Just an update on my problem with my S4 starter solinoid click, took the Mog to Allon Whites to be booked in for repair. Chatting to Phil their who told me that he had recently heard that some S4 Aero's suffer from this problem and that it could be the starter switch contacts dirty. Cleaned the switch and hay presto Mog starts first time and every time now. I cannot praise Phil of Allon Whites enough, as they possably saved me many pounds.Must use the Mog more.