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Home >> Ford >> 2004 >> Mustang Mach 1, Standard >> Repair and Diagnosis >> Body & Frame >> Door Locks >> Keyless Entry System And Computer Operated Lock System >> Diagnosis And Testing >> Keyless Entry >> Principles of Operation >> Remote Keyless Entry Door Locks Operation
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Remote Keyless Entry Door Locks Operation

The remote entry feature allows the customer to unlock the driver door, unlock all doors, and lock all doors using a valid remote transmitter as long as the ignition switch is not in RUN or START. The driver door is unlocked whenever the GEM detects a valid remote transmitter unlock transmission. All the doors are unlocked when the GEM detects a second valid remote transmitter unlock transmission within three seconds of the first transmission. All the doors are locked when the GEM detects a valid remote transmitter lock transmission. If the GEM detects a second valid remote transmitter lock transmission within three seconds of the first transmission, the doors will lock again, the horn will sound for 20 ms and the parking lamps will flash for 200 ms to indicate the doors are locked. If the GEM detects the driver or passenger door is ajar during the second lock transmission, the doors are locked again and the horn is sounded twice.