Today's issue.... Sat Nav no longer working.   Car had been running to 20 mins...   Managed to capture it all on video for the dealer in the morning. showing it not loading but more importantly proving how i get it working again.   So this has occurred a few times now..  The workaround is as simple as popping the SD card out and reinserting it.(while engine and ignition off.) .. Sat nav then springs into life within a few seconds.   (Managed to capture this on video