I have a 2002 X5 w/CD player, no navigation. The CD player and multi info display will not work. All of the buttons light up, but no display or sound. I took the car to the local BMW dealer, they tested the factory am and said it is good and that the cd player or multi info display needed replaced. I have replaced both of them and I still have the same problem with the new pices. I am unsure of what to do now. Any info or suggestions would be great.