2009 Mercury Grand Marquis tire pressure

Seating and Safety Restraints 87
Seating 87
Safety restraints 93
Airbags 108
Child restraints 120
Tires, Wheels and Loading 138
Tire information 138
Tire inflation 140
Tire Pressure Monitoring System (TPMS) 153
Vehicle loading 158
Trailer towing 164
Recreational towing 167
Driving 168
Starting 168
Brakes 173
Traction Control™ 177
Air suspension 178
Transmission operation 179
Roadside Emergencies 184
Getting roadside assistance 184
Hazard flasher switch 185
Fuel pump shut-off switch 186
Fuses and relays 187
Changing tires 194
Wheel lug nut torque 201
Jump starting 202
Wrecker towing 207
Customer Assistance 209
Reporting safety defects (U.S. only) 215
Reporting safety defects (Canada only) 215
Cleaning 216
Table of Contents
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2009 Grand Marquis(grn)
Owners Guide(own2002), 2nd Printing
USA(fus)

Vehicle Symbol Glossary
Power Windows
Front/Rear
Power Window Lockout
Child Safety Door
Lock/UnlockInterior Luggage
Compartment Release
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
Service Engine SoonEngine Air Filter
Passenger Compartment
Air FilterJack
Check Fuel CapLow Tire Pressure
Warning
2009 Grand Marquis(grn)
Owners Guide(own2002), 2nd Printing
USA(fus)
Introduction
11

Low tire pressure warning:
Illuminates when your tire pressure
is low. If the light remains on at
start up or while driving, the tire
pressure should be checked. Refer
toInflating your tiresin theTires, Wheels and Loadingchapter. When
the ignition is first turned to on, the light will illuminate for three
seconds to ensure the bulb is working. If the light does not turn on, have
the system inspected by your authorized dealer. For more information on
this system, refer toTire pressure monitoring system (TPMS)in the
Tires, Wheels and Loadingchapter.
Air suspension (if equipped):
Illuminates when the air suspension
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:Illuminates when the
overdrive function of the
transmission has been turned off;
refer to theDrivingchapter. If the
light does not illuminate, have the transmission serviced soon, or damage
may occur.
Speed control (if equipped):
Illuminates when the speed control
is activated. Turns off when the
speed control system is deactivated.
Door ajar (if equipped):
Illuminates when one of the doors is
not completely shut and the ignition
is turned to on. With the ignition in
the on position, a tone will sound for one second (if a door is open).
O/D
OFF
2009 Grand Marquis(grn)
Owners Guide(own2002), 2nd Printing
USA(fus)
Instrument Cluster
16

•They will not reappear until an ignition off-on cycle has been
completed.
This acts as a reminder that these warning conditions still exist within
the vehicle.
Warning display Status
Door ajar Warning cannot be reset
Coolant over temperature Warning returns after 10 minutes
Powertrain malfunction
Check fuel cap
Check air suspension
Fuel level low
Overdrive ON/OFF Warning returns after the ignition key
is turned from off to on.
Trunk ajar
Low tire pressure
Tire pressure monitor fault
Tire pressure sensor fault
Check compass module
Low washer fluid
Change engine oil
DOOR AJAR— Displayed when a door is not completely closed.
POWERTRAIN MALFUNCTION— Displayed when the powertrain is
not operating properly. If the warning stays on or continues to come on,
contact your authorized dealer as soon as possible.
COOLANT OVER TEMPERATURE— Displayed when the engine
coolant is overheating. Stop the vehicle as soon as safely possible, turn
off the engine and let it cool. Check the coolant and coolant level. Refer
toEngine coolantin theMaintenance and Specificationschapter. If
the warning stays on or continues to come on, contact your authorized
dealer as soon as possible.
WARNING:Never remove the coolant reservoir cap while the
engine is running or hot.
CHECK FUEL CAP— Displayed when the fuel filler cap is not
properly installed. Check the fuel filler cap for proper installation. Refer
toFuel filler capin theMaintenance and Specificationschapter.
2009 Grand Marquis(grn)
Owners Guide(own2002), 2nd Printing
USA(fus)
Driver Controls
68

