2008 Acura MDX check engine

µµ
Check the level on the side of the
reservoir when the engine is cold.
The f luid should be between the
UPPER LEVEL and LOWER LEVEL.
If not add power steering f luid to the
UPPER LEVEL mark. Always use Honda Power Steering
Fluid. You may use another power
steering f luid as an emergency
replacement, but have the power
steering system f lushed and ref illed
with Honda PSF as soon as possible.
The timing belt should be replaced
at the intervals shown in the
maintenance minder schedule.
A low power steering f luid level can
indicate a leak in the system. Check
the f luid level f requently, and have
the system inspected as soon as
possible.
If you are not sure how to add
f luid, contact your dealer.
Pour the f luid slowly and caref ully so
you do not spill any. Clean up any
spills immediately; it could damage
components in the engine
compartment. Replace the timing belt every 60,000
miles (U.S.) or every 100,000 km
(Canada) if you regularly drive your
vehicle in any of the f ollowing
conditions:
In very high temperatures
(over 110°F, 43°C).
In very low temperatures
(under 20°F, 29°C).
Frequently tow a trailer.
Timing Belt
Power Steering Fluid
Power Steering Fluid, Timing Belt
402
UPPER LEVEL
LOWER LEVEL
Turning the steering wheel to f ull lef t
or right lock and holding it there can
damage the power steering pump.
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2008 MDX

Diagnosing why the engine won’t
start f alls into two areas, depending
on what you hear when you turn the
ignition switch to the START (III)
position: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
the START (III) position, you do not
hear the normal noise of the engine
trying to start. You may hear a
clicking sound, a series of clicks, or
nothing at all. If the headlights dim noticeably or
go out when you try to start the
engine, either the battery is
discharged 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 the START (III)
position, but the engine does not run. Are you using a properly coded
key? An improperly coded key will
cause the immobilizer system
indicator in the instrument panel
to blink rapidly (see page ).
Check these things:
Check the transmission interlock.
The transmission must be in Park
or neutral or the starter will not
operate.
Turn the ignition switch to the ON
(II) position. Turn on the
headlights, and check their
brightness. If the headlights are
very dim or do not come on at all,
the battery is discharged. See
on page .
Turn the ignition switch to the
START (III) position. If the
headlights do not dim, check the
condition of the f uses. If the f uses
areOK,thereisprobably
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 . 421
432
432
446 70
CONT INUED
Nothing Happens or the Starter
Motor Operates Very Slowly T he Starter Operates Normally
Jump Starting
Emergency T owing
If theEngineWon’tStart
T aking Care of t he Unexpect ed
431
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2008 MDX

Are you using the proper starting
procedure? Ref er toon page .
Do you have f uel? Check the f uel
gauge; the warning indicator may
not be working.
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 . Although this seems like a simple
procedure, you should take several
precautions.
You cannot start your vehicle by
pushing or pulling it. Put the transmission in neutral or
Park, and set the parking brake.
Turn of f all the electrical acces-
sories: heater, A/C, climate
control, audio system, lights, etc.
Open the hood, and check the
physical condition of the battery.
In very cold weather, check the
condition of the electrolyte. If it
seems slushy or f rozen, do not try
jump starting until it thaws.
1.
2.
339
440 446 Starting the
Engine
Emergency
Towing Jump Starting
If the Engine Won’t Start, Jump Starting
To Jump Start Your Vehicle:
432
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.
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2008 MDX

µ
´ ´ Start your vehicle. If the starter
motor still operates slowly, check
that the jumper cables have good
metal-to-metal contact.
If the booster battery is in another
vehicle, have an assistant start
that vehicle and run it at a fast idle.
Connect the second jumper cable
to the negative ( ) terminal on
the booster battery. Connect the
other end to the grounding strap
as shown. Do not connect this
jumper cable to any other part of
the engine.
The numbers in the illustration show
you the order to connect the jumper
cables.
Connect one jumper cable to the
positive ( ) terminal on your
vehicle’s battery. Connect the
other end to the positive ( )
terminal on the booster battery. Once the vehicle is running,
disconnect the negative cable f rom
your vehicle, then f rom the
booster battery. Disconnect the
positive cable f rom your vehicle,
and then from the booster battery.
Keep the ends of the jumper cables
away from each other and any metal
on the vehicle until everything is
disconnected. Otherwise, you may
cause an electrical short.
5.
7.
4. 6.
3.
Jump Starting
T aking Care of t he Unexpect ed
433
BOOSTER BATTERY
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2008 MDX

