Ford 2004 Expedition Owner's Manual page 336

Maintenance and Specifications
to the receiver module located in the vehicle. The receiver module then
electronically transmits the status to the message center. For more tire
warning information, refer to the Message center in the Driver Controls
chapter.
The Tire Pressure Monitoring System 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
manually checking tire pressure. The tire pressure should be
checked periodically (at least monthly) using a tire gauge, see
Inspecting and inflating your tires in this chapter. Failure to
properly maintain your tire pressure could increase the risk of tire
failure, loss of control, vehicle rollover and personal injury.
Changing tires with TPMS
It is recommended that you always
have your tires serviced by a dealer
or qualified technician. Each road
tire is equipped with a tire
pressure sensor mounted on the
wheel inside the tire connected
to 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
whenever the sensor is removed to minimize air leaks.
The tire pressure should be checked periodically (at least monthly) using
an accurate tire gauge, refer to Inspecting and inflating your tires in
this chapter.
SNOW TIRES AND CHAINS
Snow tires must be the same size and grade as the tires you
currently have on your vehicle.
336
2004 Expedition (exd)
Owners Guide (post-2002-fmt)
USA English (fus)