CHECK AIR SUSPENSION— Displayed when the air suspension
system is not operating properly. If this message is displayed while
driving, pull off the road as soon as safely possible. For more
information, refer toAir suspension systemin theDrivingchapter.
FUEL LEVEL LOW— Displayed as an early reminder of a low fuel
condition. Warning message can be reset by pressing the RESET button,
but will return after 10 minutes. If any other button is pressed besides
RESET, the message ’’PRESS RESET TO CLEAR’’ will appear in the
message center. Once this message disappears (after approximately two
seconds), press RESET to clear the warning.
TRUNK AJAR— Displayed when the trunk is not completely closed.
OVERDRIVE OFF— Displayed when the overdrive is enabled or
disabled.
LOW TIRE PRESSURE— Displayed when one or more tires on your
vehicle have low tire pressure. Refer toInflating your tiresin theTires,
Wheels and Loadingchapter.
TIRE PRESSURE MONITOR FAULT— Displayed when the Tire
Pressure Monitoring System is malfunctioning. If the warning stays on or
continues to come on, contact your authorized dealer as soon as
possible.
TIRE PRESSURE SENSOR FAULT— Displayed when a tire pressure
sensor is malfunctioning, or your spare tire is in use (Note: this includes
the use of the optional full-sized matching spare tire and wheel). For
more information on how the system operates under these conditions,
refer toTire Pressure Monitoring System (TPMS)in theTires, Wheels
and Loadingchapter. If the warning stays on or continues to come on,
contact your authorized dealer as soon as possible.
WASHER FLUID LEVEL LOW— Indicates the washer fluid reservoir
is less than one quarter full. Check the washer fluid level. Refer to
Windshield washer fluidin theMaintenance and Specifications
chapter.
OIL LIFE CHANGE SOON— Displayed when the engine oil life
remaining is 10% or less. When oil life left is between 10% and 0%, the
XX% OIL LIFE CHANGE SOON message will be displayed.
OIL CHANGE REQUIRED— Displayed when the oil life left reaches
0%, the OIL CHANGE REQUIRED message will be displayed.
An oil change is required whenever indicated by the message center and
according to the recommended maintenance schedule. USE ONLY
RECOMMENDED ENGINE OILS.
2009 Grand Marquis(grn)
Owners Guide(own2002), 2nd Printing
USA(fus)
Driver Controls
69

