I am guessing the car has a six disk.. When I look for the CD player I hit a button on the console and the face flips down and there is a space for a CD but the navigation CD is in there.. Please help?

THANKS
I believe there is a changer in the car somewhere but where is it?!?!? Do they come standard with one? I am sure a ML500 would have a CD player that comes with the car.

yeah more than likely it either has a changer, or you need to install one. There was a similar problem with the civics of i believe 97-99, i couldnt find the cd player on my aunts car, and it was becuase they basically forced you to install a changer if you didnt purchase it with the car when you bought it new. That is if you didnt want anyone to tear apart your dash to install a cd deck that really wouldnt match anything in the car. But to answer your question, yeah definatly probably a cd changer solution is required.