2003 FORD EXPEDITION tire pressure

front door latch post pillar (a label may also be found on the fuel cap
filler door). Failure to follow tire pressure recommendations can
adversely affect the way your vehicle handles. Do not exceed the Ford
Motor Company recommended pressure even if it is less than the
maximum pressure allowed for the tire.
Each 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. Check tire pressure with a
tire gauge every few weeks
(including spare). Safe operation
requires tires that are neither
underinflated nor overloaded.
Periodically inspect the tire treads and remove stones, nails, glass or
other objects that may be wedged in the tread grooves. Check for holes
or cuts that may permit air leakage from the tire and make necessary
repairs.
Inspect the tire side walls for cuts, bruises and other damage. If internal
damage to the tire is suspected, have the tire demounted and inspected
to determine whether it needs to be repaired or replaced.
Maintenance and Modifications
The suspension and steering systems on your vehicle have been designed
and tested to provide both reliable and reasonably predictable
performance whether loaded or empty and durable load carrying
capability. For this reason, Ford Motor Company strongly recommends
that you do not make modifications such as adding or removing parts
(such as lift kits or stabilizer bars) or by using replacement parts not
equivalent to the original factory equipment.
Any modifications to a vehicle that raise the center of gravity can make
it more likely the vehicle will roll over as a result of a loss of control.
Ford Motor Company recommends that caution be used with any vehicle
equipped with a high load or device (such as ladder racks or pickup box
cover).
Failure to maintain your vehicle properly may void the warranty, increase
your repair cost, reduce vehicle performance and operational capabilities
and adversely affect driver and passenger safety. Frequent inspection of
vehicle chassis components is recommended if the vehicle is subjected to
heavy off-road usage.
Driving
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The fuses are coded as follows.
Fuse/Relay
LocationFuse Amp
RatingPassenger Compartment Fuse Panel
Description
1 10A* Front wiper motor, Instrument cluster,
Rear wiper motor, Tire Pressure
Monitoring System (TPMS)
2 20A* Turn signal flasher, Stoplamp switch,
Hazard flasher, IVD (AdvanceTrac)
stoplamps relay
3 7.5A* Power mirrors, Memory seat switch,
Memory seat module
4 10A* DVD player, Rear seat audio controls,
CDDJ
5 7.5A* Powertrain Control Module (PCM) (KA
power), SC deactivate switch, Manual
climate control mode switch, Stoplamp
switch, Brake-shift interlock (BSI)
solenoid, EATC control head, BSM module,
Speed control servo, 3rd row seat relay
6 15A* Headlamp switch, Parklamps, License plate
lamps, Trailer tow electric brake controller,
BSM parklamps relay
7 7.5A* Radio
8 10A* Rear window defroster switch, Heated
mirrors
9 10A* Alternator
10 20A* Back-up lamps, Back-up lamp relay, Trailer
tow parklamp relay
11 10A* A/C clutch relay, 4x4 IWE solenoid
12 10A* Speed control servo, Speed control
13 10A* EATC control head, Manual climate control
head
Roadside Emergencies
232

Fuse/Relay
LocationFuse Amp
RatingPassenger Compartment Fuse Panel
Description
14 15A* Climate control blend door actuator,
Daytime Running Lamps (DRL) relays,
Digital Transmission Range Sensor (DTRS)
back-up lamp
15 5A* AdvanceTracswitch, Instrument cluster
16 10A* ABS module
17 15A* Foglamps
18 10A* Electrochromic mirror, Auxiliary A/C,
Climate-controlled seats module,
Temperature solenoid, Turn signal flasher,
Sunload sensor, Electronic park brake
relay coil
19 10A* Restraints Control Module (RCM)
20 30A* Air suspension module (air spring
solenoids and height sensors), 4x4 module
21 15A* Instrument cluster (interior lamps),
Interior lamps, Electronic park brake relay,
Tire Pressure Monitoring System (TPMS)
22 10A* Door lock switch illumination, Moonroof
switch illumination, Radio (delayed
accessory signal), Flip window switch
23 10A* RH low beam
24 15A* Battery saver relay, Front map/Dome lamp,
2nd row dome/map lamp, Glove
compartment lamp, Cargo lamp, Rail
lamps, Vanity mirror lamps, Underhood
lamp
25 10A* LH low beam
26 20A* Horn relay, Horns
27 5A* Compass, Reverse sensing system module,
Brake shift interlock (BSI) solenoid,
Overdrive cancel switch, Air suspension
module (Run/Start sense)
Roadside Emergencies
233

Fuse/Relay
LocationFuse Amp
RatingPassenger Compartment Fuse Panel
Description
R05 T/T battery
charge relayTT 7 wire connector, Battery charge
R06 Front blower
relayBlower motor, Blower motor speed control
(EATC)
R201 T/T park
lamp relayTrailer tow park lamps feed
R202 Fog lamp
relayFront fog lamps
R203 PCM relay Fuse # 32, Fuse # 33, Fuse # 34, Fuel
pump relay, PCM solenoids and sensors
R301 T/T back-up
lamp relayBack-up lamps, TT connector (back-up
lamps), Electrochromic mirror
R302 Speed
control relayElectric cooling fan clutch, Speed control
servo
R303 Fuel pump
relayFuel pump shut-off switch, PCM fuel
pump monitor, Fuel pump
R304 Battery
saver relayRail lamps, Vanity mirror lamps, Dome
lamp, Glove box lamp, Instrument cluster
R305 Horn relay Dual note horn
* Mini Fuses ** Maxi Fuses
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.
The use of tire sealants is not recommended and may compromise the
integrity of your tires. The use of tire sealants may also affect your tire
pressure monitoring system (if equipped).
Spare tire information
Your vehicle is equipped with a spare tire that may be used as a spare or
a regular tire. The spare is identical to the other tires on your vehicle,
although the wheel may not match.
Roadside Emergencies
236

