My roommate and I are having the same issue where our auxiliary ports. We tested 3 different cables on 2 Toyotas and a VW. It looks like there is a issue with how the ports are grounded in the Toyotas, is this a software or hardware issue? In Toyotas the phone could not recognize if it was connected to headphones, auxilary or not connect at all. It would constantly switch between the 3. And end up often choosing to play sound through the phone speakers. The VW had no issues.
Any fixes or suggestions?
Any fixes or suggestions?