Annoying rattle/squeak in right side passenger compartment
We just had transmission work done at a local Mercedes dealer and while there we asked then to find and repair the sound problem as well.
In the shop the passenger door panel and rear quarter panel cover were removed. Road test revealed the noise noticeably louder with panels removed. Both left and right window regulators were found to be loose but the sound did not change after tightening. Remaining components were all secure. The technician believed the noise was similar to metal rubbing (similar to a broken spot weld). He recommended a body shop for further investigation.
I'm not sure that a broken spot weld is the cause. Any other suggestions?


