A few thngs, you have the new belt? I'll chk my 02 C240 to see if I am right in my description, but I won't be back to my computer till around 11:30 eastern time.
If you have the new belt and have Mercedes roadside assisstance come out, might they attach it?
also check out
www.mbklasse.com to see if it is discussed there - you'll have to sign in - easy and quick.
But I'll go chk my C240. I'll repost in a few hour with what I found. what you are describing sound different from my 1998 C that I described in my previous post.