I posted this in Audio with no luck so I'm trying here. I have a 2012 Expedition with the Nav system stereo. Most of the time when I start it, usually with the remote start, it will be playing the ipod which is what I exclusively listen to. Sometimes the radio will be on instead of the ipod but i can use the media button to select the ipod and it plays. Sometimes the media button will go to the media page but the Source button goes from Line in to BTST and won't find the USB. Other times the radio is on and the media button won't even change the screen. I live where there are only a few crappy radio stations which is why I only use the ipod even though I do have the Sirius/XM as well. Is there anyone else that has similar issues? Is there some kind of software update to the stereo?