Thread: Possible causes for alarm going off randomly

Originally Posted by WhiteD3

when it goes off at work the 2 other D3's will also go off. Not at the same instance but within a few seconds of each other. Disarm one and they all stop.

I think it could be a false alarm in one that sets off the others.

Just being watchdogs I reckon, or a good looking lady D3 went past, but seriously I have had similar issue and bonnet sensor was replaced. Have also had constant niggles around the central locking with fuel flap not locking etc

Originally Posted by outasight

Hi folks,

As it says, I'm looking for other's ideas on possible causes for the "alarm"(car horn & hazards)going off twice lately - totally at random. No windows down, no wind to speak of, no spiders inside known(can't say for certain about a fly though).

My theory is that the car was parked on sloping ground one time, and uneven ground the other. Both were a similar amount of time, perhaps 5-10 minutes, after deadlocking(the normal habit way of locking). I reckon it may be caused by the height suddenly dropping, as we have noted they can do without warning after some time stopped(running or not!).

Have others experienced this too?

Regards,

Les.

A dealer can check the alarm trigger history. Chances are it will be the bonnet switch as previously mentioned.