Section 19 (Power Door Locks System & Remote Keyless Entry Systems): Programming: Notes
WARNING: This page is about a different car, the 2000 Ford Windstar and 1999 Ford Windstar. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
All transmitters are programmable and must be set at the same time. Verify that the anti-theft system is not armed or triggered before programming transmitters.