2005 Chrysler 300 Radio changes modes
 

My 2006 Chrysler 300 Limited with Nav/Sat/Disc Radio changes from Sat to AM on its own. While driving, the system changes Mode from Sat to AM periodically and will go back to Sat Mode by pressing the Mode button. Unpredictable and not caused by bumps or vibration. Also have VES but not on when this happens.