pedal when you are moving
the shift lever from Neutral to
another gear.
Use this position f or
normal driving. The transmission
automatically selects a suitable gear
f or your speed and acceleration. You
may notice the transmission shif ting
up at higher speeds when the engine
is cold. This helps the engine warm
up f aster.
175
175
Automatic Transmission
Driving
Park (P)Shif t L ock Release Reverse (R)
Neutral (N)
Drive (D )
5
173

µµ µThese positions
are similar to D , except when you
select the D position, only the f irst
f our gears are selected. When you
select D , only the f irst three gears
are selected. D can also keep the
transmission f rom cycling between
f ourth and f if th gears in stop-and-go
driving, and D can keep the
transmission f rom cycling between
third and f ourth gears. This position locks
thetransmissioninsecondgear.It
does not downshif t to f irst gear
when you come to a stop.
Use Second gear: For more power when climbing.
To increase engine braking when
going down steep hills.
For starting out on a slippery
surf ace or in deep snow.
When driving downhill with a
trailer. With the lever in this
position, the transmission locks in
First gear.
If you shif t into First position when
the vehicle speed is above 31 mph
(50 km/h), the transmission shif ts
into Second gear f irst to avoid
sudden engine braking.
If you exceed the maximum speed
f or the gear you are in, the engine
speed will enter into the tachometer’s
red zone. If this occurs, you may f eel
the engine cut in and out. This is
caused by a limiter in the engine’s
computer controls. The engine will
run normally when you reduce the
RPM below the red zone.
Use D to provide engine braking
when going down a steep hill. D
gives you more power and increased
engine braking.
5
4
3 4
3
3 3
Automatic Transmission
Driving
Drive(D,D) Second(2)First(1)
Engine Speed L imiter43
174

Set the Parking brake.
Make sure the ignition switch is in
the LOCK (0) position.
To release the Reverse Lockout,
make sure the ignition switch is in
the ACCESSORY (I) position. Put a cloth on the edge of the Shif tLock Release slot cover. Using a
key, caref ully pry on the edge of
the cover to remove it.
Insert the key in the Shift Lock
Release slot.
Push down on the key and move
the shift lever out of Park to
Neutral.To release the reverse lockout,
move the shift lever from Neutral
to Reverse, then to Park.
Remove the key from the Shift
Lock Release slot, then install the
cover. Press the brake pedal, and
restart the engine.
If you need to use the Shif t Lock
Release, it means your vehicle is
developing a problem. Have it
checked by an Acura dealer.
Do this if pushing on the brake pedal
does not shif t the transmission out of
Park. This procedure is also used to
release the Reverse Lockout.
1.
2.
3.
4.
5.6.
Automatic Transmission
Driving
Shif t L ock Release
175
COVER
SHIFT LOCK RELEASE SLOT

The Variable Torque Management
4WD System (VTM-4) automatically
transf ers varying amounts of engine
torque to the rear wheels under
lower traction conditions.
If more traction is needed when your
MDX is stuck, or is likely to become
stuck, you can use the VTM-4 Lock
button to increase torque to the rear
wheels.The vehicle must be stopped with
the engine running.
Move the shift lever to First (1),
Second (2), or Reverse (R) gear.
Press the VTM-4 Lock button.
The light in the button will come
on.
To get unstuck, apply light pressure
to the accelerator pedal. Do not spin
the f ront tires f or more than a f ew
seconds. Because of the amount of
torque applied to the rear tires, they
should not spin. This is normal. If
you are not able to move the vehicle,
stop and reverse direction. do
one of the f ollowing: Press the VTM-4 Lock button.
Move the shift lever to D , D or
D.
Turn the ignition switch to LOCK
(0).
The VTM-4 Lock will temporarily
disengage when the vehicle speed
exceeds 18 mph (30 km/h). It will
automatically engage again as the
speed slows below 18 mph (30
km/h). The button light will remain
on.
1.
2.
3.
54
3
To Engage the VTM-4 Lock To Disengage the VTM-4 Lock,
VTM-4 System
Driving176
NOTICE: NOTICE:
Do not use the VTM-4 Lock
button on dry, paved roads. Driving on
dry, paved roads with VT M-4 Lock ON
may damage the rear dif f erential when
making a turn. Strange noise and
vibration can also result. Do not continuously spin the
f ront tires of your MDX. Continuously
spinning the f ront tires can cause
transmission or rear dif f erential
damage.

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