I have the same issue, still not resolved. Originally though, my alarm went off and couldn't be turned off with the key. It even went off while driving. I brought it to the place I bought it and they replaced the siren (I assume, since I now have the chirp indicative of the newer sirens). However, the alarm will still go off at random on me but at least now I can shut it off. It also does not go off if I haven't locked the door, so at least there is a little bit of method to the madness. I've also replaced the key fob batteries just to be safe... And my battery checked out fine..