One problem related to brake disc rotor has been reported for the 2003 Mercedes Benz S Class. The most recently reported issues are listed below.
2003 s5004matic by daimler Chrysler. At 9000 miles had rear rotors warped by parking brake. At 11000 miles had front rotors warped by unknown reasons. At 11500 miles shimmy in steering wheel cannot be fixed. Dealer has tried to fix it on 4 occasions. Unable to do so.