2002 Mercury Mountaineer bulb

Turn signal
Illuminates when the turn signals or
the hazard lights are turned on. If
the lights stay on continuously or
flash faster, check for a burned-out bulb.
High beams
Illuminates when the high beam
headlamps are turned on.
Low washer fluid (if equipped)
Illuminates when the windshield
washer fluid is low.
Charging system
Illuminates when the battery is not
charging properly.
AdvanceTrac
(if equipped)
Flashes when the AdvanceTrac
system is active. If the light remains
on, have the system serviced
immediately.
For more information, refer to the
Drivingchapter.
Door ajar
Illuminates when any door is open
(or not fully closed).
LOW
WASH
DOOR
AJAR
Instrumentation
12

BULBS
Replacing exterior bulbs
Check the operation of the following lamps frequently:
•Headlamps
•Foglamps
•High-mount brakelamp
•Brakelamps•Turn signal lamps
•Side marker lamps
•License plate lamp
•Tail lamps
•Back-up lamps
Do not remove lamp bulbs unless they can be replaced immediately with
new ones. If a bulb is removed for an extended period of time,
contaminants may enter the lamp housings and affect lamp performance.
Replacing headlamp bulbs
To remove the headlamp bulb:
1. Make sure headlamp switch is in
OFF position, then open the hood.
2. At the back of the headlamp, pry
up and remove the two retainer pins
to release the headlamp assembly
from the vehicle and pull headlamp
forward.
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268

3. Remove the protective dust cap
from the housing by turning
counterclockwise (when viewed
from the rear).
4. Disconnect the electrical
connector from the bulb by pulling
rearward.
5. Remove the bulb retaining ring by
rotating it counterclockwise.
6. Remove the old bulb from the lamp assembly by pulling it straight out
of the lamp assembly.
To install the new bulb:
Handle a halogen headlamp bulb carefully and keep out of
children’s reach. Grasp the bulb only by its plastic base and do
not touch the glass. The oil from your hand could cause the bulb to
break the next time the headlamps are operated.
1. Install the new bulb in lamp
assembly by pushing straight in with
the flat surface of the bulb’s plastic
base facing upward. You may need
to turn the bulb slightly to align the
grooves in the plastic base with the
tabs in the lamp assembly.
2. Install the bulb retaining ring over
the plastic base and lock the ring by
rotating clockwise until it snaps into place.
3. Connect the electrical connector to the bulb.
4. Install the protective dust cap and lock by rotating the cap clockwise
until it locks into position.
5. Install the headlamp on vehicle by aligning the lamp on the vehicle,
push rearward to fully seat the lamp assembly then insert and push the
two retainer pins down.
6. Turn the headlamps on and make sure they work properly. If the
headlamp was correctly aligned before you changed the bulb, you should
not need to align it again.
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269

Replacing front parking lamp/turn signal bulbs
1. Make sure headlamp switch is in
OFF position, then open the hood.
2. At the back of the headlamp, pry
up and remove the two retainer pins
to release the headlamp assembly
from the vehicle and pull headlamp
forward.
3. Rotate the bulb socket
counterclockwise and remove from
lamp assembly.
4. Carefully pull bulb straight out of
socket and push in the new bulb.
5. Install bulb socket in lamp
assembly by turning clockwise.
6. Install the headlamp on vehicle by
aligning the lamp on the vehicle,
push rearward to fully seat the lamp
assembly then insert and push the
two retainer pins down.
7. Turn the lamps on and make sure
they work properly.
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270

Replacing side repeater bulbs
1. Carefully pry the lamp assembly
away from the fender.
2. Rotate the bulb socket
counterclockwise and remove from
lamp assembly.
3. Carefully pull bulb straight out of
socket and push in the new bulb.
4. Install the bulb socket in lamp
assembly by turning clockwise.
5. Carefully install the lamp
assembly on the fender snapping it in place.
Replacing front/rear side marker bulbs
1. Reach under the side of the front
or rear bumper, rotate bulb socket
counterclockwise and remove from
lamp assembly.
2. Carefully pull bulb straight out of
socket and push in the new bulb.
3. Install bulb socket in lamp
assembly by turning clockwise.
Replacing tail/brake/turn/backup lamp bulbs
The tail/brake/turn/backup bulbs are located in the tail lamp assembly,
one just below the other. Follow the same steps to replace each bulb:
1. Open the liftgate to expose the
lamp assemblies.
2. Remove the two screws from the
lamp assembly.
3. Pull the lamp assembly towards
the rear and side of the vehicle at
an angle carefully removing it from
the vehicle.
4. Rotate the bulb socket
counterclockwise and remove from
lamp assembly.
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271

5. Pull the bulb straight out of the socket and push in the new bulb.
6. To complete installation, follow the removal procedure in reverse
order.
Replacing foglamp bulbs
1. Reach under the front of the
front bumper and remove the bulb
socket from the foglamp by turning
counterclockwise.
2. Disconnect the electrical
connector from the foglamp bulb.
3. Connect the electrical connector
to the new foglamp bulb.
4. Install the bulb socket in the foglamp turning clockwise.
Replacing license plate lamp bulbs
1. Remove two screws and the
license plate lamp assembly from
the liftgate.
2. Remove bulb socket from lamp
assembly by turning
counterclockwise.
3. Carefully pull the bulb from the
socket and push in the new bulb.
4. Install the lamp assembly on
liftgate with two screws.
Replacing license plate lamp bulbs
1. Remove two screws and the
license plate lamp assembly from
the liftgate.
2. Remove bulb socket from lamp
assembly by turning
counterclockwise.
3. Carefully pull the bulb from the
socket and push in the new bulb.
4. Install the lamp assembly on
liftgate with two screws.
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272

Replacing high-mount brake lamp bulbs
1. Remove the two screws and move
the lamp assembly away from the
liftgate.
2. Remove the bulb holder from the
lamp assembly by depressing the
snaps.
3. Pull the bulb straight out of the
socket and push in the new bulb.
Install the new bulbs in reverse
order.
USING THE RIGHT BULBS
Replacement bulbs are specified in the chart below. Headlamp bulbs
must be marked with an authorized“D.O.T.”for North America and an
“E”for Europe to assure lamp performance, light brightness and pattern
and safe visibility. The correct bulbs will not damage the lamp assembly
or void the lamp assembly warranty and will provide quality bulb burn
time.
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273

Function Number of bulbs Trade number
Park/turn lamps (front) 2 3157 AK (amber)
Headlamps 2 9007
Rear stop/turn/tail lamps 4 3057
Rear license plate lamps 2 168
Backup lamp 2 3156K
High-mount brake lamps 5 W5W
Side repeater 2 WY5W (amber)
Front sidemarker 2 194
Rear sidemarker 2 194
Fog lamp 2 9145
Cargo lamp 1 211-2
Interior overhead lamp 1 912 (906)
Front door courtesy
lamp1
168
Map lamps 2 168 (T10)
Ashtray lamp 1 161
All replacement bulbs are clear in color except where noted.
To replace all instrument panel lights - see your dealer.
VERTICAL AIM ADJUSTMENT
1. Park the vehicle on a level surface approximately 7.6 meters (25 feet)
from a vertical wall or screen directly in front of it.
•(1) Eight feet
•(2) Center height of lamp to ground
•(3) Twenty-five feet
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274