FORD 2012 E-450 - Manual (Page 160)

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 a
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. Make sure tires are at the proper
pressure. See Inflating your tires
in this chapter.
2. After inflating your tires to the
manufacturer’s recommended
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 turns off.
Spare tire 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 the tires are properly inflated and
the spare tire is not in use but the
light remains on, contact your
authorized dealer as soon as
possible.
Tire rotation
without
sensor
training On vehicles with different front and
rear tire pressures, the TPMS must
be retrained following every tire
rotation. See Tire rotation in this
chapter.
Tires, Wheels and Loading
160
2012 Econoline (eco)
Owners Guide, 1st Printing
USA (fus)