I took in my 2002 GLE with the 6cd changer (I know its junk ill swap it out in the future) since it wouldnt play cds properly. It would skip like mad. So it get it back later in the day and the face is exactly the same but the cd's play. Did they fix just the cd changer part inside? Should they have swapped the whole thing out? Its under warrenty but I just wondered?