2005 Mercury Grand Marquis Key Fob Programming Instructions

This keyless remote programming instruction works on this 4B remote with part # F8AB-15K601-AA, 3W73-15K601-AA, and 3W7Z-15K601-AA and FCC id CWTWB1U343, CWTWB1U313

Replacement Remote

1. Turn the ignition from OFF to RUN position (as far as you can go without cranking the engine) 4 times within 3 seconds, ending in the RUN position. The locks cycle confirming the system is in program mode.
2. Press ANY button on the remote to be programmed. When the signal from the remote is accepted by the vehicle, the LED will flash. When the first keyless entry transmitter is  programmed, all existing remotes will be removed from the system.
3. Go back to step 2 to program additional remotes.
4. To exit program mode, turn the ignition to OFF position or wait 10 seconds.

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