Hi guys , Have decided to do an aux point diy on my a4 avant I have the concert stereo and have made up the aux point wiring but have struck an issue, when I hold down the cd button to select the cd changer that I'm connecting the aux wires to it says No CDC
Does this mean I need to get it coded using vag.com or do I have to have something connected to the aux for it to recognize the ext source ?
Does this mean I need to get it coded using vag.com or do I have to have something connected to the aux for it to recognize the ext source ?