My Prius has the USB and Aux port. When I plug in my Iphone it doesn't play any music. And my prius doesn't show up anything also. Do I need to get that adaptor and hook it up behind my navi deck to get it to work?
I would run by the Dealer (Did you get it in Plano or Lewisville?). I don't have a factory Nav, but my Advent Nav system required a cable plugged into the back of the head.