Page 1 of 256
Introduction 4
Instrument Cluster 10
Warning and control lights 10
Gauges 15
Entertainment Systems 20
AM/FM stereo with CD 20
AM/FM stereo cassette with CD 23
AM/FM stereo with cassette and 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 41
Bulb replacement 43
Driver Controls 49
Windshield wiper/washer control 49
Steering wheel adjustment 50
Power windows 61
Mirrors 62
Speed control 63
Message center 72
Locks and Security 78
Keys 78
Locks 78
Anti-theft system 86
Table of Contents
1
2005 Grand Marquis(grn)
Owners Guide (post-2002-fmt)
USA(fus)
Page 8 of 256
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
Powertrain MalfunctionSpeed Control
Master Lighting SwitchHazard Warning Flasher
Fog Lamps-FrontFuse Compartment
Fuel Pump ResetWindshield Wash/Wipe
Windshield
Defrost/DemistRear Window
Defrost/Demist
2005 Grand Marquis(grn)
Owners Guide (post-2002-fmt)
USA(fus)
Introduction
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Page 9 of 256
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
2005 Grand Marquis(grn)
Owners Guide (post-2002-fmt)
USA(fus)
Introduction
9
Page 34 of 256

MANUAL HEATING AND AIR CONDITIONING SYSTEM
(IF EQUIPPED)
1.Fan speed adjustment:Controls
the volume of air circulated in the
vehicle.
2.Temperature selection:
Controls the temperature of the
airflow in the vehicle.
3.Air flow selections:Controls the direction of the airflow in the
vehicle. See the following for a brief description on each control.
MAX A/C:Uses recirculated air to cool the vehicle. Air flows from the
instrument panel vents only. This mode will help prevent unpleasant
odors from entering the vehicle.
NORM A/C:Uses outside air to cool the vehicle. Air flows from the
instrument panel vents only.
VENT: Distributes outside air through the instrument panel vents.
OFF: Outside air is shut out and the fan will not operate.
FLOOR: Distributes outside air through the floor vents.
MIX: Distributes outside air through the windshield defroster vents, floor
vents and side window demisters.
:Distributes outside air through the windshield defroster vents and
the side window demisters.
Operating tips
•To reduce fog build up on the windshield during humid weather, place
the air flow selector in the
position.
•To reduce humidity build up inside the vehicle: do not drive with the
air flow selector in the OFF or MAX A/C position.
•Under normal weather conditions, do not leave the air flow selector in
MAX A/C or OFF when the vehicle is parked. This allows the vehicle
to “breathe” using the outside air inlet vents.
•Do not put objects under the front seats that will interfere with the
airflow to the back seats.
•Remove any snow, ice or leaves from the air intake area at the base of
the windshield.
123
LO
HIOFF
MIX VENTFLOOR
MAX
A/C NORM
A/C
2005 Grand Marquis(grn)
Owners Guide (post-2002-fmt)
USA(fus)
Climate Controls
34
Page 35 of 256

To aid in side window defogging/demisting in cold weather:
1. Select NORM A/C.
2. Adjust the temperature control to maintain comfort.
3. Set the fan speed to HI.
4. Direct the outer instrument panel vents towards the side windows.
To increase airflow to the outer instrument panel vents, close the vents
located in the middle of the instrument panel.
Do not place objects on top of the instrument panel as these
objects may become projectiles in a collision or sudden stop.
ELECTRONIC AUTOMATIC TEMPERATURE CONTROL (EATC)
SYSTEM (IF EQUIPPED)
1.OFF:Outside air is shut out and
the fan will not operate.
2.AUTOMATIC:Press
AUTOMATIC and select the desired
temperature using the temperature
controls. The system will automatically determine fan speed, airflow
location, and outside or recirculated air to heat or cool the vehicle to the
selected temperature. The fan speed will remain automatic unless the
thumbwheel is turned.
NORM A/CVENT FLOOR FLR • DEF DEF
HI
LO
MAX A/C
OUTSIDE TEMP AUTOMATICOFF
F
AUTO
1112310
987654
2005 Grand Marquis(grn)
Owners Guide (post-2002-fmt)
USA(fus)
Climate Controls
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Page 36 of 256

