For mine I plugged it in and the aux option appeared without any other intervention, this was my cable
https://www.ebay.ie/itm/Car-3-5MM-AU...72.m2749.l2649
For mine I plugged it in and the aux option appeared without any other intervention, this was my cable
https://www.ebay.ie/itm/Car-3-5MM-AU...72.m2749.l2649
All me beemers are gone.....for now.