On the recommendation of Vinnie in Las Vegas, I took the 1997 C230 to G & G ********. They found the differential speed sensor completely clogged. They also had to change the ABS sensor and changed the differential fluid. All I can say is I love these guys for the rapid repair and extremely fair price. I was billed $261 and the car was beautifully detailed when I picked it up (Right at the time promised) All I can say is I found an independent Mercedes shop that I know will not try to bilk me out of my money just because of the Mercedes name. They have a customer for life.