Knocking Noise Over Bumps Due to Worn Sway Bar Link Joints on Mercedes-Benz C240

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: 100,830 (41,000–230,000)
5 model years affected: 2001, 2002, 2003, 2004, more2005
31 people reported this problem
12 people shared problem details
major knocking over bumps at the front end
noise in rear after riding over road ruts or bumps
C240 4-matic wagon. Clunking or knocking sound coming from rear when going over rough road surface or small bumps. Not noticeable at higher speeds.
When driving over bumps at low speeds, I hear a squeaking from under the car. Still has not been addresses. Any clues to the problem and cost of repair?
kocking in front of car when going over bumps. link for sway bar was broken and replaced. it solved the problem.
Rear Knocking when going over bumps
Identical problem,
suspension knocks when going over bumps. car has done it since I bought it at 120000 miles.
Asked our mechanic to check the sway bar joints and sure enough, they were broken and needed to be replaced. Car rides a bit smoother now they've been fixed.
sway bar worn. replaced and all is good.
noise on front passenger side when encounter bums. Was told it was sway bar end broken
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