4.6L (1996-2004 Modular) Mustang Technical discussions on 1996-2004 4.6 Liter Modular Motors (2V and 4V) within.

Key FOB quit working on me, can't program

Old 10-04-2013, 06:15 AM
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razor9546
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Default Key FOB quit working on me, can't program

okay so this is about the third time this happened, my key fob just stopped working, i tried to reprogram it and it wouldn't work. i put in a new battery and still nothing, when i tried to program it nothing. i even tried to original key fob i got with the car, i don't use it because the plastic is broken and doesn't stay on a key chain, for some odd reason that one no longer works now. i even disconnected the battery from the car for 15 minutes and tired to re program them and still nothing. when i program it i turn the key 8 times until the doors lock and unlock so im pretty sure im doing it right.

anyone know whats up?
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Old 10-04-2013, 07:09 AM
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0331
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1. Close all the vehicle doors.
2. Insert the ignition key into the ignition..
3. Press and hold the door unlock switch.
4. While holding the door lock switch in the unlock position, cycle the ignition ON, OFF, ON, OFF.
5. Release the door unlock switch. The doors will lock and unlock to confirm the program mode.
6. Press and hold the LOCK button and the UNLOCK button simultaneously on one transmitter. After a delay of approximately 15 seconds , the doors will lock and unlock to confirm the programming of that transmitter.
7. Repeat the previous step to program up to four transmitters.
8. Turn the ignition switch to the RUN position in order to exit the keyless entry transmitter programming mode.
9. Operate the transmitter functions in order to verify correct system operation.

If it is still not working you might need to find someone with a scan tool.
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Old 10-04-2013, 08:08 AM
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Originally Posted by 0331
1. Close all the vehicle doors.
2. Insert the ignition key into the ignition..
3. Press and hold the door unlock switch.
4. While holding the door lock switch in the unlock position, cycle the ignition ON, OFF, ON, OFF.
5. Release the door unlock switch. The doors will lock and unlock to confirm the program mode.
6. Press and hold the LOCK button and the UNLOCK button simultaneously on one transmitter. After a delay of approximately 15 seconds , the doors will lock and unlock to confirm the programming of that transmitter.
7. Repeat the previous step to program up to four transmitters.
8. Turn the ignition switch to the RUN position in order to exit the keyless entry transmitter programming mode.
9. Operate the transmitter functions in order to verify correct system operation.

If it is still not working you might need to find someone with a scan tool.
Nothing worked. Just tried it again and I know how to program the fobs I've done it before and it worked fine but for some reason it won't reconzie either if them and the battery's are good. I don't get it. It just was working yesterday and neither of them will work now power locks still work fine so.
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Old 10-04-2013, 10:42 AM
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Check the fuse?
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