The battery on ours checked out fine and (knock on wood) the radio hasn't acted up in about a week now. Speaking with local Volvo mechanics they say that it's the radio itself and not a larger electrical problem.

Hello everyone - I'm new to the forum and hope someone can help. My wife has a 2005 S80 with the HU-650 radio. Recently it has started cycling between AM-FM & CD on it's own and we are at a loss as to why. I searched the forum and only found a posting in the S60 side where it was suggested that ...