Drove to work today, worked fine. About an hour later went to get breakfast, 430N will not even start up. I turned the jeep on and off 4 or 5 times, never even tried to start up. Drove to 10 miles, nothing. Came back to work, on and off again....nothing. Everything else on the dash works but the radio/nav. Any suggestions before I call the dealership? I do have a lockpic, guess I should take that off before I go in...HELP!!!