Page 63 of 248

WINDSHIELD WIPER/WASHER CONTROLS
Rotate the windshield wiper control
to the desired interval, low or high
speed position.
The bars of varying length are for
intermittent wipers. When in this
position rotate the control upward
for fast intervals and downward for
slow intervals.
Push the end of the stalk to activate
washer. Push and hold for a longer
wash cycle.
Windshield wiper/washer features
The exterior lamps will illuminate after 10–20 second delay when the
ignition is ON and the windshield wiper control is in the LO or HI
position.
The lights will remain on for 30 seconds after the wipers are turned off.
Maintenance and care of windshield wiper blades
Check the wiper blades for wear at least twice a year or when they seem
less effective. Substances such as tree sap, road salt, oil film and some
hot wax treatments used by commercial car washes reduce the
effectiveness of wiper blades.
Operation of the wipers on dry glass for long periods of time may cause
deterioration of the wiper blades. Always use washer fluid when using
the wipers to remove salt or dirt from a dry windshield. Avoid using the
blades to remove frost or ice from the windshield. If the wiper blades are
frozen to the windshield, loosen the wiper blades before operating the
wipers to prevent damage to the wiper system.
It the windshield is not clear after using the windshield washer wiper
system, or if the wiper blades chatter, streak or smear when operating, it
is possible that wax, road salt or oil film may be on the windshield or the
wiper blades. Refer toCleaning window and wiper bladesin the
Cleaningchapter.
Changing the wiper blades
To make changing the wiper blades easy, turn the ignition to ACC, then
turn the wipers on. When the wipers reach the vertical position, turn the
ignition to LOCK.
2003 Grand Marquis(grn)
Owners Guide (post-2002-fmt)
USA English(fus)
Driver Controls
Driver Controls
63
Page 77 of 248
Never adjust the accelerator and brake pedal with feet on the
pedals while the vehicle is moving.
SPEED CONTROL (IF EQUIPPED)
To turn speed control on
•Press ON.
Vehicle speed cannot be controlled
until the vehicle is traveling at or
above 48 km/h (30 mph).
Do not shift the gearshift lever
into N (Neutral) with the speed
control on.
Do not use the speed
control in heavy traffic or
on roads that are winding,
slippery, or unpaved.
To turn speed control off
•Press OFF or
•Turn off the vehicle ignition.
Once speed control is switched off,
the previously programmed set
speed will be erased.
ON
OFF
ON
OFF
2003 Grand Marquis(grn)
Owners Guide (post-2002-fmt)
USA English(fus)
Driver Controls
77
Page 78 of 248

To set a speed
•Press SET ACCEL. For speed
control to operate, the speed
control must be ON and the
vehicle speed must be greater
than 48 km/h (30 mph).
If you drive up or down a steep hill, your vehicle speed may vary
momentarily slower or faster than the set speed. This is normal.
Speed control cannot reduce the vehicle speed if it increases above the
set speed on a downhill. If your vehicle speed is faster than the set
speed while driving on a downhill, you may want to shift to the next
lower gear or apply the brakes to reduce your vehicle speed.
If your vehicle slows down more than 16 km/h (10 mph) below your set
speed on an uphill, your speed control will disengage. This is normal.
Pressing RESUME will re-engage it.
Do not use the speed control in heavy traffic or on roads that
are winding, slippery, or unpaved.
To set a higher set speed
•Press and hold SET ACCEL.
Release the control when the
desired vehicle speed is reached
or
•Press and release SET ACCEL to
operate the Tap-Up function.
Each press will increase the set
speed by 1.6 km/h (1 mph) or
•Accelerate with your accelerator
pedal. When the desired vehicle speed is reached, press and release
SET ACCEL.
You can accelerate with the accelerator pedal at any time during speed
control usage. Releasing the accelerator pedal will return your vehicle to
the previously programmed set speed.
RES
SET
ACCEL
COAST
RES
SET
ACCEL
COAST
2003 Grand Marquis(grn)
Owners Guide (post-2002-fmt)
USA English(fus)
Driver Controls
78
Page 79 of 248
To set a lower set speed
•Press and hold COAST. Release
the control when the desired
speed is reached or
•Press and release COAST to
operate the Tap-Down function.
Each press will decrease the set
speed by 1.6 km/h (1 mph) or
•Depress the brake pedal. When
the desired vehicle speed is
reached, press SET ACCEL.
To disengage speed control
•Depress the brake pedal.
Disengaging the speed control will
not erase the previously
programmed set speed.
RES
SET
ACCEL
COAST
RES
SET
ACCEL
COAST
2003 Grand Marquis(grn)
Owners Guide (post-2002-fmt)
USA English(fus)
Driver Controls
79
Page 80 of 248
Pressing OFF will erase the
previously programmed set speed.
To return to a previously set speed
•Press RES. For RESUME to
operate, the vehicle speed must
be faster than 48 km/h (30 mph).
Indicator light (if equipped)
This light comes on when either the
SET ACCEL or RES 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.
ON
OFF
RES
SET
ACCEL
COAST
SPEED CONTROL
2003 Grand Marquis(grn)
Owners Guide (post-2002-fmt)
USA English(fus)
Driver Controls
80
Page 81 of 248

