The 4Matic light has come on in a 1993 300E. The 4Matic was rebuilt less than 2 years ago. The car is new to me so I don''t have much of a clue as to what''s going on.

Optional Information:
1993 Mercedes-Benz 300E 4Matic 6 cylinder

Already Tried:
followed manual directions and parked car; moved service switch to position 2