Quote:
Originally Posted by smok3y
Just bought this 94 S500 . . . the check engine light comes on, I check codes and get 6, 9 & 18 . . .
Thanks Mike
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Check out my Mercedes web page esp Menu#6 to decipher the Diagnostic Module (DM). DM #6 is the "badie" ... could mean a new ETA, Menu#24.
DM #9 = IAT sensor ...could be dirty or not there?? Clean with brake cleaner.
DM #18= probably a vacuum leak someplace ???
Reset all codes and drive awhile; see what comes back.