Mercury Grand Marquis (2011 year). Manual — part 4

WARNING: Always remember to turn on your headlamps at
dusk or during inclement weather. The Daytime Running Light

(DRL) System does not activate your tail lamps and generally may not
provide adequate lighting during these conditions. Failure to activate
your headlamps under these conditions may result in a collision.

PANEL DIMMER CONTROL

Use to adjust the brightness of the
instrument panel during headlamp
and parking lamp operation.
• Rotate the thumbwheel from left

to right to brighten the
instrument panel.

• Rotate the thumbwheel from right

to left to dim the instrument
panel.

Dome lamp control

The panel dimmer control also controls the dome lamp operation.
• Rotate the thumbwheel fully to the right, past detent, to activate the

dome lamp.

• In order to turn off the dome lamp, rotate the thumbwheel to the left.

AIMING THE HEADLAMPS

The headlamps on your vehicle are properly aimed at the assembly plant.
If your vehicle has been in an accident, the alignment of your headlamps
should be checked by your authorized dealer.

Headlamp aim adjustment (Crown Victoria only)

The headlamps are designed to be mechanically aimed, but can also be
aimed visually by doing the following:

1. Park the vehicle directly in front of a wall or screen on a level surface,
approximately 25 feet (7.6 meters) away. Check your headlamp
alignment at night or in a dark area so that you can see the headlamp
beam pattern.

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• (1) 8 feet (2.4 meters)
• (2) Center height of lamp to

ground

• (3) 25 feet (7.6 meters)
• (4) Horizontal reference line
• (5) Center of headlamps
• (6) Center line of the vehicle
2. The center of the headlamp is
marked either on the lens (a circle
or cross marker) or on the bulb shield, internal to the lamp (mark or
feature). Measure the height from the center of your headlamp to the
ground (2) and mark an 8 foot (2.4 meter) long horizontal line on the
wall or screen (1) at this height (masking tape works well).

3. Turn on the low beam headlamps
and open the hood.

4. Locate the high intensity area of
the beam pattern and place the top
edge of the intensity zone even with
the horizontal reference line (4). If
the top edge of the high intensity
area is not even with the horizontal
line, follow the next step to adjust
it.

5. Locate the vertical adjuster for
each headlamp. Adjust the aim by
turning the adjuster control either
clockwise (to adjust down) or
counterclockwise (to adjust up).

6. In addition to the horizontal line
marked in step 2, a pair of vertical
lines (5) must be marked at the
center line of the headlamps on the
wall or screen.

7. On the wall or screen, locate the
high intensity area of the beam pattern. The left edge of the high
intensity area should be even with the vertical line corresponding to the
headlamp under adjustment. If the left edge of the high intensity area is
not even with the vertical line, follow the next step to adjust it.

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8. Locate the horizontal adjuster for
each headlamp. Turn it clockwise or
counterclockwise and place the left
edge of the high intensity area even
with the vertical line corresponding
to the headlamp under adjustment.

Vertical aim adjustment (Grand Marquis only)

1. Park the vehicle directly in front of a wall or screen on a level surface,
approximately 25 feet (7.6 meters) away. Check your headlamp
alignment at night or in a dark area so that you can see the headlamp
beam pattern.
• (1) 8 feet (2.4 meters)
• (2) Center height of lamp to

ground

• (3) 25 feet (7.6 meters)
• (4) Horizontal reference line
2. Measure the height of the
headlamp bulb center from the
ground and mark an 8 foot
(2.4 meter) horizontal reference line
on the vertical wall or screen at this
height (a piece of masking tape works well).

3. Turn on the low beam headlamps to illuminate the wall or screen and
open the hood.

4. On the wall or screen you will
observe an area of high intensity
light. The top of the high intensity
area should touch the horizontal
reference line, if not, the beam will
need to be adjusted.

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To see a clearer light pattern for
adjusting, you may want to block
the light from one headlamp while
adjusting the other.

