I have the same problem with my 2002 X5 3.0i
I just bought a 2002 X5 and have the same issue with the radio buttons, including the fact that most of the station preset buttons have been working only intermittently.
Does anyone have an explanation or a fix for this?
I also have an AM issue--although clearly the tuner is receiving AM stations, I can't hear any of them. The FM is working fine. Do they have separate amplifiers?