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Horn/Alarm Goes Off after Disconnecting Battery
I have a 2002 F350 7.3L truck.
I disconnected the battery negative plugs while doing work on the engine (new glow plugs and UVCH).
I reconnected the battery plugs after completing the work and noticed the interior lights came on and the doors automatically locked.
My key remote didn't work.
If I open the door with the key the alarm/horn goes off.
It seems the truck has defaulted to some kind of theft/stolen mode?
Is there a way to reset the alarm without taking it to the dealer?