Any idea what might be causing my son's car alarm to go off when parked for the night ? It has happened for the past three nights at about the same time.
Possibly a dodgy sensor on one of the doors, bonnet or boot. How old is the battery on this vehicle ?, sometimes a battery that's on the way out can cause the alarm to act this way.
More than likely a faulty sensor/switch, I had a passat a few years ago that had the same issue in the end took it to VW stealer and they diagnosed the boot switch was faulty. Cost a bit but it saved a lot of messing about trying to eliminate the problem. Check the carpets for damp and if you find an ingress of water that may be he area to focus on. Good luck