retrofit a4

  1. J

    RNS-E code issues?

    Hello, I have an A4 B7 Quatttro V6. I have removed the old Symphony II radio and put in an RNS-E unit, and used a wiring harness I bought from a company in Germany. The radio works but I think I have CANBUS problems because, no radio info is displayed on the instrument panel as it used to, and...