My alarm in my 2002 beetle keeps randomly going off? How do I fix this? Please say it's easy. I just spent $600 to fix the water pump and plan on selling it in the next month, so I really don't want nor do I have a lot of money to put into it.

Not sure what type of alarm you have but a factory fitted immobilisor wouldnt cause this so i assume that its an after market type of alarm which always cause problems ,if its this type of alarm then it should have a key operated switch on the alarm to turn it off.Cannot seem to quite get my head around your cost of 600 dollars to change a water pump on this vehicle but here in spain it would cost about 80euros for the pump 12 euros for 5 litrs of pure antifreeze and depending on the garage i would estimate about 150 euros top because it is only3 hrs work to change the pump and that includes a coffee break.