1998 Mercury Grand Marquis turn signal bulb

Turn signal
Illuminates when the left or right
turn signal or the hazard lights are
turned on. If one or both of the
indicators stay on continuously or
flash faster, check for a burned-out
turn signal bulb. Refer toExterior bulbsin theMaintenance and care
chapter.
High beams
Illuminates when the high beam
headlamps are turned on.
Charging system
Illuminates when the ignition is
turned to the ON position and the
engine is off. The light also
illuminates when the battery is not
charging properly, requiring
electrical system service.
Engine oil pressure (if equipped)
Illuminates when the oil pressure
falls below the normal range. Stop
the vehicle as soon as safely
possible and switch off the engine
immediately. Check the oil level and
add oil if needed. Refer toEngine oilin theMaintenance and Care
chapter.
This lamp also illuminates when the ignition is turned to ON and the
engine is off.
Instrumentation
9

TURN SIGNAL CONTROL
²Push down to activate the left
turn signal.
²Push up to activate the right turn
signal.
The flash rate of the turn signal will speed up considerably if the
Lighting Control Module detects a left or right turn lamp bulb (front or
rear) is burned out.
Cornering lamps
When the turn signal is used when the headlamps are on, the cornering
lamps will light either the right or left side depending on the direction of
the turn.
WINDSHIELD WIPER/WASHER CONTROLS
Rotate the windshield wiper control
to the desired interval, low or high
speed position.
The bars of varying length are for
intermittent wipers. When in this
position rotate the control upward
for fast intervals and downward for
slow intervals.
Push the control on the end of the
stalk to activate washer. Push and
hold for a longer wash cycle. The
washer will automatically shut off
after ten seconds of continuous use.
HI
LO
F
S
OFF
HI
LO
F
S
OFF
HI
LO
F
S
OFF
Controls and features
34

EXTERIOR BULBS
Replacing exterior bulbs
Check the operation of the following lamps frequently:
²Headlamps
²Tail lamps
²Brakelamps
²High-mount brakelamp
²Turn signals
²Backup lamps
²License plate lamp
Do not remove lamp bulbs unless they will be replaced immediately. If a
bulb is removed for an extended period of time, contaminants may enter
the lamp housings and affect performance.
Replacing headlamp bulbs
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.
To remove the headlamp bulb:
1. Make sure headlamp switch is in OFF position, then open the hood.
2. Remove the sight shield by turning the three knobs to the unlock
position.
3. Disengage the safety snap on the connector by pulling upward slightly
on the clip.
4. Release clip and disconnect the
electrical connector from the bulb.
Maintenance and care
133

5. Remove the bulb retaining ring by
rotating it counterclockwise (when
viewed from the rear) about 1/8
turn to free it from the bulb socket,
and slide the ring off the plastic
base. Keep the ring to retain the
new bulb.
6. Remove the old bulb from its socket by gently pulling it straight back
out of the socket. Do not turn the bulb while removing it.
To install the new bulb:
1. With the flat side of the bulb's
plastic base facing upward, insert
the glass end of the bulb into the
socket. Turn the bulb left or right to
align the grooves in the plastic base
with the tabs in the socket. When
the grooves are aligned, push the
bulb into the socket until the plastic base contacts the rear of the socket.
2. Install the bulb retaining ring over the plastic base until it contacts the
rear of the socket by rotating it clockwise until you feel a ªstop.º
3. Connect the electrical connector into the rear of the plastic base until
it snaps, locking it into position.
4. 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.
Replacing parking lamp/turn signal bulbs
1. Make sure the headlamp control is in the OFF position.
2. Open the hood.
Maintenance and care
134

3. Disconnect the electrical
connector from the bulb socket.
4. Rotate the bulb socket
counterclockwise about ò turn and
remove.
5. Without turning, carefully pull out
the bulb.
6. Insert the new bulb into the parking lamp assembly. When the grooves
in the plastic base are aligned, push the bulb into the lamp assembly
until the plastic base contacts the rear of the lamp assembly.
7. To complete installation of the parking lamp/turn signal assembly,
follow the removal procedures in reverse order.
Replacing tail lamp/backup bulbs
For bulb replacement, see a dealer or qualified technician.
Replacing sidemarker and cornering lamp bulbs
For bulb replacement, see a dealer or qualified technician.
High-mount brakelamp
For bulb replacement, see a dealer or qualified technician.
Replacing license plate lamp bulbs
For bulb replacement, see a dealer or qualified technician.
AIMING THE HEADLAMPS
The alignment of your headlamps should be checked by a qualified
service technician if:
1. Oncoming motorists frequently signal you to deactivate your high
beams, and your high beams are not activated.
2. The headlamps do not seem to provide enough light for clear night
vision.
3. The headlamp beams are pointed substantially away from a slightly
down and to the right position.
Maintenance and care
135