5. Locate the vertical adjuster on
each headlamp. Using a 4 mm
wrench, turn the adjuster either
clockwise (to adjust down) or
counterclockwise (to adjust up).
The horizontal edge of the brighter
light should touch the horizontal
reference line.

6. Close the hood and turn off the lamps.

HORIZONTAL AIM IS NOT REQUIRED FOR THIS VEHICLE AND IS
NON-ADJUSTABLE.

TURN SIGNAL CONTROL
• Push down to activate the left

turn signal.

• Push up to activate the right turn

signal.

The flash rate of the turn signal will speed up considerably if the left or
right turn lamp bulb (front or rear) is burned out.

INTERIOR LAMPS

Map/courtesy lamps

The courtesy lamps light when:
• any door is opened.
• the instrument panel dimmer

switch is rotated past the detent.

• the unlock control of the remote

entry controls is pressed and the
ignition is off.

The reading lamps can be turned on
by pressing the rocker controls next
to each lamp.

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If equipped with remote keyless entry, the courtesy lamp will illuminate
whenever any door is opened and will remain on for 25 seconds after the
door is shut or when the ignition is turned to the on position.

Rear courtesy/reading lamps (if equipped)

Rotate the lens to illuminate the
lamp. With the lens in the flat
position, the courtesy lamp lights
when:
• any door is opened.
• the panel dimmer thumbwheel is

rotated fully to the right, past
detent.

BULB REPLACEMENT

Lamp assembly condensation

Exterior lamps are vented to accommodate normal changes in pressure.
Condensation can be a natural by-product of this design. When moist air
enters the lamp assembly through the vents, there is a possibility that
condensation can occur when the temperature is cold. When normal
condensation occurs, a thin film of mist can form on the interior of the
lens. The thin mist eventually clears and exits through the vents during
normal operation. Clearing time may take as long as 48 hours under dry
weather conditions.

Examples of acceptable condensation are:
• Presence of thin mist (no streaks, drip marks or droplets)
• Fine mist covers less than 50% of the lens
Examples of unacceptable moisture (usually caused by a lamp water
leak) are:
• Water puddle inside the lamp
• Large water droplets, drip marks or streaks present on the interior of

the lens

Take your vehicle to a dealer for service if any of the above conditions of
unacceptable moisture are present.

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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 ensure 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.

Function

Trade Number

*Headlamp

9007

*Park lamp and turn lamp (front)

3457 AK (amber)

*Side marker (front)

194 AK (amber)

*Tail, stop, turn (rear)

3157K

*Side marker (rear)

194

**Headlamp

H13

**Park, turn and sidemarker lamp (front)

3157 AK (amber)

**Cornering lamp (front)

3156K

**Tail, stop turn and sidemarker lamp (rear)

3157K

**Fog lamp

9145

Backup lamp

3156K

License plate lamp

168

High-mount brakelamp

912

Luggage compartment lamp

212-2

Rear reading lamp

578

Map lamp

906

Dual floorwell lamp

906

Glove compartment

168

Visor vanity lamp - Slide on Rail system
(SOR)

A6224PF

All replacement bulbs are clear in color except where noted.

To replace all instrument panel lights - see your authorized dealer.

*Crown Victoria only

**Grand Marquis only

Replacing interior bulbs

Check the operation of all bulbs frequently.

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Replacing exterior bulbs

Check the operation of all bulbs frequently.

Replacing headlamp bulbs (Crown Victoria only)

To remove the headlamp bulb:

1. Make sure the headlamp switch is in the off position, then open the
hood.

2. Remove the radiator cover by turning the three retainers to the unlock
position.

3. Remove the two retainers and
pull headlamp assembly forward to
expose bulb.

4. Disconnect the electrical
connector from the bulb by pulling
rearward.

5. Remove the bulb retaining ring by
rotating it counterclockwise (when
viewed from the rear) to free it
from the bulb socket, and slide the
ring off the plastic base. Keep the
ring to retain the new bulb.

