FORD 2008 Explorer v.1 - Manual (Page 156)

How to reprogram your remote entry transmitters
You must have all remote entry transmitters (maximum of six)
available before beginning this procedure. If all remote entry transmitters
are not present during the programming procedure, the transmitters that
are not present during programming will no longer operate the vehicle.
Note: Ensure the brake pedal is not
depressed during this sequence.
To reprogram the remote entry
transmitters:
1. Ensure the vehicle is electronically unlocked.
2. Put the key in the ignition.
3. Turn the key from the 1 (OFF/LOCK) position to 3 (ON).
4. Cycle eight times rapidly (within 10 seconds) between the 1
(OFF/LOCK) position and 3 (ON). Note: The eighth turn must end in
the 3 (ON) position.
5. The doors will lock, then unlock, to confirm that the programming
mode has been activated.
6. Within 20 seconds press any button on the remote entry transmitter.
Note: If more than 20 seconds have passed you will need to start the
procedure over again.
7. The doors will lock, then unlock, to confirm that this remote entry
transmitter has been programmed.
8. Repeat Step 6 to program each additional remote entry transmitter.
9. Turn the ignition to the 1 (OFF/LOCK) position after you have
finished programming all of the remote entry transmitters.
10. The doors will lock, then unlock, to confirm that the programming
mode has been exited.
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2008 Explorer (exp)
Owners Guide (post-2002-fmt)
USA (fus)
Locks and Security
156