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: 98,278 (41,000–230,000)
5 model years affected: 2001, 2002, 2003, 2004, more2005
34 people reported this problem
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Viewing 1 - 15 of 15 problem details
major knocking over bumps at the front end
2004 Mercedes-Benz C240 41,000 mi,
noise in rear after riding over road ruts or bumps
2005 Mercedes-Benz C240 75,000 mi,
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.
2002 Mercedes-Benz C240 72,212 mi,
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?
Rear Knocking when going over bumps
kocking in front of car when going over bumps. link for sway bar was broken and replaced. it solved the problem.
Same type of issue,even on flat roads, had cat checked, new brake pads, sway bar end links checked, still there, could it be from wrong brake pads just installed " did not turn rotors"... Driving me nuts.... Only on hot car after driven for a while
2003 Mercedes-Benz C240 72,400 mi,
Had sway bar links checked, along with cat converter, and new brake pads... Noise is still present after car has been driven... Even on flat new paved road, I still hear this clicking/loose sound from with under car or front end... No one can find it! Driving me crazy..... Rick in N. C.
2001 Mercedes-Benz C240 99,000 mi,
Rear driver sway bar links Only knocks over bumps
2001 Mercedes-Benz C240 80,000 mi,
Identical problem,
2001 Mercedes-Benz C240 120,000 mi,
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.
2002 Mercedes-Benz C240 65,000 mi,
have not fix
2003 Mercedes-Benz C240 65,000 mi,
sway bar worn. replaced and all is good.
2002 Mercedes-Benz C240 62,000 mi,
noise on front passenger side when encounter bums. Was told it was sway bar end broken