AFAIK full SDS (that controls the sat nav as well as the phone) was never offered as an option on the RS4, but phone SDS comes whenever the phone kit is fitted.mobblers wrote:Sorry for resurrecting an old thread but I have recently started looking for an RS4 and one of the things I would like to get if I can is full SDS control of the RNS-E. I know SDS can be retrofitted but was it available as an option from new? I don't remember seeing it listed in any of the adverts I have been looking at so I'm assuning it wasn't available but I would be grateful if one of the knowledgeable chaps on here could confirm if that's the case.
Retrofitting full SDS isn't just a case of doing the SDS hack, you also need to rewire the phone microphone to route it via the RNS-E.