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.
2008 F-150 (f12)
Owners Guide (post-2002-fmt)
USA (fus)
Tires, Wheels and Loading
229
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