2003 Acura MDX check engine light

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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.
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3
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Maintenance Schedule for Severe Conditions

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CONT INUED
Maint enance301
Canadian Owners U.S. Owners A, B, C, D
B
C A
D
Use the Maintenance Schedule for Severe Conditions.
3,750 mi/6,000 km
7,500 mi/12,000 km/6 mos
11,250 mi/18,000 km
15,000 mi/24,000 km/1 yr
18,750 mi/30,000 km
22,500 mi/36,000 km
26,250 mi/42,000 km
30,000 mi/48,000 km/2 yrs
33,750 mi/54,000 km
37,500 mi/60,000 km
41,250 mi/66,000 km
3yrs
45,000 mi/72,000 km/3 yrs
48,750 mi/78,000 km
52,500 mi/84,000 km
56,250 mi/90,000 km
60,000 mi/96,000 km/4 yrs
63,750 mi/102,000 km
67,500 mi/108,000 km
71,250 mi/114,000 km Refer to page to determine which schedule to use.
Service at the indicated distance or time, whichever comes first. Do the items in as required for each distance/time interval.
Replace engine oil and filter.
Inspect front and rear brakes.
Rotate tires (follow pattern on page335).
Inspect tie rod ends, steering gearbox and boots.
Inspect suspension components.
Inspect driveshaft boots.
Replace air cleaner element every 15,000 mi
(24,000 km) under dusty conditions. Otherwise, use
Normal Conditions schedule.
Replace rear differential fluid .
Check parking brake adjustment.
Lubricate all hinges, locks, and latches with
multipurpose grease.
Inspect brake hoses and lines (including ABS).
Check all fluid levels, condition of fluids, and check
for leaks.
Inspect exhaust system .
Inspect fuel lines and connections .
Check all lights.
Inspect the underbody.
Inspect and adjust drive belts.
Replace transmission fluid.
Replace transfer assembly fluid.
Replace dust and pollen filter .
Do items in A.
Do items in A, B.
Do items in A.
DoitemsinA,B,C.
Do items in A.
Do items in A, B.
Do items in A.
DoitemsinA,B,C,D.
Do items in A.
Do items in A, B.
Do items in A.
Replace brake fluid (independent of mileage).
DoitemsinA,B,C.
Do items in A.
Do items in A, B.
Do items in A.
DoitemsinA,B,C,D.
Do items in A.
Do items in A, B.
Do items in A.
300
3
2
Maintenance Schedule for Severe Conditions (listed by distance/time)

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Youshouldcheckthefollowing
items at the specif ied intervals. If
you are unsure of how to perf orm
any check, turn to the page given.
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 .Tires Check the tire pressure
monthly. Examine the tread f or
wear and foreign objects. See page
.
Automatic transmission Check
the f luid level monthly. See page .
Brakes Check the f luid level
monthly. See page . Lights Check the operation of
the headlights, parking lights,
taillights, high-mount brake light,
turn signals, brake lights, and
license plate lights monthly. See
page .
240
241
317 319 332
339
Owner Maintenance Checks
Maint enance305

Install a new oil f ilter according to
instructions that come with it.
Put a new washer on the drain bolt,
then reinstall the drain bolt.
Tighten it to: Remove the oil f ilter and let the
remaining oil drain. A special
wrench (available f rom your Acura
dealer) is required to remove the
f ilter.Refill the engine with the recom-
mended oil.
Engine oil change capacity
(including f ilter):
Turn of f the engine, let it sit f or
several minutes, then check the oil
level. If necessary, add oil to bring
the level to the upper mark on the
dipstick. Let the engine run f or several
minutes, then check the drain bolt
and oil f ilter f or leaks. Replace the engine oil f ill cap.
Start the engine. The oil pressure
indicator light should go out within
f ive seconds. If it does not, turn of f
the engine and check your work.
9. 8. 7. 6.
4.
5. 3.
Engine Oil
Maint enance310
OIL FILTER
29 lbf·ft (39 N·m , 4.0 kgf·m) 4.5 US qt (4.3
)
Improper disposal of engine oil can be
harmf ul to the environment. If you
change your own oil, please dispose of
the used oil properly. Put it in a sealed
container and take it to a recycling
center. Do not discard it in a trash bin
or dump it on the ground.

Fill the reservoir with a good-quality
windshield washer f luid. This
increases the cleaning capability and
prevents f reezing in cold weather.
When you ref ill the reservoir, clean
the edges of the windshield wiper
blades with windshield washer f luid
on a clean cloth. This will help to
condition the blade edges.
The low washer level indicator will
light when the level is low (see page
).
Check the level in the windshield
washer reservoir at least monthly
duringnormaluse.Inbadweather,
when you use the washers of ten,
check the level every time you stop
for fuel.
71
Windshield Washers
Maint enance316
Do not use engine antif reeze or a
vinegar/water solution in the
windshield washer reservoir.
Antif reeze can damage your vehicle’s
paint, while a vinegar/water solution
can damage the windshield washer
pump.
Use only commercially-available
windshield washer f luid.

