Mercedes-Benz S420 Problem Report

Mercedes-Benz S420 Harsh Ride From Rear Due to Failed Dampening Actuator

(7 reports)

Vehicles with automatic level control that ride harshly in the rear (no give in the suspension) may have one or both dampening actuators which have failed. It is commonly recommended the actuators be replaced in pairs.

very hard ride and thump sound still have not fixed -
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