2009 Mercury Grand Marquis

Programming Guide for 2009 Keyless Entry Remote Fob

Important Notice: This model supports onboard programming for standard keyless entry remote fobs using a timed ignition cycle procedure. All remotes must be programmed during the same session. Any remote not included during the process will be erased from the system’s memory.

Programming Instructions:

  • Step 1: Sit in the driver’s seat and close all doors. Ensure that all remote fobs you wish to program are with you before beginning.
  • Step 2: Insert the ignition key into the ignition switch without starting the engine.
  • Step 3: Within 10 seconds, turn the ignition key from the OFF position to the RUN position eight times, ending with the key in the RUN position on the eighth cycle. Perform this action quickly and smoothly.
  • Step 4: The door locks will lock and then unlock, confirming that the vehicle has entered programming mode.
  • Step 5: Within 20 seconds, press any button on the first remote fob. The door locks will cycle again to confirm that the remote has been successfully programmed.
  • Step 6: If you are programming a second remote, press any button on it within 20 seconds of programming the first. The door locks will cycle again to confirm that the second remote has been accepted.
  • Step 7: Repeat Step 6 for any additional remotes, making sure to program each within 20 seconds of the last.
  • Step 8: Once all remotes have been programmed, turn the ignition to the OFF position. The locks will cycle once more, indicating that programming mode has ended.
  • Step 9: Remove the key and test each remote to confirm that lock and unlock functions are working properly.
  • Step 10: If any remote fails to function, restart the process from Step 1, ensuring all timing requirements are followed exactly.

Additional Considerations: All remotes must be programmed together. Remotes not included in the session will be deleted from the system memory. Accurate timing is essential. Delays during ignition cycling or button presses may result in failed programming. Check remote batteries in advance. Weak or depleted batteries can interfere with proper signal transmission during the programming process.