Knocking Noise Over Bumps Due to Worn Sway Bar Link Joints on Mercedes-Benz C55 AMG

Problem Description and Possible Solution

The sway bar end link joints may wear and cause a knocking noise over bumps. Loose or warn links should be replaced to correct this type of noise.

Problem Data
RepairPal Verified
Average mileage: 87,000 (87,000–87,000)
2 model years affected: 2005, 2006
3 people reported this problem
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Rubber boot split allowing water in that resulted in lubrication failure and eventual ball joint failure. Knocking sound from front as the sway bar traverses the neutral weight position.