STEERING WHEEL CONTROLS (IF EQUIPPED)
Radio control features
•Press BAND/MODE to select AM,
FM1, FM2, TAPE or CD (if
equipped).
In Radio mode:
•Press MEM/NEXT to select a
preset station from memory.
In Tape mode:
•Press MEM/NEXT to listen to the
next selection on the tape.
In CD mode:
•Press MEM/NEXT to listen to the
next track on the disc.
In any mode:
•Press VOL up or down to adjust the volume.
Climate control features
•Press TEMP up or down to adjust temperature.
•Press FAN up or down to adjust fan speed.
MOON ROOF (IF EQUIPPED)
To open the moon roof:
•Press and hold the control
forward to raise the moon roof to
the vent position (when the glass
panel is closed).
•For one-touch operation, press
and release the rear portion of
the control; this will fully open
the moon roof.
•To stop one-touch operation at
the desired position, press and
release the forward portion of the control.
To close the moon roof:
•Press and hold the front portion of the control.
NEXT
MODE
2003 Grand Marquis(grn)
Owners Guide (post-2002-fmt)
USA English(fus)
Driver Controls
81
Page 86 of 248

ELECTRONIC MESSAGE CENTER (IF EQUIPPED)
The electronic message center only
works when the ignition is in the
ON position.
The message center allows you to:
•see problems such as door ajar,
air suspension, trunk ajar, washer
fluid low
•see how many kilometers/miles
you can drive before running out
of fuel
•see when overdrive has been deactivated
•monitor the average fuel economy
•check the distance traveled during a trip on either Trip A or Trip B
•monitor the average speed
Selectable features
Reset
Press this control to reset the
selected message center function to
zero. The only functions which can
be reset are:
•AVG ECON
•TRIP A or TRIP B
•AVG SPEED
E/M
Press this control to switch the
electronic instrument cluster display
and the message center display from
metric to English units.
CHECK
TRUNK AJAR LTR/100 kmAIR SUSPENSION
OVERDRIVE OFFDOOR
AJAR
LOW
WASHER
FLUID
DISTANCE
TO EMPTY
TRIP
AAVG FUEL
ECONOMY
TRIP
BAVG
SPEED
km
MILES
/GAL
RESET E/M SELECT
RESET E/M SELECT
2003 Grand Marquis(grn)
Owners Guide (post-2002-fmt)
USA English(fus)
Driver Controls
86
Page 87 of 248

Select
Each press of the SELECT control
will select a different function.
•Press the right side of the control
to advance the function to the
right.
•Press the left side of the control
to advance the function to the
left.
To reset any function:
1. Push either the right or left side of the SELECT control to choose the
desired function.
2. Press the RESET control and the
selected message center function
will be reset to zero.
Message center functions
DISTANCE TO EMPTY (DTE)
This function estimates
approximately how far you can drive
with the fuel remaining in your tank
under normal driving conditions.
Remember to turn the ignition OFF
when refueling to allow this feature to correctly detect the added fuel.
The DTE function will flash for 5 seconds and sound a tone for 1 second
when you have approximately:
•80 km (50 miles) left before you run out of fuel
•40 km (25 miles)
•16 km (10 miles)
RESET E/M SELECT
RESET E/M SELECT
DISTANCE
TO EMPTY
TRIP
AAVG FUEL
ECONOMY
TRIP
BAVG
SPEED
2003 Grand Marquis(grn)
Owners Guide (post-2002-fmt)
USA English(fus)
Driver Controls
87