2008 Mercury Grand Marquis bulb

Introduction 4
Instrument Cluster 10
Warning lights and chimes 10
Gauges 15
Entertainment Systems 18
AM/FM stereo 18
AM/FM stereo with CD 20
AM/FM stereo cassette with CD 23
AM/FM stereo with in-dash six CD 28
Climate Controls 34
Manual heating and air conditioning 34
Automatic temperature control 35
Rear window defroster 37
Lights 38
Headlamps 38
Turn signal control 42
Bulb replacement 44
Driver Controls 50
Windshield wiper/washer control 50
Steering wheel adjustment 51
Power windows 62
Mirrors 63
Speed control 65
Moon roof 69
Message center 74
Locks and Security 84
Keys 84
Locks 84
Anti-theft system 92
Table of Contents
1
2008 Grand Marquis(grn)
Owners Guide (post-2002-fmt)
USA(fus)

WARNING LIGHTS AND CHIMES
Standard instrument cluster
Optional instrument cluster
Warning lights and gauges can alert you to a vehicle condition that may
become serious enough to cause expensive repairs. A warning light may
illuminate when a problem exists with one of your vehicle’s functions.
Many lights will illuminate when you start your vehicle to make sure the
bulb works. If any light remains on after starting the vehicle, refer to the
respective system warning light for additional information.
2008 Grand Marquis(grn)
Owners Guide (post-2002-fmt)
USA(fus)
Instrument Cluster
10

Service Engine Soon:TheService
Engine Soonindicator light
illuminates when the ignition is first
turned to the ON position to check
the bulb and to indicate whether the vehicle is ready for
Inspection/Maintenance (I/M) testing. Normally, the
Service engine soon

light will stay on until the engine is cranked, then turn itself off if no
malfunctions are present. However, if after 15 seconds the
Service
engine soon
light blinks eight times, it means that the vehicle is not
ready for I/M testing. See theReadiness for Inspection/Maintenance
(I/M) testingin theMaintenance and Specificationschapter.
Solid illumination after the engine is started indicates the On Board
Diagnostics System (OBD-II) has detected a malfunction. Refer toOn
board diagnostics (OBD-II)in theMaintenance and Specifications
chapter. If the light is blinking, engine misfire is occurring which could
damage your catalytic converter. Drive in a moderate fashion (avoid
heavy acceleration and deceleration) and have your vehicle serviced
immediately by your authorized dealer.
Under engine misfire conditions, excessive exhaust temperatures
could damage the catalytic converter, the fuel system, interior
floor coverings or other vehicle components, possibly causing a fire.
Powertrain malfunction
indicator (if equipped):
Illuminates when a powertrain fault
has been detected. Contact your
authorized dealer as soon as possible.
Check fuel cap (if equipped):
Illuminates when the fuel cap may
not be properly installed. Continued
driving with this light on may cause
the Service engine soon warning
light to come on. Refer toFuel
filler capin theMaintenance and Specificationschapter.
2008 Grand Marquis(grn)
Owners Guide (post-2002-fmt)
USA(fus)
Instrument Cluster
11

illuminate for 3 seconds to ensure the bulb is working. If the light does
not turn ON, have the system inspected by your authorized dealer. For
more information on this system, refer toTire Pressure Monitoring
Systemin theTires, Wheels and Loadingchapter.
Air suspension (if equipped):
Illuminates when the air suspension
is turned OFF, the load limit is
exceeded or the air suspension
system requires servicing.
Low fuel (if equipped):
Illuminates when the fuel level in
the fuel tank is at or near empty
(refer toFuel gaugein this chapter
for more information).
O/D off:Illuminates when the
overdrive function of the
transmission has been turned OFF,
refer to theDrivingchapter. If the
light does not illuminate, have the transmission serviced soon, or damage
may occur.
Speed control (if equipped):
Illuminates when the speed control
is activated. Turns off when the
speed control system is deactivated.
Door ajar (if equipped):
Illuminates when one of the doors is
not completely shut and the ignition
is turned to ON. With the ignition in
RUN position, a tone will sound for one second (if a door is open).
Turn signal:Illuminates when the
left or right turn signal or the
hazard lights are turned on. If the
indicators stay on or flash faster, check for a burned out bulb.
High beams:Illuminates when the
high beam headlamps are turned on.
O/D
OFF
2008 Grand Marquis(grn)
Owners Guide (post-2002-fmt)
USA(fus)
Instrument Cluster
14

•(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.
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. Usinga4mm
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. HORIZONTAL AIM IS NOT REQUIRED FOR THIS VEHICLE AND IS
NON-ADJUSTABLE.
7. Close the hood and turn off the lamps.
2008 Grand Marquis(grn)
Owners Guide (post-2002-fmt)
USA(fus)
Lights
41

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.
Cornering lamps
When the turn signal is used and the headlamps are on, the cornering
lamps will light either the right or left side depending on the direction of
the turn.
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.
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.
2008 Grand Marquis(grn)
Owners Guide (post-2002-fmt)
USA(fus)
Lights
42

BULB REPLACEMENT
Headlamp Condensation
The headlamps are vented to equalize pressure. When moist air enters
the headlamp(s) through the vents, there is a possibility that
condensation can occur. This condensation is normal and will clear
within 45 minutes of headlamp operation.
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 H13
Park, turn and sidemarker lamp (front) 3157 AK (amber)
Cornering lamp (front) 3156K
Tail, stop, turn and sidemarker lamp (rear) 3157K
Backup lamp 3156K
Foglamp 9145
License plate lamp 168
High-mount brakelamp 912
Luggage compartment lamp 212-2
Rear reading lamp 578
Map lamp 906
Visor vanity lamp - Slide on Rail system
(SOR)37
Dual floorwell lamp 906
Glove compartment 168
All replacement bulbs are clear in color except where noted.
To replace all instrument panel lights - see your authorized dealer.
Replacing the interior bulbs
Check the operation of all bulbs frequently.
2008 Grand Marquis(grn)
Owners Guide (post-2002-fmt)
USA(fus)
Lights
44

Overhead console lamps
To remove and replace the lamps in the overhead console:
1. Make sure the headlamp switch is
in the OFF position and remove the
overhead console from the headliner
by pulling it straight down.
2. Remove the bulb socket from the
back of the lamp housing by pulling
it straight out.
3. Remove the bulb from the socket
by pulling straight out.
Install the new bulb in reverse order.
Replacing exterior bulbs
Check the operation of all the bulbs frequently.
Replacing headlamp bulbs
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 toReplacing front
parking/cornering/turn signal lampin this section.
4. Remove the headlamp retainer
bolts and the headlamp assembly.
5. Disconnect the electrical
connector.
2008 Grand Marquis(grn)
Owners Guide (post-2002-fmt)
USA(fus)
Lights
45