Kind of sounds like a computer thing maybe. When I was having problems with my icelink this kind of stuff was happening. Lights would come on and stay on even though they were switched off, display and instrument panel goes dead, etc. The starting thing makes it sound more sevre though. Was the bluetooth kit hooked in all that time? I see you live in Michigan, and it's been rediculously cold recently, cold doesn't seem to do any favors for electronics in these cars. Every time I left my iPod plugged into my car over night when it was cold out, this kind of stuff happened the next day. Hope you figure it out, having an awesome car sitting in your garage isn't fun!