Terryvision said:Remove the head unit, then remove the fascia plate & buttons, spray the circuit board with electrical lubricant, refit and I bet it works! A mate of mine had the entire right side buttons not working, I did the repair and it worked, there was lots of corrosion on the circuit board!
Worth a go.... If you local to Brighton I can have a go for you!
Terry
Terryvision said:Just found the post: http://www.z4-forum.com/forum/viewtopic.php?t=15931