EugeneZ

Can anyone help please? Intermittently, when you start the car, the radio/cd has no sound but all of the display comes up, the front and rear parking sensors display but there`s no sound. Bluetooth for the phone is working, as the other party can hear me, but I can’t hear them. You run the car, turn it off for 5 minutes, come back and start it, all works again. Any ideas on what`s wrong? The car has the Blaupunkt RD4 radio/cd. (Exclusiv 3.0 V6 Twin-turbo diesel).