2003 Mercury Grand Marquis Remote Programming instructions
Shear These Programming Instructions
1. Turn ignition from OFF to RUN 4 times within 3 seconds, with the 4th time
ending in RUN. Door locks will cycle to confirm programming mode.
2. Within 20 seconds, press any button on first keyless remote. Door locks will
cycle to confirm programming.
3. Within 20 seconds press any button on second keyless remote. Door locks
will cylcle to confirm programming.
4. Turn ignition to OFF.