Really strange deal. I have my D3 in an 05 Hummer H2. The D3 sound source will turn off, give the audible beep, and display "off" in the lower left corner of the display. Then a few minutes later I hear the audible beep for on, and the source will turn back on. This happens when I am playing the changer and/or the ipod. Which ever source I am listening to will come back on exactly where it left off, but may take a few minutes to do so. If I have the map displayed it will continue to work, but the sound source just turns off. I thought the unit might just be deffective, so I had it rep