Had a strange experience for the first time yesterday. Went to make a phone call, pressed Voice button, brought up the right screen, but did not seem to hear my voice. Went to FM, screen came up but could not get any stations to play. Went to USB screen where I have songs stored. Brought up song info but would not play. Other functions like Clock, PowerFlow were fine. I pulled over, turned off ignition, back on, no change. Later I tried again, left ignition off longer for a full reset, then it worked fine. Anyone else experience this or have any clue what the problem might be? Once in two months is not a big deal, but a surprise.