2001 Mercury Grand Marquis suspension

This system keeps the rear of your vehicle at a constant level by
automatically adding air or releasing air from the springs.
If you exceed the load limit, the rear air suspension may not operate.
The air suspension shut-off switch is
located on the left side of the trunk.
If this switch is in the OFF position,
the rear air suspension will not
operate.
On vehicles equipped with
Air Suspension, turn OFF
the Air Suspension switch prior to
jacking, hoisting or towing your
vehicle.
Normal vehicle operation does not
require any action by the driver.
AUTOMATIC TRANSMISSION OPERATION (IF EQUIPPED)
Brake-shift interlock
This vehicle is equipped with a brake-shift interlock feature that prevents
the gearshift lever from being moved from P (Park) when the ignition is
in the ON position unless brake pedal is depressed.
If you cannot move the gearshift lever out of P (Park) with ignition in
the ON position and the brake pedal depressed:
1. Apply the parking brake, turn ignition key to LOCK, then remove the
key.
2. Insert the key and turn it to OFF. Apply the brake pedal and shift to N
(Neutral).
3. Start the vehicle.
If it is necessary to use the above procedure to move the gearshift lever,
it is possible that a fuse has blown or the vehicle's brakelamps are not
operating properly. Refer toFuses and relaysin theRoadside
emergencieschapter.
AIR SUSPENSION
SWITCH
INTERRUPTEUR DE
LA SUSPENSION
PNEUMATIQUE
WARNING
AVERTISSEMENTOFF-ARRET
To prevent sudden
vehicle movement,
turn off air suspen-
sion switch prior to
jacking, hoisting or
towing vehicle.
Pour prévenir tout mouvement soudain du véhi-
cule, placer à l'arrêt l'interrupteur de la suspension
pneumatique avant de lever to véhicule (cric ou
pont élévateur) ou de le remorquer.
OFF
Driving
139

The weight of your loaded trailer should not exceed 907 kg (2 000 lbs).
The GCW of your vehicle and trailer should not exceed 2 993 kg
(6 600 lbs).
TRAILER TOWING
Your vehicle is classified as a light duty towing vehicle. Do not tow a
trailer until your vehicle has been driven at least 3 200 km (2 000 miles).
Towing a trailer places an additional load on your vehicle's engine,
transmission, brakes, tires and suspension. Inspect these components
carefully after towing.
Your loaded trailer should weigh no more than 907 kg (2 000 lbs.).
Do not exceed the GVWR or the GAWR specified on the
certification label.
Towing trailers beyond the maximum recommended gross trailer
weight could result in engine damage, transmission/axle damage,
structural damage, loss of control, and personal injury.
Preparing to tow
Use the proper equipment for towing a trailer, and make sure it is
properly attached to your vehicle. See your dealer or a reliable trailer
dealer if you require assistance.
Hitches
Do not use hitches that clamp onto the vehicle bumper. Use a load
carrying hitch. You must distribute the load in your trailer so that 10% of
the total weight of the trailer is on the tongue.
Safety chains
Always connect the trailer's safety chains to the frame or hook retainers
of the vehicle hitch. To connect the trailer's safety chains, cross the
chains under the trailer tongue and allow slack for turning corners.
If you use a rental trailer, follow the instructions that the rental agency
gives to you.
Do not attach safety chains to the bumper.
Driving
145

The high-current fuses are coded as follows.
Fuse/Relay
LocationFuse Amp
RatingPower Distribution Box Description
1 20A* Electric Fuel Pump Relay
2 30A* Generator, Starter Relay, Fuses 15 and 18
3 25A* Radio, CD Changer, Subwoofer Amplifier
4 Ð Not Used
5 15A* Horn Relay
6 20A* DRL Module
7 20A CB Power Door Locks, Power Seats, Trunk Lid
Release
8 30A** Air Suspension System
9 50A** See Fuses 5 and 9
10 50A** See Fuses 1, 2, 6, 7, 10, 11, 13 and Circuit
Breaker 14
11 50A** See Fuses 4, 8, 16 and Circuit Breaker 12
1
2
3
4
5
6
7
89
10
11
12
13
14
15
16
17RELAY
1
RELAY
2
RELAY
3
RELAY
4
Roadside emergencies
156

