I have a '99 SLK, and as I was driving the other day while listening to a CD, the radio suddenly came on. When I selected CD, the screen that normally displays which CD and track are playing said "No CD Player."
Something similar happened about a year ago, and it fixed itself when I removed the CD cartridge and reinserted it. This time, however, the error message still displayed.
Has anyone else had a similar problem? Is there a simple fix that I haven't thought of, or does it need professional help?