ive found its a more squeaky rattle, and its from where the top of the back edge of the door meets the seal when its closed. as horrible as it sounds, try rubbing some saliva on it before you close the door, it works for me as a temporary fix but am looking to find a way of softening up the seal again.
p.s - i only resorted to the saliva as with the 4 hour commute i am doing at the moment the noise in my ear was driving me insane!
I hear the same but it goes away if I slightly lower the driver's window from it's full up position. It's definitely a metal rattle, not loud, but a bit annoying. I'm thinking it comes from the mechanism that opens and closes the window.
BenzWorld.org forum is one of the largest Mercedes-Benz owner websites offering the most comprehensive collection of Mercedes-Benz information anywhere in the world. The site includes MB Forums, News, Galleries, Publications, Classifieds, Events and much more!