1980-1991 Mercedes S-Class models: A buyer’s overview

1991 Mercedes ASR snow tire control button

The snow tire button in the center top of this picture indicates that a 1991 S-class is equipped with optional ASR traction control.  (Photo credit: Sean Connor)

The snow tire button in the center top of this picture indicates that a 1991 S-class is equipped with optional ASR traction control. (Photo credit: Sean Connor)

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