Hi,

I just both 2001 ML320 with 27000 mile,
it has little noises on the side doors when I listen music, and also more noises on the back door when I drive.
I went the service 4 times but they couldn't find the noises,
does anyone have the same problems?

thank you.

 

you got to open the door lining and check inside for some loose insulation, clips, screws, and contacts.
better if you record the sound and let us hear it.