2004 Acura MDX check engine

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 ).
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See page f or additional guidelinesf or driving of f -highway. 192
Driving Guidelines, Preparing to Drive
Driving
Driving Guidelines
Preparing to Drive
170

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

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

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

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) or 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. Follow the
manufacturer’s attachment
instructions caref ully.
Perf orm this procedure every day
immediately bef ore you begin towing.
Otherwise, severe automatic
transmission damage will occur.Start the engine. Check the transmission f luid level
(see page ). Press on the brake pedal. Shif t the
lever through all the positions (P,
R,N,D,D,D,2,1).
ShifttoD ,thentoN.Letthe
engine run f or three minutes, then
turn it off.
Release the parking brake.
Leave the ignition switch in the
ACCESSORY (I) position 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.
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.)
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Ext ended T owing
Towing Your Vehicle Behind a Motorhome
Driving191
NOTICE: T he steering system can be
damaged if the steering wheel is locked.
Leave the ignition switch in the
ACCESSORY (I) position, and make
sure the steering wheel turns f reely
bef ore you begin towing.

Before you leave the pavement, be
sure to do all scheduled maintenance
and service and that you inspect your
vehicle. Pay special attention to the
condition of the tires and check the
tire pressure.
After you return to the pavement,
caref ully inspect your vehicle to
make sure there is no damage that
could make driving it unsaf e.
Recheck the condition of the tires
and the tire pressure.
The route presents limits (too steep
or bumpy roads). You have limits
(driving skill and comf ort). And your
vehicle has limits (traction, stability,
and power).
Driving of f -highway can be
hazardous if you f ail to recognize
limits and take the proper
precautions.Forbettertractiononallsurfaces,
accelerate slowly and gradually build
up speed. If you try to start too fast
on wet soil, mud, snow, or ice, you
might not have enough traction to
get underway and you may dig
yourself a hole. Starting with the
shif t lever in second gear (2) will
help you have a smoother start on
snow and ice.
Keep in mind that you will usually
need more time and distance to
brake to a stop on unpaved surf aces.
Avoid hard braking. Do not pump
the brakes; let the anti-lock braking
system pump them f or you.
Debris in the road can damage your
suspension or other components.
Because your vehicle has a high
center of gravity, driving over a large
obstacle, or allowing a wheel to drop
into a deep hole can cause yourvehicle to tip or roll over.
If you can’t clearly see all road
conditions or obstacles, walk the
slope bef ore you drive on it. If you
have any doubt whether or not you
can saf ely drive on the slope, don’t
do it. Find another route.
Bef ore driving through water, stop
and make sure that:
The water is not deep enough to
cover your wheel hubs, axles or
exhaust pipe. You could stall and
not be able to restart your engine.
The water can also damage
important vehicle components.
If you are driving up a hill and f ind
that you cannot continue,
. Your vehicle could roll
over. Slowly back down the hill,
f ollowing the same route you took up
the hill.
do not try to
turn around
Check Out Your Vehicle
Remember: Accelerating and Braking
Avoiding ObstaclesDriving on Slopes
Crossing a Stream
Of f -Highway Driving Guidelines
Driving193

This section explains why it is
important to keep your vehicle well
maintained and how to f ollow basic
maintenance saf ety precautions.
This section also includes
Maintenance Schedules f or normal
driving and severe driving conditions,
a Maintenance Record, and instruc-
tions f or simple maintenance tasks
you may want to take care of
yourself .
If you have the skills and tools to per-
f orm more complex maintenance
tasks on your Acura, you may want
to purchase the Service Manual. See
page f or inf ormation on how to
obtain a copy, or see your Acura
dealer.......................
Maintenance Saf ety .196
.................
Maintenance Schedule . 197
....................
Maintenance Record .201
..............................
Fluid Locations .204
........................
Adding Engine Oil .205
.........
Changing the Oil and Filter . 206
..............................
Engine Coolant .208
....................
Windshield Washers .209
....
Automatic Transmission Fluid . 210
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Dif f erential Fluid .211
.............
Transf er Assembly Fluid . 211
....................................
Brake Fluid .212
....................
Power Steering Fluid . 213
....................................
Timing Belt .213
....................................
Hood Latch .214
.............................................
Lights .214
.......................................
Seat Belts .218
.....................................
Floor Mats .218
.................................
Wiper Blades .219
...............................................
Tires .221
...................
Checking the Battery . 226
.............................
Vehicle Storage .227
269
Maintenance
Maint enance195

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Your authorized Acura dealer knows
your vehicle best and can provide
competent, ef f icient service.
However, service at a dealer is not
mandatory to keep your warranties
in effect. Maintenance may be done
by any qualif ied service f acility or
skilled person to keep your
warranties in ef f ect. Keep all the
receipts as proof of completion, and
have the person who does the work
f ill out the Maintenance Record.
Check your warranty booklet f or
more inf ormation.
We recommend the use of Acura
parts and f luids whenever you have
maintenance done.
According to state and federal
regulations, f ailure to perf orm
maintenance on the items marked
with will not void your emissions
warranties. However, Acura
recommends that all maintenance
services be perf ormed at the
recommended time or mileage
period to ensure long-term reliability.
Youshouldcheckthefollowing
items at the specif ied intervals. If
you are unsure of how to perf orm
any check, turn to the appropriate
page listed. Engine oil level Check every
time you fill the fuel tank. See
page .
Engine coolant level Check the
radiator reserve tank every time
you f ill the f uel tank. See page .
Automatic transmission Check
the f luid level monthly. See page
.
Tires Check the tire pressure
monthly. Examine the tread f or
wear and foreign objects. See page .
Lights Check the operation of
the headlights, parking lights,
taillights, high-mount brake light,
turn signals, brake lights, and
license plate light monthly. See
page .
U.S. Vehicles:
Brakes Check the f luid level
monthly. See page .161
162
210
222 212
214
Maintenance Schedule
Maint enance
Servicing Your Vehicle
Owner’s Maintenance ChecksMaintenance,
replacement, or repair of
emissions control devices and
systems may be done by any
automotive repair establishment
or individual using parts that are
‘‘certif ied’’ to EPA standards.
198