MFAY53

I have a 2019 CLS53. It has a very annoying medium/high-pitched buzzy rattle coming from somewhere in the driver’s door. It makes the noise when the car hits a bump and makes it consistently when on a rough piece of road. M-B has had the door panel off and wasn’t able to isolate and eliminate it. Any similar experience or solutions?

thanks.

Photophiend

Same problem here