Page 1 of 248
Introduction 4
Instrument Cluster 10
Warning and control lights 10
Gauges 16
Entertainment Systems 22
AM/FM stereo cassette with CD 22
AM/FM stereo cassette (CD changer compatible) 31
CD changer 40
Climate Controls 46
Manual heating and air conditioning 46
Electronic automatic temperature control 48
Lights 53
Headlamps 53
Turn signal control 56
Bulb replacement 57
Driver Controls 63
Windshield wiper/washer control 63
Steering wheel adjustment 64
Power windows 74
Mirrors 75
Speed control 77
Message center 86
Locks and Security 92
Keys 92
Locks 92
Anti-theft system 94
2003 Grand Marquis(grn)
Owners Guide (post-2002-fmt)
USA English(fus)
Table of Contents
Table of Contents
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Page 8 of 248
These are some of the symbols you may see on your vehicle.
Vehicle Symbol Glossary
Safety Alert
See Owner’s Guide
Fasten Safety BeltAir Bag-Front
Air Bag-SideChild Seat
Child Seat Installation
WarningChild Seat Lower
Anchor
Child Seat Tether
AnchorBrake System
Anti-Lock Brake SystemBrake Fluid -
Non-Petroleum Based
Traction ControlAdvanceTrac
Master Lighting SwitchHazard Warning Flasher
Fog Lamps-FrontFuse Compartment
Fuel Pump ResetWindshield Wash/Wipe
Windshield
Defrost/DemistRear Window
Defrost/Demist
2003 Grand Marquis(grn)
Owners Guide (post-2002-fmt)
USA English(fus)
Introduction
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Page 9 of 248
Vehicle Symbol Glossary
Power Windows
Front/Rear
Power Window Lockout
Child Safety Door
Lock/UnlockInterior Luggage
Compartment Release
Symbol
Panic AlarmEngine Oil
Engine CoolantEngine Coolant
Temperature
Do Not Open When HotBattery
Avoid Smoking, Flames,
or SparksBattery Acid
Explosive GasFan Warning
Power Steering FluidMaintain Correct Fluid
LevelMAX
MIN
Emission SystemEngine Air Filter
Passenger Compartment
Air FilterJack
Check fuel capLow tire warning
2003 Grand Marquis(grn)
Owners Guide (post-2002-fmt)
USA English(fus)
Introduction
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Page 12 of 248

Brake system warning
•Standard instrument cluster
•Optional instrument cluster
To confirm the brake system
warning light is functional, it will
momentarily illuminate when the
ignition is turned to the ON position (alternatively for some vehicles
when the ignition is moved from the ON position to START position, the
light will momentarily illuminate prior to reaching the START position).
It also illuminates if the parking brake is engaged. If the brake system
warning light does not illuminate as described, seek service immediately.
Illumination after the parking brake is released indicates low brake fluid
level or a brake system malfunction and the brake system should be
serviced immediately by a qualified technician. Refer toBrakesin the
Drivingchapter for more information.
Anti-lock brake system (ABS)
To confirm the anti-lock brake
system (ABS) warning light is
functional it will momentarily
illuminate when the ignition is
turned to the ON position
(alternatively for some vehicles when the ignition is moved from the ON
position to the START position, the light will momentarily illuminate just
prior to reaching the START position). If the light remains on, continues
to flash or fails to illuminate, have the ABS serviced immediately. If the
ABS light remains on, it means the anti-lock brake system has
malfunctioned and is disabled, however, the normal brake system will
still function unless the brake warning light also remains illuminated and
parking brake is off. Refer toBrakesin theDrivingchapter for more
information.
!
BRAKE
ABS
2003 Grand Marquis(grn)
Owners Guide (post-2002-fmt)
USA English(fus)
Instrument Cluster
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Page 27 of 248

