Hello dear community, maybe you can help here more than with the Volvo dealer: The radio, parking aid and the display of the infotainment system have failed. The display is black, nothing works anymore. What still works are the other controls of the center console for ventilation etc. The reading of the friendly one has ejected the following error codes: CEM-B1C8414 (short circuit rear window) CEM-U015600 DIM-U015600 CCM-U015600 Is there a best-known problem of the V40 with the CEM, how can a free workshop help me with the troubleshooting here or can I go to the search myself? Thank you for input!