Hi,

I have just bought a B6 Audi S4 fitted with the double DIN Symphony-II head unit. The car doesn't have the multifunction steering wheel to allow the radio to be controlled and I miss this ability. I am looking for an interface box that will allow me to plug in the Sony RM-X4S steering column remote control and have that control the Audi head unit via the CAN bus. Does such a device exist ?

I have found plenty of devices that will allow the Audi steering wheel controls to operate an aftermarket head unit, but so far I haven't found anything to allow the opposite control.

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Glenn