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

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.

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Average mileage: 87,000 (87,000–87,000)
2 model years affected: 2005, 2006
3 people reported this problem
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problem details
2005 Mercedes-Benz C55 AMG 87,000 mi,
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.