FORD 2009 F-550 v.3 - Manual (Page 248)

When you believe your system is not operating properly
The main function of the Tire Pressure Monitoring System is to warn you
when your tires need air. It can also warn you in the event the system is
no longer capable of functioning as intended. Please refer to the
following chart for information concerning your Tire Pressure Monitoring
System:
Low Tire
Pressure
Warning
Light Possible cause Customer Action Required
Solid
Warning
Light Tire(s)
under-inflated 1. Check your tire pressure to
ensure tires are properly inflated;
refer to Inflating your tires in this
chapter.
2. After inflating your tires to the
manufacturer’s recommended
inflation pressure as shown on the
Tire Label (located on the edge of
driver’s door or the B-Pillar), the
vehicle must be driven for at least
two minutes over 20 mph (32 km/h)
before the light will turn OFF.
Spare tire in use Your temporary spare tire is in use.
Repair the damaged road wheel/tire
and reinstall it on the vehicle to
restore system functionality. For a
description on how the system
functions, refer to When your
temporary spare tire is installed in
this section.
TPMS malfunction If your tires are properly inflated and
your spare tire is not in use and the
light remains ON, have the system
inspected by your authorized dealer.
Tire rotation
without sensor
training On vehicles with different front and
rear tire pressures, the TPMS system
must be retrained following every
tire rotation. Refer to Tire rotation
in this chapter.
2009 F-250/350/450/550 (f23)
Owners Guide, 3rd Printing
USA (fus)
Tires, Wheels and Loading
248