Quote:
Originally Posted by raymond~
the did not recall it but the did issue a technical service bulletin covering multiple
years of the 210. check also MBWORLD as well as BENZWORLD's 210 section.
I've seen several successful fixes depending on origin of noise.
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You're referring to a WIS document, not a Service Bulletin. This document doesn't refer to a specific cause/correction. It's just a general guide to diagnosing the problem.
Since the 210 seat is very easy to remove, the first thing I would do would be to remove it and place it on a suitable work surface. Then I would tighten every single fastener that can be seen. If the noise goes away you're done. If not I would suspect that the seat adjuster (lower seat frame) will need to be replaced. I've replaced lots of them over the years. This was a fairly common problem on the 220 chassis MB's. I've even seen a few 221's with this issue, especially when the regular occupant of the problem seat is XXL.
I've never seen a seat fail in such a way as to pose a safety threat, but it can be quite annoying.