Setting the clock with radio data system (RDS) feature
Press the RDS control until SELECT
HOUR or SELECT MINS is
displayed.
Use the SEL control to manually set
the time.
•
to decrease hours/minutes
and
•
to increase hours/minutes.
Tune adjust
The tune control works in radio mode.
Tune adjust in radio mode
•Press
to move to the next
frequency down the band
(whether or not a listenable
station is located there). Hold the
control to move through the
frequencies quickly.
•Press
to move to the next frequency up the band (whether or not
a listenable station is located there). Hold for quick movement.
Tape/CD select
•To begin tape play (with a tape
loaded into the audio system)
while in the radio or CD mode,
press the TAPE control. Press the
button during rewind or fast forward to stop the rewind or fast
forward function.
•To begin CD play (if CD is
loaded), press the CD control.
The first track of the disc will
begin playing. If returning from
radio or tape mode, CD play will begin where it stopped last.
2003 Grand Marquis(grn)
Owners Guide (post-2002-fmt)
USA English(fus)
Entertainment Systems
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Setting the clock with radio data system (RDS) feature
Press the RDS control until SELECT
HOUR or SELECT MINS is
displayed.
Use the SEL control to manually set
the time.
•Press
to increase
hours/minutes.
•Press
to decrease
hours/minutes.
Tune adjust
The tune control works in radio or CD mode (if equipped).
Tune adjust in radio mode
•Press
to move to the next
frequency down the band
(whether or not a listenable
station is located there). Hold the control to move through the
frequencies quickly.
•Press
to move to the next frequency up the band (whether or not
a listenable station is located there). Hold for quick movement.
Tune adjust for CD changer
•Press
to select the previous
disc in the CD changer. (Play will
begin on the first track of the
disc unless the CD changer is in shuffle mode.) Refer toShuffle
featurefor more information. Hold the control to continue reversing
through the discs.
•Press
to select the next disc in the CD changer. Hold the control
to fast-forward through the remaining discs.
Tape/CD select
•To begin tape play (with a tape
loaded into the audio system)
while in the radio or CD mode,
press the TAPE control. Press the
button during rewind or fast forward to stop the rewind or fast
forward function.
RDS
SEL
TUNE
TUNE
CD TAPE
2003 Grand Marquis(grn)
Owners Guide (post-2002-fmt)
USA English(fus)
Entertainment Systems
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Page 42 of 248
If you pull too hard on the disc holder, the disc holder may come
completely out of the magazine. If this happens, reinsert the disc holder
back into the magazine while pressing on the lever (A).
5. Line up the CD with the groove
of the disc holder. Ensure that the
label on the CD faces downwards.
6. Press in on the disc holder until it
locks securely into the magazine. If
the disc holders are not fully locked
into the magazine, the unit will not
operate.
Ensure that the disc holder is
evenly inserted and at the same
level as the magazine (A). The unit
will not operate if the disc holder is
not inserted at the same level (B).
A
A
B
2003 Grand Marquis(grn)
Owners Guide (post-2002-fmt)
USA English(fus)
Entertainment Systems
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Page 53 of 248

HEADLAMP CONTROL
Turns the lamps off.
Turns on the parking
lamps, instrument panel lamps,
license plate lamps and tail lamps.
Turns the headlamps on.
Autolamp control
The autolamp system provides light
sensitive automatic on-off control of
the exterior lights normally
controlled by the headlamp control.
The autolamp system also keeps the
lights on for a predetermined period
of time after the ignition switch is
turned to OFF.
•To turn autolamps on, rotate the
control counterclockwise to the
next position from OFF.
•To turn autolamps off, rotate the control clockwise past OFF to the
parking lamp position
, then back to OFF.
The headlamps will also turn on when the windshield wipers are
activated, after a 10–20 second delay.
Daytime running lamps (DRL) (if equipped)
Turns the lowbeam headlamps on with a reduced output. To activate:
•the key must be in the ON position,
•the parking brake released, and
•the headlamp control is in the OFF or Parking lamps position.
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.
2003 Grand Marquis(grn)
Owners Guide (post-2002-fmt)
USA English(fus)
Lights
Lights
53