2003 Acura MDX Owner's Manua

This indicator should light when the
ignition switch is ON (II), and go out
af ter the engine starts. It should
never come on when the engine is
running. If it starts f lashing, it
indicates that the oil pressure
dropped very low f or a moment, then
recovered. If the indicator stays on
with the engine running, it shows
that the engine has lost oil pressure
and serious engine damage is
possible. In either case, you should
take immediate action.Saf ely pull of f the road and shut
of f the engine. Turn on the hazard
warning indicators.
If necessary, add oil to bring the
level back to the full mark on the
dipstick (see page ). Let the vehicle sit f or a minute.
Open the hood and check the oil
level (see page ). Although oil
levelandoilpressurearenot
directly connected, an engine that
is very low on oil can lose pressure
during cornering and other driving
maneuvers.Start the engine and watch the oil
pressure indicator. If the light
does not go out within ten 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 .)
1.
2.
3. 4.
240 307 385
L ow Oil Pressure Indicator
T aking Care of t he Unexpect ed
Emergency
Towing
373
LOW OIL PRESSURE INDICATOR
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.

This indicator should come on when
the ignition switch is ON (II), and go
out af ter the engine starts. If it
comes on brightly when the engine
is running, it indicates that the
charging system has stopped
charging the battery.By eliminating as much of the
electrical load as possible, you can
drive several miles (kilometers)
before the battery is too discharged
to keep the engine running. Drive to
a service station or garage where
you can get technical assistance.
Immediately turn of f all electrical
accessories:radio,heater,A/C,
climate control, rear def ogger, cruise
control, etc. Try not to use other
electrically-operated controls such as
the power windows. Keep the engine
running and take extra care not to
stall it. Starting the engine will
discharge the battery rapidly.
T aking Care of t he Unexpect ed
Charging System Indicator
374
CHARGING SYSTEM INDICATOR

If the indicator remains on past three
driving trips, or the f uel cap was not
loose or missing, have the vehicle
checked by the dealer as soon as
possible. Drive moderately until the
dealer has inspected the problem.
Avoid full-throttle acceleration and
driving at high speed.
Youshouldalsohavethedealer
inspect your vehicle if this indicator
comes on repeatedly, even though it
may turn of f as you continue driving.
This indicator comes on when you
turn the ignition switch ON (II), and
goes of f af ter the engine starts. If it
comes on at any other time, it
indicates 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 your vehicle to
put out excessive emissions.
Continued operation may cause
serious damage. If you have recently ref ueled your
vehicle, the cause of this indicator
coming on could be a loose or
missing f uel f ill cap. Check the cap
and tighten it until it clicks several
times. Replace the f uel f ill cap if it is
missing. Tightening the cap will not
make the indicator turn of f
immediately; it takes at least three
driving trips.
This indicator may also come on
along with the ‘‘D ’’ indicator.
5
Malf unction Indicator L amp
T aking Care of t he Unexpect ed375
MALFUNCTION INDICATOR LAMP
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.

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 sure
these codes are set. If they are not
set, the test cannot be completed.
If your vehicle’s battery has been
disconnected or gone dead, these
codes are erased. It takes several
days of driving under various
conditions to set the codes again.If possible, do not take your vehicle
f or a state emissions test until the
readiness codes are set. To check if
they are set, turn the ignition ON (II),
but do not start 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 5 times, the readiness
codes are not set. Drive your vehicle
as usual f or one or two weeks, then
check again. If the readiness codes
are still not set, see your Acura
dealer.
T aking Care of t he Unexpect ed
Malf unction Indicator L amp
Readiness Codes
376

However, if the brake pedal does not
f eel normal, you should take
immediate action. Because of the
brake system’s dual-circuit design, a
problem in one part of the system
will still give you braking at two
wheels. You will f eel the brake pedal
go down much f arther bef ore the
vehicle begins to slow down, and you
will have to press harder on the
pedal. The distance needed to stop
will be much longer. If it comes on at any other time, it
indicates a problem with the vehicle’s
brake system. In most cases, the
problem is a low f luid level in the
brake f luid reservoir. Press lightly on
the brake pedal to see if it f eels
normal. If it does, check the brake
f luid level the next time you stop at a
service station (see page ). If the
f luid level is low, take the vehicle to
your dealer and have the brake
system inspected f or leaks or worn
brake pads.Slow down by shif ting to a lower
gear, and pull to the side of the road
when it is saf e. Because of the
longer distance needed to stop, it is
hazardous to drive the vehicle. You
should have it towed, and repaired as
soon as possible. (See
on page .)
If you must drive the vehicle a short
distance in this condition, drive
slowly and cautiously.
The Brake System Indicator comes
on when you turn the ignition ON
(II). If the parking brake is not set, it
goes of f af ter you start the engine. If
the parking brake is set, it goes of f
when you f ully release the parking
brake with the engine running. 319
385Emergency
Towing
Brake System Indicator
T aking Care of t he Unexpect ed377
U. S. indicator shown BRAKE SYSTEM INDICATOR

If the electric motor will not close
the moonroof , do the f ollowing:Check the f use f or the moonroof
motor (see page ). If the f use
is blown, replace it with one of the
same or lower rating.
Try closing the moonroof . If the
new f use blows immediately or the
moonroof motor still does not
operate, you can close the
moonroof manually.
Get the moonroof wrench out of
the tool kit in the cargo area. To remove the round plug in the
center of the headliner, turn the
plug by using a screwdriver or
coin, then pry it out. Make sure to
align the tabs on the round plug to
the notches on the ceilling as
shown in the illustration.Insert the moonroof wrench into
the socket behind this plug. Turn
the wrench until the moonroof is
f ully closed.
Remove the wrench. Reinstall the
round plug.
1.
380
2.
3.
6. 5.
4.
T aking Care of t he Unexpect ed
Closing t he Moonroof
378
TAB NOTCH
ROUND PLUG SOCKET

All the electrical circuits in your
vehicle have fuses to protect them
f rom a short circuit or overload.
These f uses are located in three f use
boxes.Theinteriorfuseboxesarelocated
underneath the dashboard on each
side.Toopenthefuseboxonthe
passenger’s side, pull the right edge
of the cover.
Fuses
T aking Care of t he Unexpect ed379
DRIVER’S SIDE INTERIOR
PASSENGER’S SIDE INTERIOR

If something electrical in your
vehicle stops working, the first thing
youshouldcheckforisablownfuse.
Determine f rom the chart on pagesand , or the diagram on the
f use box lid (the diagram f or the
driver’s side interior f use box is on
the kick panel below the f use box),
which f use or f uses control that
component. Check those f uses f irst,
but check all the f uses bef ore
deciding that a blown f use is not the
cause. Replace any blown f uses and
check the component’s operation.
Turn the ignition switch to LOCK
(0). Make sure the headlights and
all other accessories are off.
Remove the cover f rom the f use
box.
The secondary f use box is in the
engine compartment next to the
battery.
The primary under-hood f use box is
located in the back of the engine
compartment on the passenger’s side.
To open it, push the tabs as shown.
1.
2. 383 384
Checking and Replacing Fuses
Fuses
T aking Care of t he Unexpect ed380
UNDER-HOOD
UNDER-HOOD