I have a 1998 Mercedes C240 W202 Elegance sedan. Yesterday I took it on a freeway for the first time in some 4 months. The engine was at operating temperature, and no warning lights etc. were showing. When I was travelling at 100kph or more, there was a light vibration being felt in the front floor pan (both driver and passenger sides). Reduce speed to under 100kph and the vibration disappears. The car has done 215K's and I am the second owner at 212K's. The service book seems to have been kept up to date, but I wonder about the driveshaft flex joints. Or is there some thing else causing this vibration. There is no vibration felt through the steering wheel. Any help would be greatly appreciated. Many thanks.

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Profile picture for user MercedesMedic

These symptoms are often caused by an issue with a rear wheel. I would check for a bent wheel  balance them and see if that helps before replacing more expensive parts. 

Profile picture for user robertwhitting
Thank you. Actually I did think about that, because when I checked all wheels for tyre pressure, I did notice that one of the rear wheels did not have any lead balance weight on the rim. I thought that was unusual. They're pretty new tyres, so I'll take the car back to the dealer.
Profile picture for user abusufyan
That is wonderful. I am so happy that you got it done. Please keep visiting this website
Profile picture for user CaseyKC

Did you managed to get it fixed? Usually vibration at high speed is caused by tyre. It can be...

  • Improper tyre pressure (One side is inflated than more the other)
  • Uneven tyre wear
  • Bad wheel balancing

But if that is not the case, you can consider getting your half shaft / drive axle checked too. Contrary to most beliefs,they can cause vibration at high speed too. You can refer to the top 3 drive shaft problems article.

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