3.Fan speed:Turn to manually
increase or decrease fan speed.
4.Defrost:
Distributes outside air through the windshield defroster
vents and the side window demisters.
5.Floor/defrost:Distributes outside air through the windshield
defroster vents, floor vents and the side window demisters.
6.Floor:Distributes outside air through the floor vents.
7.Vent:Distributes outside air through the instrument panel vents.
8.Norm A/C:Uses outside air to cool the vehicle . Air flows from the
instrument panel vents only.
9.Max A/C:Uses recirculated air to cool the vehicle. Air flows from the
instrument panel vents only. This mode will help prevent unpleasant
odors from entering the vehicle.
10.Outside Temp:Press to display
the outside temperature. It will
remain in the display until pressed
again. The temperature will be most accurate when the vehicle is in
motion.
11.Temperature control:Press this control to select the temperature.
The display window indicates the selected temperature.
Fahrenheit/Celsius temperature:Press MAX A/C and DEF
simultaneously to toggle between Fahrenheit and Celsius temperature.
The set point temperatures in Celsius will be displayed in half-degree
increments.
Operating tips
•To reduce fog build up on the windshield during humid weather, place
the air flow selector in the
position.
•To reduce humidity build up inside the vehicle: do not drive with the
air flow selector in the OFF or MAX A/C position.
•Under normal weather conditions, do not leave the air flow selector in
MAX A/C or OFF when the vehicle is parked. This allows the vehicle
to “breathe” using the outside air inlet vents.
•Do not put objects under the front seats that will interfere with the
airflow to the back seats.
2005 Grand Marquis(grn)
Owners Guide (post-2002-fmt)
USA(fus)
Climate Controls
36
Page 37 of 256

•Remove any snow, ice or leaves from the air intake area at the base of
the windshield.
To aid in side window defogging/demisting in cold weather:
1. Select NORM A/C.
2. Adjust the temperature control to maintain comfort.
3. Set the fan speed to HI.
4. Direct the outer instrument panel vents towards the side windows.
To increase airflow to the outer instrument panel vents, close the vents
located in the middle of the instrument panel.
Do not place objects on top of the instrument panel as these
objects may become projectiles in a collision or sudden stop.
REAR WINDOW DEFROSTER
The rear defroster control is located
on the instrument panel.
Press the rear defroster control to
clear the rear window of thin ice
and fog. A small LED will illuminate
when the rear defroster is activated.
The ignition must be in the ON position to operate the rear window
defroster.
The defroster turns off automatically after a predetermined amount of
time or when the ignition is turned to the OFF position. To manually
turn off the defroster, press the control again.
Activating the rear window defroster will also activate the heated mirrors
(if equipped). For more information refer toHeated outside mirrorsin
theDriver Controlschapter.
Do not use razor blades or other sharp objects to clean the inside
of the rear window or to remove decals from the inside of the
rear window. This may cause damage to the heated grid lines and
will not be covered by your warranty.
2005 Grand Marquis(grn)
Owners Guide (post-2002-fmt)
USA(fus)
Climate Controls
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Page 50 of 256
Poor wiper quality can sometimes be improved by cleaning the wiper
blades, refer toWindows and wiper bladesin theCleaningchapter.
To prolong the life of the wiper blades, it is highly recommended to
scrape off the ice on the windshield before turning on the wipers. The
layer of ice has many sharp edges and can damage the micro edge of the
wiper rubber element.
TILT STEERING WHEEL
To adjust the steering wheel:
1. Pull and hold the steering wheel
release control toward you.
2. Move the steering wheel up or
down until you find the desired
location.
3. Release the steering wheel
release control. This will lock the
steering wheel in position.
Never adjust the steering wheel when the vehicle is moving.
ILLUMINATED VISOR MIRROR (IF EQUIPPED)
Lift the mirror cover to turn on the
visor mirror lamp.
2005 Grand Marquis(grn)
Owners Guide (post-2002-fmt)
USA(fus)
Driver Controls
50