Remote Keyless Entry (RKE) Transmitter Programming: Mustang
Open driver's window. Cycle ignition switch from LOCK to RUN position 8 times within 10 seconds ending in RUN position. Doors will lock, then unlock to verify program mode has been entered. Within 7.5 seconds, press any button on transmitter. Doors will lock, then unlock to confirm transmitter has been programmed. Turn ignition switch to LOCK position or wait 5 minutes to exit program mode. Doors will lock, then unlock to confirm program mode has been exited.
NOTE:
After first remote transmitter is programmed, all other remote transmitters will be erased from memory. All remote transmitters must be programmed at the same time.