WARNING:The traction grade assigned to this tire is based on
straight-ahead braking traction tests, and does not include
acceleration, cornering, hydroplaning or peak traction characteristics.
Temperature A B C
The temperature grades are A (the highest), B and C, representing the
tire’s resistance to the generation of heat and its ability to dissipate heat
when tested under controlled conditions on a specified indoor laboratory
test wheel. Sustained high temperature can cause the material of the tire
to degenerate and reduce tire life, and excessive temperature can lead to
sudden tire failure. The grade C corresponds to a level of performance
which all passenger car tires must meet under the Federal Motor Vehicle
Safety Standard No. 139. Grades B and A represent higher levels of
performance on the laboratory test wheel than the minimum required by
law.
WARNING:The temperature grade for this tire is established
for a tire that is properly inflated and not overloaded. Excessive
speed, underinflation, or excessive loading, either separately or in
combination, can cause heat buildup and possible tire failure.
TIRES
Tires are designed to give many thousands of miles of service, but they
must be maintained in order to get the maximum benefit from them.
Glossary of tire terminology
•Tire label:A label showing the OE (Original Equipment) tire sizes,
recommended inflation pressure and the maximum weight the vehicle
can carry.
•Tire Identification Number (TIN):A number on the sidewall of
each tire providing information about the tire brand and
manufacturing plant, tire size and date of manufacture. Also referred
to as DOT code.
•Inflation pressure:A measure of the amount of air in a tire.
•Standard load:A class of P-metric or Metric tires designed to carry a
maximum load at 35 psi [37 psi (2.5 bar) for Metric tires]. Increasing
the inflation pressure beyond this pressure will not increase the tire’s
load carrying capability.
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Tires, Wheels and Loading
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•Extra load:A class of P-metric or Metric tires designed to carry a
heavier maximum load at 41 psi [43 psi (2.9 bar) for Metric tires].
Increasing the inflation pressure beyond this pressure will not increase
the tire’s load carrying capability.
•kPa:Kilopascal, a metric unit of air pressure.
•PSI:Pounds per square inch, a standard unit of air pressure.
•Cold inflation pressure:The tire pressure when the vehicle has
been stationary and out of direct sunlight for an hour or more and
prior to the vehicle being driven for 1 mile (1.6 km).
•Recommended inflation pressure:The cold inflation pressure found
on the Safety Compliance Certification Label or Tire Label located on
the B-Pillar or the edge of the driver’s door.
•B-pillar:The structural member at the side of the vehicle behind the
front door.
•Bead area of the tire:Area of the tire next to the rim.
•Sidewall of the tire:Area between the bead area and the tread.
•Tread area of the tire:Area of the perimeter of the tire that
contacts the road when mounted on the vehicle.
•Rim:The metal support (wheel) for a tire or a tire and tube assembly
upon which the tire beads are seated.
INFLATING YOUR TIRES
Safe operation of your vehicle requires that your tires are properly
inflated. Remember that a tire can lose up to half of its air pressure
without appearing flat.
Every day before you drive, check your tires. If one looks lower than the
others, use a tire gauge to check pressure of all tires and adjust if
required.
At least once a month and before long trips, inspect each tire and check
the tire pressure with a tire gauge (including spare, if equipped). Inflate
all tires to the inflation pressure recommended by Ford Motor Company.
You are strongly urged to buy a reliable tire pressure gauge, as automatic
service station gauges may be inaccurate. Ford recommends the use of a
digital or dial-type tire pressure gauge rather than a stick-type tire
pressure gauge.
Use the recommended cold inflation pressure for optimum tire
performance and wear. Under-inflation or over-inflation may cause
uneven treadwear patterns.
2009 Grand Marquis(grn)
Owners Guide(own2002), 2nd Printing
USA(fus)
Tires, Wheels and Loading
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WARNING:Under-inflation is the most common cause of tire
failures and may result in severe tire cracking, tread separation
orblowout, with unexpected loss of vehicle control and increased risk
of injury. Under-inflation increases sidewall flexing and rolling
resistance, resulting in heat buildup and internal damage to the tire. It
also may result in unnecessary tire stress, irregular wear, loss of
vehicle control and accidents. A tire can lose up to half of its air
pressure and not appear to be flat!
Always inflate your tires to the Ford recommended inflation pressure
even if it is less than the maximum inflation pressure information found
on the tire. The Ford recommended tire inflation pressure is found on
the Safety Compliance Certification Label or Tire Label which is located
on the B-Pillar or the edge of the driver’s door. Failure to follow the tire
pressure recommendations can cause uneven treadwear patterns and
adversely affect the way your vehicle handles.
Maximum Permissible Inflation Pressureis the tire manufacturer’s
maximum permissible pressure and/or the pressure at which the
maximum load can be carried by the tire. This pressure is normally
higher than the manufacturer’s recommended cold inflation pressure
which can be found on the Safety Compliance Certification Label or Tire
Label which is located on the B-Pillar or the edge of the driver’s door.
The cold inflation pressure should never be set lower than the
recommended pressure on the Safety Compliance Certification Label or
Tire Label.
When weather temperature changes occur, tire inflation pressures also
change. A 10°F (6°C) temperature drop can cause a corresponding drop
of 1 psi (7 kPa) in inflation pressure. Check your tire pressures
frequently and adjust them to the proper pressure which can be found
on the Safety Compliance Certification Label or Tire Label.
To check the pressure in your tire(s):
1. Make sure the tires are cool, meaning they are not hot from driving
even a mile.
If you are checking tire pressure when the tire is hot, (i.e. driven more
than 1 mile [1.6 km]), never “bleed” or reduce air pressure. The tires are
hot from driving and it is normal for pressures to increase above
recommended cold pressures. A hot tire at or below recommended cold
inflation pressure could be significantly under-inflated.
2009 Grand Marquis(grn)
Owners Guide(own2002), 2nd Printing
USA(fus)
Tires, Wheels and Loading
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