Don't know if you realize that original 1992 S-class car owners filed & won Class-action law suit on problems with this car. MB also had to pay for all maint & repair items on these cars for 4/50. The 1992 models are to be avoided as many problems were design problems. Many of which you are finding out about. Seeems that this car was rushed to market.
MERCEDES BENZ MASTER GUILD TECHNICIAN
ASE MASTER TECHNICIAN
27 YEARS DEALER M.B. Shopforeman
190E 2.3 ITS RACECAR
1986 190E 16V