FORD 2011 Expedition - Manual (Page 221)

To restore the full functionality of the tire pressure monitoring system,
have the damaged road wheel/tire repaired and remounted on your
vehicle. For additional information, refer to Changing tires with TPMS
in this section.
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, contact
your authorized dealer as soon
as possible.
Tires, Wheels and Loading
221
2011 Expedition (exd)
Owners Guide, 1st Printing
USA (fus)