I've read somewhere that the S6 RNS-E units can be programed to either use Gala or Can Bus. If this is the case it would be likely the S4 units would have the same programing possibility. I am asking because the S4 units faceplate fits my application (Audi A8) and it would be great if Vag-Com could make the S4 unit work as the S6 specific units do. Any help in answering this would deeply be appreciated.
TIA
TIA