2006 Mercury Mountaineer

Programming Guide for 2006 Keyless Entry Remote Fob

Important Notice: The 2006 Mercury Mountaineer supports onboard programming for keyless entry remote fobs. When programming, all remotes must be included in the same session, or any remotes not programmed will be erased from the vehicle’s memory.

Programming Instructions:

  • Step 1: Sit in the driver’s seat and ensure that all doors are closed securely.
  • Step 2: Have all remote fobs you plan to program on hand. Each must be programmed during this session.
  • Step 3: Insert the key into the ignition switch without starting the vehicle.
  • Step 4: Within 10 seconds, cycle the ignition key from the OFF position to the RUN position (do not crank the engine) eight times, ending in the RUN position on the eighth turn. Perform this step quickly and consistently.
  • Step 5: After the eighth cycle, the door locks will automatically lock and unlock, confirming that the vehicle has entered programming mode.
  • Step 6: Within 20 seconds, press any button on the first remote fob. The door locks will cycle again to confirm successful programming.
  • Step 7: If you have a second remote, press any button on it within 20 seconds of programming the first. The locks will cycle again, confirming that the second remote has been accepted.
  • Step 8: Repeat Step 7 for each additional remote. Each one must be programmed within 20 seconds of the previous to remain in programming mode.
  • Step 9: Once all remotes have been programmed, turn the ignition key to the OFF position.
  • Step 10: The door locks will cycle one final time, indicating the vehicle has exited programming mode.
  • Step 11: Remove the key from the ignition and test each remote fob to verify that both lock and unlock functions operate correctly.

Additional Considerations: All remotes must be programmed together. Any remote not included during the session will be deactivated. Precise timing is critical. Delays between steps can cause the vehicle to exit programming mode prematurely. Ensure that each remote has a fully functional battery before starting the process to prevent communication failures.