2003 Acura MDX headlight

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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

Check the operation of your vehicle’s
exterior lights at least once a month.
A burned out bulb can create an
unsaf e condition by reducing your
vehicle’s visibility and the ability to
signal your intentions to other
drivers.
Lights
Maint enance339
LOW BEAM HEADLIGHT
HIGH BEAM HEADLIGHT
FOG LIGHT PARKING LIGHT/
SIDE MARKER
TURN SIGNAL

Check the f ollowing:Headlights (low and high beam)
Parking lights
Taillights
Brake lights
High-mount brake light
Turn signals
Back-up lights
Hazard light f unction
License plate light
Side marker lights
Daytime running lights
(Canadian models)
If you f ind any bulbs are burned out,
replace them as soon as possible.
Refer to the chart on page to
determine what type of replacement
bulb is needed. 391
Lights
Maint enance340
BRAKE/TAILLIGHTS
HIGH-MOUNT BRAKE LIGHT
LICENSE PLATE LIGHTS
BACK-UP LIGHT
TAIL LIGHTS/
SIDE MARKER LIGHT TURN SIGNAL/
HAZARD LIGHT

Open the hood.
Theheadlightswereproperlyaimed
when your vehicle was new. If you
regularly carry heavy items in the
cargo area or pull a trailer,
readjustment may be required.
Adjustment of the headlights should
be perf ormed by a Acura technician
or other qualif ied mechanic.
Remove the bulb by turning it
approximately one-quarter turn
counterclockwise.
Your vehicle has halogen headlight
bulbs, two on each side. When
replacing a bulb, handle it by its steel
base and protect the glass from
contactwithyourskinorhard
objects. If you touch the glass, clean
it with denatured alcohol and a clean
cloth.
Remove the electrical connector
fromthebulbbysqueezingthe
connector to unlock the tab, then
slide the connector of f the bulb.
1. 2.
3.
CONT INUED
Replacing a Headlight Bulb
Headlight A iming
Lights
Maint enance341
BULB
CONNECTORHalogen headlight bulbs get very hot
when lit. Oil, perspiration, or a scratch
on the glass can cause the bulb to
overheat and shatter.

Remove the socket from the
headlight assembly by turning it
one-quarter turn counterclockwise.
To remove the f ront turn signal
bulb, push it in slightly and turn it
counterclockwise. To remove the
side marker bulb, pull it straight
out of its socket.Testthelightstomakesurethe
new bulb is working. Insert the socket back into the
headlight assembly. Turn it
clockwise to lock it in place. Install the new bulb into the
socket.
Push the electrical connector onto
the new bulb.
Insert the new bulb into the hole
and turn it one-quarter turn clock-
wise to lock it in place.
Turn on the headlights to test the
new bulb. 1.
2.
3.
4.
5.
4.
5.
6. Replacing Front Turn Signal/
Parking and Side Marker Light
Bulbs
Lights
Maint enance342
TAB

Turn on the headlights to test the
new bulb. Insert the new bulb into the hole
and turn it one-quarter turn clock-
wise to lock it in place.
Put the light assembly into the
bumper. Tighten the mounting
bolt.Remove the socket by turning it
one-quarter turn counterclockwise.
Open the tailgate. Use a
screwdriver protected with a cloth
to pry open the two covers.
Remove the two screws and
remove the rear light assembly
f rom the rear pillar.
Determine which of the f our bulbs
is burned out: brake/taillight, turn
signal/hazard lights, side marker
light, or back-up light. Remove the burned out bulb. To
remove the brake/taillight, back-
up or side marker light bulb, pull
the bulb straight out of its socket.
To remove the turn signal/hazard
light bulb, push it in and turn it
counterclockwise until it unlocks.
1.
2.
3.
4.
8. 6.
7.
5.
Replacing Rear Bulbs
Lights
Maint enance344

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

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