Lost your 2009 Mercury Mariner Key Fob or need to program a new one? Reprogramming your key fob can often be done at home, saving you a trip to the dealership. This guide provides step-by-step procedures to program your 2009 Mercury Mariner key fob, ensuring you regain convenient access to your vehicle. While specific instructions can be found in your owner’s manual, here are two common methods that might work for your Mercury Mariner. Ensure you do not press the brake pedal at any point before or during these procedures.
Procedure A: Cycling Ignition Method
This procedure involves using the ignition to enter programming mode. Follow these steps carefully:
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Prepare the Vehicle: Ensure all doors are closed. Open only the driver’s side door. With the driver’s door open, press the “Unlock” button located on the driver’s side door panel. Now, insert your key into the ignition.
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Enter Programming Mode: This is the crucial step. Turn the ignition key from the “OFF” position to the “RUN” position rapidly eight times within 8 seconds. The eighth turn should end in the “RUN” position. Listen for the door locks to cycle (lock then unlock). This cycling indicates that your 2009 Mercury Mariner has successfully entered programming mode. If the locks do not cycle, you need to repeat this step more quickly and accurately, starting again from step 1. Remember, “OFF” is where you can remove your key, and “RUN” is the position just before starting the engine.
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Program the First Key Fob: Within 10 seconds of the door locks cycling, press any button on the first keyless remote you wish to program. The door locks should cycle again to confirm that the key fob has been successfully programmed.
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Program Additional Key Fobs (Optional): If you have more than one key fob to program, repeat step 3 for each additional remote. Make sure to do this within 10 seconds of the previous programming confirmation (door lock cycle).
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Exit Programming Mode: Turn the ignition key to the “OFF” position. The door locks will cycle one last time, indicating that the programming mode has ended.
*If Procedure A does not work for your 2009 Mercury Mariner, proceed to Procedure B. You can also try Procedure A again, but this time with the driver’s door closed throughout the process.
Procedure B: Fast Ignition Cycling Method
Procedure B is another common method that may be effective for programming your 2009 Mercury Mariner key fob.
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Prepare the Vehicle: Fasten your seatbelt and ensure all vehicle doors are completely closed.
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Enter Programming Mode: Turn the ignition key rapidly from the “OFF” position to the “RUN” position four times within 3 seconds.
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Confirmation Chime: Turn the ignition to the “OFF” position after the rapid cycling. You should hear a chime sound from the vehicle. This chime confirms that your Mercury Mariner has entered key fob programming mode.
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Program the First Key Fob: Within 10 seconds of hearing the chime, press and hold any button on the first keyless remote you want to program. You should hear a chime once more to confirm successful programming of this remote.
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Program Additional Key Fobs (Optional): If you have additional key fobs, within 10 seconds of the last chime, press and hold any button on the next keyless remote. Again, you will hear a chime confirming successful programming.
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Exit Programming Mode: Turn the ignition key to the “RUN” position to exit the key fob programming mode.
Important Notes for Both Procedures:
- Timing is Key: Both procedures require you to perform the steps in rapid succession. If you don’t hear the initial door lock cycle (Procedure A) or chime (Procedure B), it means the vehicle did not enter programming mode. If this happens, remove the key from the ignition, open and close the driver’s door, and begin the procedure again from step 1.
- All Remotes Programmed at Once: These procedures typically reset all previously programmed remotes. Therefore, you must reprogram all of your key fobs during a single programming session, not just the new or replacement fob.
- Troubleshooting: If you are still having trouble programming your 2009 Mercury Mariner key fob after trying both procedures, double-check your owner’s manual for specific instructions for your vehicle model. You may also need to consult a professional automotive locksmith or your local Mercury dealership for assistance.
By following these steps, you should be able to program your 2009 Mercury Mariner key fob and regain the convenience of remote locking and unlocking.
