I have had intermittent radio operation at times ever since collection. My B9 S4 certainly does not receive DAB signals as well as my previous B8.5 S4, it can loose signal two or three times on a local journey when my B8.5 never lost signal anywhere! This seems to happen when on DAB and DAB/FM, I thought it should switch to FM if the DAB signal is lost? However, the radio also sometimes stops although a signal is still shown, this normally happens when I need to concentrate on driving, but I finally tried changing to the next station which worked and then back to the original station which also then worked. Previously I've changed to SD card which works, but changing back to radio normally didn't work. I can just imagine the response I'll get if I take it into my local dealer! Anyone had anything similar, or any ideas?