I found this thread because I've been trying to get my radio functioning. I definitely suffered from the "wet amplifier" problem that people have written about. I have now replaced the Amp, both antenna modules in the back, and the MID.

The original symptoms were that I was only getting FM stations, though things got progressively worse I believe due to the wet amplifier.

The symptoms now are that the MID illuminates ("red" buttons) but no display, and the MID does not control anything.

The radio stays on at all times, but I can only change the stations and volume from the steering wheel. Prior to replacing the Amp, the radio would go off about 60 seconds after starting the engine.

As far as I can tell, the only part of the stereo system that I have not replaced is the CD changer... though the CD changer is illuminated, and it does play a CD when inserted. I guess I could have a bad wiring harness is a possibility.

The biggest problem is that the MID is not functioning. I purchased the MID refurbished from a seller on ebay They guarantee that the problem is not with the MID, and have offered to take it back. They also suggested disconnecting the 3 plugs "behind the instrument cluster" to help troubleshoot. I have to look into this some more, but if anyone has details on this I'd appreciate it.

I guess I could now *try* to replace the CD changer and see if that helps things. If I completely remove the MID, the stereo continues to play. In other words, having the MID connected or disconnected gives the same end result.

I have checked all fuses... they are fine. I have disconnected the battery for 30+ minutes and then reconnected. I read somewhere that the Amp needs to be programmed depending on whether the car has Nav or not (I do not have Nav). What would the symptoms be if the Amp were not correctly programmed?

This is all on a 2001 X5. I wanted to give as much info as possible.