Here's something that was a little queer I discovered (pun intended). When I leave my interior light on by accident, my alarm will go off at random times like you've mentioned. Once I clicked off the overhead light, problem solved!

Brchan

 

hmm... usually my chimer goes off if the light's on so I shut that off.

For the past few nights I have been pushing each lock down rather than locking it with the remote and it has been quiet. at the dealer i work at when this one cool tech gets a few minutes he's gonna scan it for me