2003 Mercury Grand Marquis service

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

Light remains on:
Temporary malfunctions may cause your light to illuminate. Examples
are:
1. The vehicle has run out of fuel.
2. Poor fuel quality or water in the fuel.
3. The fuel cap may not have been properly installed and securely
tightened.
These temporary malfunctions can be corrected by filling the fuel tank
with high quality fuel of the recommended octane and/or properly
installing and securely tightening the fuel cap. After three driving cycles
without these or any other temporary malfunctions present, the light
should turn off. (A driving cycle consists of a cold engine startup
followed by mixed city/highway driving.) No additional vehicle service is
required.
If the light remains on, have your vehicle serviced at the first available
opportunity.
Light is blinking:
Engine misfire is occurring which could damage your catalytic converter.
You should drive in a moderate fashion (avoid heavy acceleration and
deceleration) and have your vehicle serviced at the first available
opportunity.
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.
Check fuel cap
Illuminates when the fuel cap is not
installed correctly. Check the fuel
cap for proper installation. When
the fuel filler cap is properly
re-installed, the light(s) will turn off
after a period of normal driving. Continuing to operate the vehicle with
the check fuel cap light on, or a mis-installed fuel cap can activate the
Service Engine Soon/Check Enginewarning light.
It may take a long period of time for the system to detect an
improperly installed fuel filler cap.
For more information, refer toFuel filler capin theMaintenance and
specificationschapter.
CHECK
FUEL
CAP
2003 Grand Marquis(grn)
Owners Guide (post-2002-fmt)
USA English(fus)
Instrument Cluster
11

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

Safety belt
Illuminates to remind you to fasten
your safety belts. For more
information, refer to theSeating
and safety restraintschapter.
Air bag readiness
Illuminates to confirm that the air
bags (front or side) are operational.
If the light fails to illuminate,
continues to flash or remains on,
have the system serviced immediately.
Charging system
Illuminates when the battery is not
charging properly.
Engine oil pressure (if equipped)
Illuminates when the oil pressure
falls below the normal range. Check
the oil level and add oil if needed.
Refer toEngine oilin the
Maintenance and specificationschapter.
Traction ControlAdvancTrac active (if equipped)
Illuminates when the Traction
Control
system is active. It will be
lit for a minimum of four seconds or
for the duration of the Traction
Control
event.
For more information, refer to the
Drivingchapter.
AIR
BAG
2003 Grand Marquis(grn)
Owners Guide (post-2002-fmt)
USA English(fus)
Instrument Cluster
13

Air suspension (if equipped)
•Standard instrument cluster
•Optional instrument cluster
Illuminates when the air suspension
switch 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
•Standard instrument cluster
•Optional instrument cluster
Illuminates when the overdrive
function has been turned OFF using
the transmission control switch
(TCS). If the light does not come on
or the light flashes steadily, have
your vehicle serviced as soon as
possible, damage to the transmission could occur.
Turn signals
Illuminates when the turn signals or
the hazard lights are turned on. If
the lights stay on continuously or
flash faster, check for a burned-out bulb.
AIR
SUSP
CHECK
TRUNK AJAR LTR/100 kmAIR SUSPENSION
OVERDRIVE OFFDOOR
AJAR
LOW
WASHER
FLUID
km
MILES
/GAL
LOW
FUEL
O/D
OFF
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
14

•Optional instrument cluster
This gauge indicates the temperature of the engine coolant, not the
coolant level. If the coolant is not at its proper level the gauge indication
will not be accurate. If the gauge enters the red section, the engine
coolant andCheck Engine/Service Engine Soonindicators illuminate,
refer toWhat you should know about fail-safe coolingin the
Maintenance and specificationschapter.
Engine oil pressure gauge (if equipped)
Indicates engine oil pressure. At
normal operating temperature, the
needle will be in the normal range
(the area between the “L” and “H”);
if the needle goes below the normal
range, stop the vehicle as soon as
safely possible and switch off the
engine immediately. Check the oil
level. Add oil if needed (refer to
Engine oilin theMaintenance
and specificationschapter). If the
oil level is correct, have your vehicle checked at your dealership or by a
qualified technician.
N
O
R
M
H
C
OILH
L
2003 Grand Marquis(grn)
Owners Guide (post-2002-fmt)
USA English(fus)
Instrument Cluster
18

RADIO RECEPTION FACTORS
Three factors can affect radio reception:
•Distance/strength.The further an FM signal travels, the weaker it is.
The listenable range of the average FM station is approximately 40 km
(24 miles). This range can be affected by “signal modulation.” Signal
modulation is a process radio stations use to increase their
strength/volume relative to other stations.
•Terrain.Hills, mountains and tall buildings between your vehicle’s
antenna and the radio station signal can cause FM reception problems.
Static can be caused on AM stations by power lines, electric fences,
traffic lights and thunderstorms. Moving away from an interfering
structure (out of its “shadow”) returns your reception to normal.
•Station overload.Weak signals are sometimes captured by stronger
signals when you pass a broadcast tower. A stronger signal may
temporarily overtake a weaker signal and play while the weak station
frequency is displayed.
The audio system automatically switches to single channel reception if it
will improve the reception of a station normally received in stereo.
AUDIO SYSTEM WARRANTIES AND SERVICE
Refer to theWarranty Guidefor audio system warranty information.
If service is necessary, see your dealer or a qualified technician.
2003 Grand Marquis(grn)
Owners Guide (post-2002-fmt)
USA English(fus)
Entertainment Systems
45

High beams
Push the lever toward the
instrument panel to activate. Pull
the lever towards you to deactivate.
Flash to pass
Pull toward you slightly to activate
and release to deactivate.
PANEL DIMMER CONTROL
Use to adjust the brightness of the
instrument panel during headlight
and parklamp 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.
Domelamp Control
The panel dimmer control also controls the domelamp operation.
•Rotate the thumbwheel fully to the right, past detent to activate the
domelamp.
•In order to turn off the domelamp, 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 a qualified service technician.
2003 Grand Marquis(grn)
Owners Guide (post-2002-fmt)
USA English(fus)
Lights
54