I've done some searching and found some similar topics, but no solutions specifically for an '08 JK.
For the last 5 or 6 months my factory alarm has been going off at random times when it's armed, usually in the middle of the night. I'm pretty sure our neighbors are getting pissed (as am I).
I found a TSB for 2011s (http://www.wk2jeeps.com/tsb/tsb_wk2_0805311.pdf
), but not specifically for 2008. The TSB seems to describe the issue I'm having, so I took the Jeep and the TSB to the dealership last week. (They have never heard of such an issue.) After plugging the Jeep into their computer, they said there is no updates needed. They also said, however, that the "Last VTA Trigger" was indicating the right rear door was causing the alarm to sound (exactly like the TSB stated it would). They, of course, suggested to start ripping the right rear door apart to investigate the door hatch. I told them to just try a reflash instead, so they did. Since then, the alarm has gone off yet a few more times.
Any advise would be much appreciated!!