6. Without turning, remove the old
bulb from the lamp assembly by
gently pulling it straight back out of
the lamp assembly.

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To install the new bulb:

WARNING: 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.

Note: If the bulb is accidentally touched, it should be cleaned with
rubbing alcohol before being used.

1. With the flat side of the new bulb’s plastic base facing upward, insert
the glass end of the bulb into the lamp assembly. Turn the bulb left or
right to align the grooves in the plastic base with the tabs in the lamp
assembly. When the grooves are aligned, push the bulb into the lamp
assembly until the plastic base contacts the rear of the lamp assembly.

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 “stop.”

3. Connect the electrical connector into the rear of the plastic base until
it snaps, locking it into position.

4. Install the headlamp assembly with two retainers.

5. Install the radiator cover locking it in place with three retainers.

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.

Replacing front parking/turn signal lamp bulbs

To remove the front parking/turn signal lamp bulbs:

1. Make sure headlamp switch is in the off position, then open the hood.

2. Remove the radiator cover by turning the three retainers to the unlock
position.

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3. Remove two retainers and pull
headlamp assembly forward to
expose bulb.

4. Remove the bulb socket by
rotating it counterclockwise, then
pulling it out of the lamp assembly.

5. Pull the bulb from the socket and
push in the new bulb.

6. Install the bulb socket into the
lamp assembly by rotating it
clockwise.

To complete installation, follow the
removal procedure in reverse order.

Replacing front sidemarker bulb

To remove the front side marker bulb:

1. Make sure headlamp switch is in the off position, then open the hood.

2. Remove the radiator cover by turning the three retainers to the unlock
position.

3. Remove the screw from the
outside of the lamp.

4. Remove the nut from inside the
lamp and pull the lamp assembly
away from the vehicle.

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5. Rotate the bulb socket
counterclockwise and remove from
lamp assembly.

6. Carefully pull bulb straight out of
the socket and push in the new bulb
until it snaps, locking it into
position.

7. To complete installation, follow
the removal procedure in reverse
order.

Replacing tail/brake/turn signal lamp bulbs

The tail lamp and brake/turn signal lamp bulbs are located in the tail
lamp assembly. Follow the same steps to replace either bulb.

1. Make sure the headlamp switch is
in the off position, then open the
trunk and remove the retainer.

2. Carefully pull the carpet away to
expose the lamp assembly hardware.

3. Remove three nuts and the lamp
assembly from the vehicle.

4. Remove the bulb socket by
rotating it counterclockwise, then
pulling it out of the lamp assembly.

5. Pull the bulb from the socket and
push in the new bulb.

6. Install the bulb socket into the
lamp assembly by rotating it
clockwise.

7. Install the lamp assembly on the
vehicle with three nuts ensuring the
nuts are flush with the body to
prevent water from entering the trunk.

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8. Carefully push the carpet back in to place and install the retainer.

Replacing license plate lamp bulbs

1. Make sure headlamp switch is in
the off position, then remove two
screws, grommets and the license
plate lamp assembly from the trunk
lid.

2. Carefully pull the bulb from the
socket and push in the new bulb.

3. Install the lamp assembly on
trunk lid with two grommets,
ensuring the grommets are pushed
all the way into the trunk lid and secure with two screws.

Replacing backup lamp bulbs

1. Open trunk and remove bulb
socket from the trunk lid by turning
counterclockwise.

2. Pull the bulb straight out of the
socket and push in the new bulb.

3. Install the bulb socket in trunk lid
by turning clockwise.

Replacing high-mount brakelamp bulbs

1. Remove two screws from the
lamp assembly.

2. Carefully lift the lamp assembly
up for access to the bulbs.

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3. Carefully pull the bulb socket out
of the lamp assembly.

4. Pull the bulb straight out of the
socket and push in the new bulb.

To install, reverse the removal
procedure.

