Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSMERCURY2009MOUNTAINEER 4.6 8, RWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 118 (HANDLES, LOCKS, LATCHES & ENTRY SYSTEMS)GENERAL PROCEDURESAUTOLOCK & HORN CHIRP PROGRAMMINGAUTOLOCK
2009 Mercury Mountaineer 4.6 8, RWD
AUTOLOCK & Horn Chirp Programming: Autolock
2009 Mercury Mountaineer 4.6 8, RWDSECTION Autolock
WARNING: This page is about a different car, the 2009 Mercury Grand Marquis and 2009 Ford Crown Victoria. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
This procedure must be completed within 30 seconds.
- Close all the doors.
- Turn the key to the OFF position.
- Turn the key to the RUN position.
- Press the UNLOCK button 3 times.
- Turn the key to the OFF position.
- Press the UNLOCK button 3 times.
- Turn the key to the RUN position. The doors lock and unlock to confirm entry into program mode.
- Press the UNLOCK then the LOCK button once to toggle the autolock feature on or off. The horn chirps once to confirm toggling of the autolock if any doors, the hood or the luggage compartment are open and chirps twice if all openings are closed.
- Exit program mode by turning the key to the OFF position.
- Drive the vehicle to confirm autolock status.
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.