Took my 04 into the dealership Friday for some routine maintence. Got it back on Monday. Didn't really drive it till today. A friend noticed my lights under the rear view mirror were on. 15 mins later I go out and find no lights on. Later on I drove it to get subway. When I came out I saw they were on. When I started the car they stayed on the entire drive on even when I push the on/off buttons. I unplugged the neg battery for 10 mins, plugged back in and lights still on. I'm going to unplug again and leave it off over night. Any ideas on what happened?