I took my car in for oil change. When I got it, I noticed the little warning for the navigation screen was on and the radio was on a different channel but I just blew that off thinking someone had hit the wrong button when they reset the oil light. Then I would notice the clock was off and I'd have to reset it. For awhile it was only 1 or two times but now it's every time I shut off the car. The Navigation warning screen comes on, then, the radio defaults to FM radio and the clock resets itself...some random hour but the minutes stay the same. Well, it first comes on at 12:00 but after a few minutes, the REAL minutes comes back and the hour comes to some random hour. Oh, and the radio/navigation screen shows both the radio and the navigation (half screen).