Fuse/Relay
LocationFuse Amp
RatingPower Distribution Box Description
12 30A** PCM Power Relay, PCM
13 50A** High Speed Cooling Fan Relay
14 40A** Rear Window Defrost Relay, Also see Fuse
17
15 40A** Anti-Lock Brake Module
16 Ð Not Used
17 30A CB Cooling Fan Relay
Relay 1 Ð Rear Defrost Relay
Relay 2 Ð Horn Relay
Relay 3 Ð Cooling Fan Relay
Relay 4 Ð Air Suspension Pump Relay
* Mini Fuses ** Maxi Fuses
Relays
Relays are located in the power distribution box and should be replaced
by qualified technicians.
CHANGING THE TIRES
If you get a flat tire while driving, do not apply the brake heavily.
Instead, gradually decrease your speed. Hold the steering wheel firmly
and slowly move to a safe place on the side of the road.
Temporary spare tire information
Your vehicle may have a temporary or full-size spare tire. The temporary
spare tire for your vehicle is labeled as such. It is smaller than a regular
tire and is designed for emergency use only. Replace this tire with a
full-size tire as soon as possible.
If you use the temporary spare tire continuously or do not follow
these precautions, the tire could fail, causing you to lose control
of the vehicle, possibly injuring yourself or others.
Roadside emergencies
157

3. Remove the spare tire and the
jack. The jack could be located:
²A Ð under the spare tire or
²B Ð in the wheel well
On vehicles equipped with
Air Suspension, turn OFF
the Air Suspension switch prior to
jacking, hoisting or towing your
vehicle.
Refer toAir suspension systemin
theDrivingchapter of theOwner's
Guidefor more information.
4. Remove the lug wrench from the
jack. Rotate the lug wrench socket
out from the handle.
B
A
OFF
A
Roadside emergencies
159

To lessen risk of personnal
injury, do not put any part
of your body under the vehicle
while changing a tire. Do not start
the engine when your vehicle is
on the jack. The jack is ONLY
meant for changing the tire.
²Never use the rear differential
as a jacking point.
7. Remove the lug nuts with the lug wrench.
8. Replace the flat tire with the spare tire, making sure the valve stem is
facing outward. Reinstall lug nuts until the wheel is snug against the hub.
Do not fully tighten the lug nuts until the wheel has been lowered.
9. Lower the vehicle by turning the jack handle counterclockwise.
10. Remove the jack and fully
tighten the lug nuts in the order
shown.
11. Put flat tire, jack and lug wrench
away.
12. Turn on the air suspension
switch (if equipped).
1
4 3
2 5
Roadside emergencies
161

WRECKER TOWING
If you need to have your vehicle towed, contact a professional towing
service or, if you are a member, your roadside assistance center.
It is recommended that your vehicle be towed with a wheel lift or flatbed
equipment. Do not tow with a slingbelt. Ford Motor Company has not
approved a slingbelt towing procedure.
Before your vehicle can be towed, the air suspension control in the
luggage compartment must be turned to the OFF position (if equipped).
If the vehicle is towed by other means or incorrectly, vehicle
damage may occur.
Ford Motor Company provides a towing manual for all authorized tow
truck operators. Have your tow truck operator refer to this manual for
proper hook-up and towing procedures for your vehicle.
Roadside emergencies
167

Failure to follow these precautions may adversely affect the
handling of the vehicle and make it easier for the driver to lose
control and roll over.
Tires that are larger or smaller than your vehicle's original tires may also
affect the accuracy of your speedometer.
SNOW TIRES AND CHAINS
Snow tires must be the same size and grade as the tires you
currently have on your vehicle.
The tires on your vehicle have all weather treads to provide traction in
rain and snow. However, in some climates, you may need to use snow
tires and chains.
Follow these guidelines when using snow tires and chains:
²Use only cable type chains offered by Ford as an accessory or
equivalent on vehicles with aluminum wheels. Using SAE class S or
other conventional link type chains may cause damage to the vehicle's
wheel house and/or body. Either cable type chains or SAE class S
chains can be used on vehicles with original equipment steel wheels.
²Install chains securely, verifying that the chains do not touch any
wiring, brake lines or fuel lines.
²Drive cautiously. If you hear the chains rub or bang against your
vehicle, stop and re-tighten the chains. If this does not work, remove
the chains to prevent damage to your vehicle.
²If possible, avoid fully loading your vehicle.
²Remove the tire chains when they are no longer needed. Do not use
tire chains on dry roads.
²The suspension insulation and bumpers will help prevent vehicle
damage. Do not remove these components from your vehicle when
using snow tires and chains.
Maintenance and care
194