Take all your vehicle's transmitters
to your dealer for reprogramming
if:
² a transmitter is lost or
² you want to purchase additional
transmitters (up to four may be
programmed).
To reprogram the transmitters,
place the key in the ignition and
switch from OFF to ON eight times
in rapid succession within 10
seconds. After doors lock/unlock,
press any button on all
transmitters (up to four). When
completed, switch the ignition to
OFF.
All transmitters must be
programmed at the same time.
My understanding is that 97 ford expeditions are the only year instead of tuurning ignition switch 10 times off and on, you only have to do it 5 times.