On the display of the Blaupunkt MP35 appears : CD ERROR. it's not possible to play cd or MP3. the radio-stations play normal. how can I repear or let it repear? In the shop, they said: we don't repear, it's an old radio. buy a new one. Thanks!

SOURCE: PHONE disply on our player

another suggestion, I am not sure if you can do it (pull the head unite out) , but there is a Phone wire. (not sure of the color i think its either white or green) on the back of the head unit. if this is a naked wire (since you bought the car used it may be) and it grounds it will cause the player to go into phone mute mode>> check that out and tape up the wire if its exposed.