Currently my alarm goes off as soon as I lock the doors so I have checked the boot and bonnet contacts, all look fine and I have checked the CCM under the pass side carpet and that is bone dry (never seen any water in its life).

BUT....... if I drive the car and then lock it the alarm WILL NOT sound until around a hour after I've locked it then it goes off every time I try to lock.

Could this be the battery on the car losing power or poss the battery that's in the alarm horn itself ( at least I think there's one in there)??

I've also checked all the interior light go off when when it locked en'all.

Passat 2001 Sport Saloon.