FORD 2008 F-150 v.1 - Manual (Page 234)

illuminate while the tool is active. The horn will sound once within
10 seconds to indicate the process was successful.
Note: If a double horn chirp is heard, repeat the procedure. If a single
horn chirp is not heard, move the vehicle to rotate the wheels at least a
1 ⁄
4
-turn and repeat the procedure. If the horn does not sound while
attempting to reset any wheel, seek service from your authorized dealer.
3. Perform Steps 1 and 2 on the right front, right rear and finally the left
rear tires.
Successful completion of the reset procedure can be verified by turning
the ignition to OFF without the horn sounding. If two short beeps are
heard, the reset procedure was unsuccessful and must be repeated.
If after repeating the procedure two short beeps are heard when the key
is turned to OFF, seek assistance from your authorized dealer.
Rotation, pressure adjustment and TPMS reset example
The following example describes all the major steps involved in rotating
tires on a vehicle with different front and rear tire pressures. It
illustrates that the TPMS reset procedure needs to follow tire rotation
and pressure adjustment to avoid a possible false low tire warning.
Example:
A particular vehicle has the following recommended tire pressures: 50 psi
(345 kPa) front; 80 psi (552 kPa) rear.
Note: For your vehicle’s pressure, refer to the Safety Compliance
Certification Label located on the B-Pillar or the edge of your vehicle’s
driver’s door.
Before tire rotation
Sensor 1: 50 psi
Sensor 2: 50 psi
Sensor 3: 80 psi
Sensor 4: 80 psi
2008 F-150 (f12)
Owners Guide (post-2002-fmt)
USA (fus)
Tires, Wheels and Loading
234