•Revving the engine before turning it off may reduce fuel economy.
•Using the air conditioner or defroster may reduce fuel economy.
•You may want to turn off the speed control in hilly terrain if
unnecessary shifting between third and fourth gear occurs.
Unnecessary shifting of this type could result in reduced fuel
economy.
•Warming up a vehicle on cold mornings is not required and may
reduce fuel economy.
•Resting your foot on the brake pedal while driving may reduce fuel
economy.
•Combine errands and minimize stop-and-go driving.
Maintenance
•Keep tires properly inflated and use only recommended size.
•Operating a vehicle with the wheels out of alignment will reduce fuel
economy.
•Use recommended engine oil. Refer toLubricant specificationsin
this chapter.
•Perform all regularly scheduled maintenance items. Follow the
recommended maintenance schedule and owner maintenance checks
found in your vehicle scheduled maintenance guide.
Conditions
•Heavily loading a vehicle or towing a trailer may reduce fuel economy
at any speed.
•Carrying unnecessary weight may reduce fuel economy (as much as
0.4 km/L [1 mpg] is lost for every 180 kg [400 lb] of weight carried).
•Adding certain accessories to your vehicle (for example bug
deflectors, rollbars/light bars, running boards, ski/luggage racks) may
reduce fuel economy.
•Using fuel blended with alcohol may lower fuel economy.
•Fuel economy may decrease with lower temperatures during the first
12–16 km (8–10 miles) of driving.
•Driving on flat terrain offers improved fuel economy as compared to
driving on hilly terrain.
•Transmissions give their best fuel economy when operated in the top
cruise gear and with steady pressure on the gas pedal.
Maintenance and Specifications
287

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. 109. Grades B and A represent higher levels of
performance on the laboratory test wheel than the minimum required by
law.
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.
SERVICING YOUR TIRES
Checking the tire pressure
•Use an accurate tire pressure gauge.
•Check the tire pressure when tires arecold,after the vehicle has
been parked for at least 3 hours or has been driven less than 5 km (3
miles). As you drive, the temperature in the tire warms up, increasing
the tire pressure.
•Adjust tire pressure to recommended specifications found on the
Certification Label. Tire pressure information can also be found on the
Tire Information label located on the inside of the fuel filler door.
•Check tires for proper air pressure monthly. Check spare tire for
proper air pressure every six months.
Improperly inflated tires can affect vehicle handling and can fail
suddenly, possibly resulting in loss of vehicle control.
Maintenance and Specifications
296

Make sure that all replacement tires are of the same size, type,
load-carrying capacity and tread design (e.g.,“All Terrain”,
“Touring”, etc.), as originally offered by Ford.
Do not replace your tires with“high performance”tires or larger
size tires.
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.
Tire pressure monitoring system (TPMS) (if equipped)
The tire pressure monitoring system provides the driver with a warning
message indicating when tire pressure is severely low or high. This
system is a supplement to normal tire maintenance including regular
manual inspections. The device will inform the operator of severe low or
high inflation pressures, but may not illuminate for less severe
discrepancies in inflation pressure.
The system uses radio-frequency pressure sensors to monitor the tire
pressure on all tires including the spare. The sensors transmit the tire
pressure readings to the receiver module located in the vehicle. The
receiver module then transmits the status to the message center. For
more tire warning information, refer to theMessage Centerin the
Driver controlschapter.
This device complies with part 15 of the FCC rules and with RS-210 of
Industry Canada. Operation is subject to the following two conditions:
(1) This device may not cause harmful interference, and (2) This device
must accept any interference received, including interference that may
cause undesired operation.
The tire pressure monitoring system is NOT a substitute for
checking tire pressure. The tire pressure should be checked
periodically (at least monthly) using a tire gauge, seeChecking the
tire pressurein this chapter. Failure to properly maintain your tire
pressure could increase the risk of tire failure and the potential for
personal injury.
Maintenance and Specifications
298

Changing tires with TPMS
It is recommended that you always
have your tires serviced by a dealer
or qualified technician.Each tire is
equipped with a tire pressure
sensor mounted on the wheel
inside the tire behind the valve
stem. The tire pressure sensor
must be unbolted from the wheel prior to tire removal. The
sensor can be removed by loosening the nut at the valve stem.
Failure to remove the sensor may damage it.The rubber grommet
(washer) between the wheel and the tire pressure sensor needs to be
replaced when any tire is changed to minimize air leaks.
The tire pressure should be checked periodically (at least monthly) using
a tire gauge, refer toChecking the tire pressurein this chapter.
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:
•Use only cable type chains or chains offered by Ford as an accessory
or equivalent. Other conventional link type chains may contact and
cause damage to the vehicle’s wheel house and/or body.
•Do not install chains on the front wheels. Chains on the front wheels
may interfere with suspension components.
•Install chains securely, verifying that the chains do not touch any
wiring, brake lines or fuel lines.
•Drive 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.
•If possible, avoid fully loading your vehicle.
•Remove the tire chains when they are no longer needed. Do not use
tire chains on dry roads.
•The 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 Specifications
299