I've got an audi tt and the alarm keeps being triggered by something. all the doors, boonet,boot,windows and roof are closed what could it be?

 

bad sensor. Unplug them one by one?

 

not in the right place as its not a forum issue ( TT area ) or general tech, but I have a few ideas - rusted hood switch causing bad ground/ interior sensors too high and picking flys up im sure there is a switch to turn them off when you leave say a dog/child/ mother in law in the car