Run the air conditioning at least once
a week during the cold weather
months. Run it f or at least ten
minutes while you are driving at a
steady speed with the engine at
normal operating temperature. This
circulates the lubricating oil con-
tained in the ref rigerant.If the air conditioning does not get as
cold as before, have your dealer
check the system. Recharge the
system with Ref rigerant HFC-134a
(R-134a). (See Specif ications on page
.)
Your vehicle’s air conditioning is a
sealed system. Any major mainte-
nance, such as recharging, should be
done by a qualif ied mechanic. You
can do a couple of things to make
sure the air conditioning works
ef f iciently.
Periodically check the engine’s
radiator and air conditioning
condenser f or leaves, insects, and
dirt stuck to the f ront surf ace. These
block the air f low and reduce cooling
ef f iciency. Use a light spray f rom a
hose or a sof t brush to remove them. 390
A ir Condit ioning Syst em
Maint enance330
AIR CONDITIONING
CONDENSER
Whenever you have the air conditioning
system serviced, make sure the service
f acility uses a ref rigerant recycling
system. This system captures the
ref rigerant f or reuse. Releasing
ref rigerant into the atmosphere can
damage the environment.
The condenser and radiator f ins bend
easily. Only use a low-pressure spray
or sof t-bristle brush to clean them.

Diagnosing why your engine won’t
start f alls into two areas, depending
on what you hear when you turn the
key to START (III):You hear nothing, or almost
nothing. The engine’s starter
motor does not operate at all, or
operates very slowly.
You can hear the starter motor
operating normally, or the starter
motor sounds like it is spinning
f aster than normal, but the engine
does not start up and run.
When you turn the ignition switch to
START (III), you do not hear the
normal noise of the engine trying to
start. You may hear a clicking sound
or series of clicks, or nothing at all.
Check these things: Check the transmission interlock.
The transmission must be in Park
orNeutralorthestarterwillnot
operate.
Turn the ignition switch to ON (II).
Turn on the headlights and check
their brightness. If the headlights
are very dim or don’t light at all,
the battery is discharged. See
on page .
Turn the ignition switch to START
(III). If the headlights do not dim,
check the condition of the f uses. If
thefusesareOK,thereisproba-
bly something wrong with the
electrical circuit for the ignition
switch or starter motor. You will
need a qualif ied technician to
determine the problem. (See on page .)If the headlights dim noticeably or
go out when you try to start the
engine, either the battery is dis-
charged or the connections are
corroded. Check the condition of
the battery and terminal connec-
tions (see page ). You can
then try jump starting the vehicle
f rom a booster battery (see page
).
In this case, the starter motor’s
speed sounds normal, or even f aster
than normal, when you turn the
ignition switch to START (III), but
the engine does not run. Are you using the proper starting
procedure? Ref er to on page .
369
385 326
369
252
Nothing Happens or the Starter
Motor Operates Very Slowly Jump Starting
Emergency T owingT he Starter Operates Normally
Starting the
Engine
T aking Care of t he Unexpect ed
If Your Engine Won’t Start
368

To jump start your vehicle, f ollow
these directions closely:
If your vehicle’s battery has run
down,youmaybeabletostartthe
engine by using a booster battery.
Although this seems like a simple
procedure, you should take several
precautions.
Put the transmission in Neutral or
Park, and set the parking brake. Open the hood and check the
physical condition of the battery
(see page ). In very cold
weather, check the condition of
the electrolyte. If it seems slushy
or like ice, do not try jump starting
until it thaws.
Turn of f all the electrical acces-
sories: heater, A/C, climate
control, stereo system, lights, etc.
You cannot start your Acura by
pushing or pulling it.
Your vehicle has the Immobilizer
System. You should use a
properly-coded master or valet key
to start the engine (see page ).
A key that is not properly coded
will cause the immobilizer system
indicator in the dash panel to blink
rapidly.
Do you have f uel? Turn the
ignition switch to ON (II) for a
minute and watch the f uel gauge.
The low f uel level warning light
may not be working, so you were
not reminded to f ill the tank.
There may be an electrical
problem, such as no power to the
f uel pump. Check all the f uses
(see page ).
If youfindnothingwrong,youwill
need a qualif ied technician to f ind
the problem. See on page . 1.
2.
91
380 252 326
CONT INUED
Jump Starting
Emergency
Towing
If Your Engine Won’t Start, Jump Starting
T aking Care of t he Unexpect ed369
A battery can explode if you do
not follow the correct procedure,
seriously injuring anyone
nearby.
Keep all sparks, open flames,
and smoking materials away
from the battery. If a battery sits in extreme cold, the
electrolyte inside can f reeze.
Attempting to jump start with a f rozen
battery can cause it to rupture.