Okay, this is really weird and I'd appreciate any information. Tonight, as I got into my car, the horn started going off. I thought it was weird because it's the first time that started happening. I thought that if I started the car, it would stop the horn but it didn't. About 3-4 minutes after I start driving, it suddenly shuts off. It only goes off when I open either one of the doors; so I had to crawl out of the hatch when I got home because I didn't want to wake the neighbors.