Date registered: Oct 2007
Vehicle: 1998 c230 170K
Location: Exit 98, New Jersey, U.S.
Mentioned: 1 Post(s)
Quoted: 9 Post(s)
I bought the biltsteins a few years ago, quite happy with them, a bit more stiff than the original type. I have not had Sach so don't know, some people prefer one over the other.
Would try to clean the connections with electrical contact cleaner.
The black module is similiar to the one on my car the silver colored one is the one you may have. B