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I have a 2004 Lincoln LS,disconnect the negative battery for 10 minutes,then connect cable back,when you open driver side door alarm will go off,insert key in ignition and alarm will go off.Get in car,lock all doors and windows,turn key to the right 8 times quickly,then doors will unlock,then quickly push any button on key fob.
possible -but all these fancy electronics are beyond the realms of most people and you need the factory to reset and diagnose the fault .even us mechanics have to admit defeat with faults like this and return vehicle to the dealer then charge for the time involved in taking and collecting the car ,take it straight to the dealer yourself
Depending if it is a aftermarket or a factory alarm, they should all have fuses that can be removed. By removing the fuse, you may lose your keyless entry option. Most aftermarket alarms have a siren that is usually mounted under the hood in the engine compartment area. I've seen where people have cut the wire going to the siren to disable it but keep the power going to the alarm system to keep the keyless entry still functional if it came with the alarm system. Factory alarms usually use the existing horn for the alarm. If that is the case, you might need someone who is experienced to disable the circuit so that the horn will not sound if alarm goes off but the horn will still be functional when needed. Hope this helps.
Is the alarm causing the horn to honk? If so, you need to figure out what is causing the alarm to trigger, which could be any number of things. Or, the panic module could be failing. It is least likely to be the horn ring unless the only way you can get the horn to stop is by "beating the horn button on the steering wheel".
If it is, then you can replace the parts for the horn button, but you will need to get an assembly manual for the vehicle. Be sure to disconnect the battery before attempting to remove the airbag module. If it goes off, then you risk injury, and, they are not cheap to replace.
My 2001 TD5 discovery has the same problem and this started in the last 18 months.
Normaly the car is parked in a locked garage, and the car is not locked.
The alarm does not go off during the day when parked anywhere even when parked for long periods.
When we are away camping in the bush or caravan parks, if I think of it I remove the "horn fuse" under the bonnet at night and replace this in the morning, if I dont do this the alarm does not go off every night, but I rather do this, than me and everyone at the camp site being woken up at 0300 hr'
Maybe it is the night temperature, ??