If the temperature gauge stays at
the red mark, turn of f the engine.
Look f or any obvious coolant leaks,
such as a split radiator hose.
Everything is still extremely hot,
so use caution. If you f ind a leak, it
must be repaired bef ore you
continue driving (seeon page ).
If you do not f ind an obvious leak,
check the coolant level in the
radiator reserve tank. Add coolant
if the level is below the MIN mark.
If there was no coolant in the
reserve tank, you may need to add
coolant to the radiator. Let the
engine cool down until the pointer
reaches the middle of the tempera-
ture gauge, or lower, bef ore check-
ing the radiator. Using gloves or a large heavy
cloth, turn the radiator cap
counterclockwise, without pushing
down, to the f irst stop. Af ter the
pressure releases, push down on
the cap, and turn it until it comes
off.Start the engine and set the
climate control to AUTO at ‘‘Hi.’’
Add coolant to the radiator up to
the base of the f iller neck. If you
do not have the proper coolant
mixture available, you can add
plain water. Remember to have
the cooling system drained and
ref illed with the proper mixture as
soon as you can.
Put the radiator cap back on
tightly. Run the engine, and check
the temperature gauge. If it goes
back to the red mark, the engine
needs repair (see
on page ).
If the temperature stays normal,
check the coolant level in the
radiator reserve tank. If it has
gone down, add coolant to the
MAX mark. Put the cap back on
tightly.
4.
5.
6.
7. 8.9.
10.
11.
446
446
If theEngineOverheats
Emergency
Towing
Emergency
Towing
T aking Care of t he Unexpect ed
435
Removing the radiator cap
while the engine is hot can
cause the coolant to spray out,
seriously scalding you.
Always let the engine and
radiator cool down before
removing the radiator cap.
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2008 MDX

Saf ely pull of f the road, and shut
of f the engine. Turn on the hazard
warning indicators.
Let the vehicle sit f or a minute.
Open the hood, and check the oil
level (see page ). An engine
very low on oil can lose pressure
during cornering and other driving
maneuvers.
If necessary, add oil to bring the
level back to the full mark on the
dipstick (see page ).
Start the engine, and watch the oil
pressure indicator. If it does not go
out within 10 seconds, turn of f the
engine. There is a mechanical
problem that needs to be repaired
bef ore you can continue driving
(see on page).
This indicator should never come on
when the engine is running. If it
starts flashing or stays on, the oil
pressure has dropped very low or
lost pressure. Serious engine
damage is possible, and you should
take immediate action.
You will also see a ‘‘CHECK
ENGINE OIL LEVEL’’ message on
the multi-information display when
this indicator comes on.
If the charging system indicator
comes on brightly when the engine
is running, the battery is not being
charged.
You will also see a ‘‘CHECK
CHARGING SYSTEM’’ message on
the multi-information display (see
page ).
Immediately turn of f all electrical
accessories. Try not to use other
electrically operated controls such as
the power windows. Keep the engine
running; starting the engine will
discharge the battery rapidly.
Go to a service station or garage
where you can get technical
assistance.
1.
2.
3.
4.
326
393
446 81
L ow Oil Pressure Indicator, Charging System Indicator
Emergency T owing
L ow Oil Pressure
Indicator
Charging System
Indicator
436
Running the engine with low oil
pressure can cause serious mechanical
damage almost immediately. Turn of f
the engine as soon as you can saf ely get
the vehicle stopped.
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2008 MDX