Replacing headlamp bulbs (Grand Marquis only)

To remove the headlamp bulb:

1. Make sure the headlamp control is in the off position, then open the
hood.

2. Remove the three pin type retainers and the radiator sight shield.

3. Remove the front parking lamp assembly. Refer to Replacing front
parking/cornering/turn signal lamp bulbs in this section.

4. Remove the headlamp retainer
bolts and the headlamp assembly.

5. Disconnect the electrical
connector.

6. Remove the old headlamp bulb by
rotating it counterclockwise, then
pull it out.

7. To install, reverse the removal
procedure. (Re-aiming the
headlamps may be necessary. For
additional information, refer to the
headlamp aiming section in this
chapter.)

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WARNING: 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.

Note: If the bulb is accidentally touched, it should be cleaned with
rubbing alcohol before being used.

Note: The headlamp bulb should not be removed from the headlamp
until just before a replacement bulb is installed. Removing the bulb for
an extended period of time may affect headlamp bulb performance.
Contaminants may enter the headlamp where they can settle on the lens
and reflector. Never turn the headlamps on with the bulb removed.

Replacing front parking/cornering/turn signal lamp bulbs

To remove the parking/cornering/turn signal lamp bulbs:

1. Make sure the headlamp switch is in the off position, then open the
hood.

2. Remove the three pin type retainers and the radiator shield.

3. Remove two nuts from the back
side of the lamp assembly, then pull
the lamp assembly away from the
vehicle.

4. Rotate the bulb socket
counterclockwise and remove it
from the lamp assembly.

5. Carefully pull bulb straight out of
the socket and push in the new
bulb.

6. To install, reverse the order of
the removal procedure.

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Note: The parking lamp/turn signal bulbs should not be removed from
the lamp until just before a replacement bulb is installed. Removing the
bulb for an extended period of time may affect headlamp bulb
performance. Contaminants may enter the headlamp where they can
settle on the lens and reflector. Never turn the lamps on with the bulb
removed.

Replacing tail/brake/turn signal lamp bulbs

The tail lamp, the brake lamp and the turn signal lamp bulbs are located
in the tail lamp assembly. Follow the same steps to replace either bulb.

1. Make sure the headlamp switch is
in the off position, then open the
trunk, remove pin-type retainer and
carefully pull the carpet away to
expose the lamp assembly hardware.

2. Remove the three nuts and the
lamp assembly from the vehicle.

3. Remove the bulb socket by
rotating it counterclockwise, then
pulling it out of the lamp assembly.

4. Pull the bulb from the socket and
push in the new bulb.

5. Install the bulb socket into the
lamp assembly by rotating it
clockwise.

6. Install the lamp assembly on the
vehicle with three nuts, ensuring the
nuts are flush with the body to
prevent water from entering the trunk.

7. Carefully push the carpet back in to place and install the pin-type
retainer.

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Replacing license plate lamp bulbs

1. Make sure the headlamp switch is
in the off position, then remove two
screws, grommets and the license
plate lamp assembly from the trunk
lid.

2. Carefully pull the bulb from the
socket and push in the new bulb.

3. Install the lamp assembly on the
trunk lid with two grommets,
ensuring that the grommets are
pushed all the way in to the trunk lid and secured with two screws.

Replacing backup lamp bulbs

1. Open the trunk, then remove the
bulb socket from the trunk lid by
turning it counterclockwise.

2. Pull the bulb straight out of the
socket and push in the new bulb.

3. Install the bulb socket in trunk lid
by turning clockwise.

Replacing high-mount brakelamp bulbs

1. Remove two screws from the
lamp assembly.

2. Carefully lift the lamp assembly
up for access to the bulbs.

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3. Carefully pull the bulb socket out
of the lamp assembly.

4. Pull the bulb straight out of the
socket and push in the new bulb.

To install, reverse the removal
procedure.

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