2003 Mercury Grand Marquis brake

Seating and Safety Restraints 105
Seating 105
Safety restraints 109
Air bags 124
Child restraints 131
Driving 142
Starting 142
Brakes 146
Traction control 149
Air suspension 151
Transmission operation 151
Vehicle loading 156
Trailer towing 157
Roadside Emergencies 161
Getting roadside assistance 161
Hazard flasher switch 162
Fuel pump shut-off switch 162
Fuses and relays 163
Changing tires 170
Jump starting 175
Wrecker towing 180
Customer Assistance 181
Reporting safety defects (U.S. only) 189
Cleaning 190
2003 Grand Marquis(grn)
Owners Guide (post-2002-fmt)
USA English(fus)
Table of Contents
2

SPECIAL NOTICES
Emission warranty
The New Vehicle Limited Warranty includes Bumper-to-Bumper
Coverage, Safety Restraint Coverage, Corrosion Coverage, and 7.3L
Power Stroke Diesel Engine Coverage. In addition, your vehicle is eligible
for Emissions Defect and Emissions Performance Warranties. For a
detailed description of what is covered and what is not covered, refer to
theWarranty Guidethat is provided to you along with your Owner’s
Guide.
Data Recording
Computers in your vehicle are capable of recording detailed data
potentially including but not limited to information such as:
•the use of restraint systems including seat belts by the driver and
passengers,
•information about the performance of various systems and modules in
the vehicle, and
•information related to engine, throttle, steering, brake or other system
status.
Any of this information could potentially include information regarding
how the driver operates the vehicle potentially including but not limited
to information regarding vehicle speed, brake or accelerator application
or steering input. This information may be stored during regular
operation or in a crash or near crash event.
This stored information may be read out and used by:
•Ford Motor Company.
•service and repair facilities.
•law enforcement or government agencies.
•others who may assert a right or obtain your consent to know such
information.
2003 Grand Marquis(grn)
Owners Guide (post-2002-fmt)
USA English(fus)
Introduction
6

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
8

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
12

High beams
Illuminates when the high beam
headlamps are turned on.
Message center indicator lights (if equipped)
Speed control
This light comes on when either the
SET/ACCEL or RESUME controls
are pressed. It turns off when the
speed control OFF control is pressed, the brake is applied or the ignition
is turned to the OFF position.
Door ajar
Illuminates when one of the doors is
not completely shut and the ignition
is turned to ON. With the ignition
ON, this light will flash six times (if
a door is open). With the ignition in
RUN position, a tone will sound for
one second (if a door is open).
Low washer fluid
Momentarily illuminates when the
ignition is turned to ON and will
stay on when the windshield washer
fluid is low.
Trunk ajar
If the trunk is not completely
closed, this light comes on when
you turn the ignition to ON. With
the ignition ON, this light will flash
five times and sound a tone for one
second, then the light remains on (if
the trunk is open).
SPEED CONTROL
CHECK
TRUNK AJAR LTR/100 kmAIR SUSPENSION
OVERDRIVE OFFDOOR
AJAR
LOW
WASHER
FLUID
km
MILES
/GAL
CHECK
TRUNK AJAR LTR/100 kmAIR SUSPENSION
OVERDRIVE OFFDOOR
AJAR
LOW
WASHER
FLUID
km
MILES
/GAL
CHECK
TRUNK AJAR LTR/100 kmAIR SUSPENSION
OVERDRIVE OFFDOOR
AJAR
LOW
WASHER
FLUID
km
MILES
/GAL
2003 Grand Marquis(grn)
Owners Guide (post-2002-fmt)
USA English(fus)
Instrument Cluster
15

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

Function Trade Number
Headlamp 9007
Park, turn and sidemarker lamp (front) 3157 AK (amber)
Cornering lamp (front) 3156K
Tail, stop, turn and sidemarker lamp (rear) 3157K
Backup lamp 3156K
License plate lamp 168
High-mount brakelamp 912
Luggage compartment lamp 212-2
Dome lamp 906
Rear reading lamp 211-2
Map lamp 168
Illuminated visor mirror 168
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 dealer.
Replacing the interior bulbs
Check the operation of all 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.
2003 Grand Marquis(grn)
Owners Guide (post-2002-fmt)
USA English(fus)
Lights
58

1. Make sure headlamp switch is in OFF position, then open the hood.
2. Remove the three pin type retainers and the radiator shield.
3. Loosen the parking lamp attachments, on the inside of the lamp, and
pull the lamp assembly forward.
4. Remove the bulb from the side turn lamp assembly.
5. Disconnect the electrical connector from the bulb and replace the
bulb.
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.
6. To install, reverse the order of the removal procedure.
Replacing tail lamp/brake/turn 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 headlamp switch is in
OFF position, then open the trunk
and remove plastic retainer to
expose the lamp assembly hardware.
2. Carefully pull the carpet away to
expose the plastic retainer.
3. Remove three nut and washer
assemblies and the lamp assembly
from the vehicle.
4. Remove the bulb socket by
rotating it counterclockwise, then
pulling it out of the lamp assembly.
2003 Grand Marquis(grn)
Owners Guide (post-2002-fmt)
USA English(fus)
Lights
60