How do you reset the theft alarm on a Ford Expedition?
If you are reseting a factory alarm...lock and unlock the drivers door with the key.
If you don't know the code look under the dash driver side in left corner there should be a black cover with a sticker with a code on it 6 numbers that is the factory code.
Is your problem with the PATS (Passive Anti-Theft System) (encoded key) or the Anti theft alarm system? If you're talking about the PATS system, the answer to your question is NO. The PCM must get the PATS signal or it does not allow the engine to start. It would not be much of a theft deterent if it could be bypassed. For the Anti-Theft Alarm System, do the following: 1. Insert the key into the…
if your anti-theft system is sounding (horn honking/lights flashing) you press the panic button on your key fob to shut it off. If your anti-theft system is armed ( but not triggered ) it is disarmed when you unlock the door(s) using your unlock button on your key fob, the key pad on the driver's door, or your key.
How to permanently disable alarm system? You will need to find the alarm module. Likely, under the dash on the driver's side. Once you find the alarm module you should be able to unplug it. I'm not familiar with a Code alarm but the aftermarkets ones are all pretty much alike. The modules are usually black, about 3.5 inches square and about an inch thick. Hope this helps