My 2008 E93 325i radio/CD player and front/rear parking sensors have all just suddenly stopped working at the same time so I assume the faults are linked. The radio background lights come on so the unit is obviously getting power - any ideas please - earlier this year the car had a new ECU, injectors, coil packs and hpp fuel pump - at a cost of over £4000.00 so I don't really want to take it back to BMW for diagnosis and a (probably) very expensive repair. Any help on this would be most welcome.

Thank you