If the indicator comes on repeatedly,
even though it may turn of f as you
continue driving, have your vehicle
checked by the dealer as soon as
possible.
If this indicator comes on
while driving, it means one
of the engine’s emissions control
systems may have a problem. Even
though you may f eel no dif f erence in
your vehicle’s perf ormance, it can
reduce your f uel economy and cause
increased emissions. Continued
operation may cause serious damage.
If you have recently ref ueled your
vehicle, the indicator coming on
could be due to a loose or missing
f uel f ill cap. Tighten the cap until it
clicks at least once. Tightening the
cap will not turn the indicator of f
immediately; it can take several days
of normal driving. You will also see a ‘‘CHECK
EMISSION SYSTEM’’ message on
the multi-information display (see
page ).
Your vehicle has certain ‘‘readiness
codes’’ that are part of the on-board
diagnostics f or the emissions
systems. In some states, part of the
emissions testing is to make surethese codes are set. If they are not
set, the test cannot be completed.
If the battery in your vehicle has
been disconnected or gone dead,
thesecodesmaybeerased.Ittakes
several days of driving under various
conditions to set the codes again.
To check if they are set, turn the
ignition switch to the ON (II)
position, without starting the engine.
The malf unction indicator lamp will
come on f or 20 seconds. If it then
goes of f , the readiness codes are set.
If it blinks f ive times, the readiness
codes are not set. If possible, do not
take your vehicle f or an emissions
test until the readiness codes are set.
Refer to for
more information (see page ).
81
463
Malf unction Indicator L amp
Readiness CodeEmissions T esting
T aking Care of t he Unexpect ed
437
If you keep driving with the
malf unction indicator lamp on, you can
damage your vehicle’s emissions
controls and engine. Those repairs may
not be covered by your vehicle’s
warranties.
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2008 MDX

CONT INUED
...
Accessories and Modif ications .330
ACCESSORY (Ignition Key
.....................................
Position) .129
............
Accessory Power Sockets .166
...........................
AC Power Outlet .167
................
Active Damper System .361
.....................................
Acura Link .308
....................
Additives, Engine Oil .394
...............................
Airbag (SRS) .9,24
..............
Air Conditioning System .170
.....................
Rear A/C Control .175
.......................
Air Outlets (Vents) .177
.......................
Air Pressure, Tires .415
......................................
Antif reeze .396
Anti-lock Brakes (ABS)
....................
Indicator Light .66,357
...................................
Operation .357
..............
Anti-thef t, Audio System .235
Anti-thef t Steering Column
............................................
Lock .129
................
Audio System .180,181,200
Auto Control Mode, Starting
........................................
Engine .339
..........
Automatic Climate Control .170 .......................
Automatic Lighting .119
...
Automatic Seat Belt Tensioners .22
.............
Automatic Speed Control .270
..............
Automatic Transmission .341
..........................
Capacity, Fluid .452
...............
Checking Fluid Level .399
.......................................
Shif ting .341
Shif t Lever Position
...............................
Indicators .341
................
Shif t Lever Positions .342
....................
Shif t Lock Release .346
................................
Cancel Button .272
............................
Capacities Chart .452
Battery
Charging System ...........................
Indicator .65,436
............................
Jump Starting .432
..............................
Maintenance .421
............................
Specif ications .453
..............................
Bef ore Driving .321
....................................
Belts,Seat .8,20
.........................
Beverage Holders .163
..................................
Booster Seats .55
Brakes
...........
Anti-lock System (ABS) .357 .............
Break-in, New Linings .322
...........................................
Fluid .401
.......................................
Parking .153
.................
System Indicator .65,438
........................
Wear Indicators .357
.............................
Braking System .356
.................
Break-in, New Vehicle .322
Brightness Control,
...............................
Instruments .123
......................
Brights, Headlights .118
Bulb Replacement
..........................
Back-up Lights .407
................
Front Parking Lights .404
........
Front Side Marker Lights .404
.................................
Headlights .403
.................................
Rear Bulbs .406
............................
Specif ications .453
....................
Turn Signal Lights .404
..............................
Bulbs, Halogen .403
Index
A
BC
INDEX
I
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2008 MDX