2017 C300 4Matic - vibration / pulsation (mostly felt in steering wheel)!! - Mercedes-Benz Forum
 
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post #1 of 3 (permalink) Old 03-26-2019, 04:43 AM Thread Starter
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2017 C300 4Matic - vibration / pulsation (mostly felt in steering wheel)!!

My C300 vibrates that is mostly felt in the steering wheel around 60mph. It becomes much more noticeable at 70+mph. Itís still under warranty and I have taken it to the local MB dealership and they have spent weeks trying to figure out what is causing the problem. They have replaced quite a few things, balanced and aligned the tires, tried to put different brand tires on (OME - Pirelli), among other things. Iíve driven the car with the shop foreman a few times and he agrees, there is definitely a vibration that pulses through the car and felt mostly in the steering wheel but can also be felt through the seats. After the dealership couldnít resolve the issue MB had their ďadvancedĒ guy from the region weigh in on it and had the mechanics do a few more things but this didnít do anything to resolve the issue. Now that they canít figure out what the issue is, MB is saying, ďit is operating as designedĒ and they have essentially washed their hands of my car.
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post #2 of 3 (permalink) Old 03-26-2019, 08:43 AM
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Vehicle: 2008 AMG CLK63 Conv., 2012 R350 4-Matic, Wife's 2015 C300 sedan
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If you've hit a curb or a big pothole you could have bent something, possibly a control arm, less possibly a drive shaft. Not easy to spot visually. Only way to check a drive shaft, for example, is to put a dial gauge on a magnetic base against the shaft and see how much the needle moves back and forth as the shaft is rotated slowly by hand. Not unusual for a bona fide mechanical engineer, but probably a bit beyond the average grease-monkey. You could check for run-out on the brake rotor or its mounting on either side too in much the same way.

Even more unlikely is that you've somehow bend the entire frame.

My wife's 2015 C300 RWD certainly doesn't have any vibration and it's clearly BS that noticeable vibration is within limits (unless we're talking princess and the pea type stuff here).

"Semper In excretio, solum profundum variat" - unknown
They called me mad, and I called them mad, and damn them, they outvoted me" - Nathaniel Lee
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post #3 of 3 (permalink) Old 03-27-2019, 08:37 AM Thread Starter
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2017 C300 4Matic - vibration / pulsation (mostly felt in steering wheel)!!

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My C300 vibrates that is mostly felt in the steering wheel around 60mph. It becomes much more noticeable at 70+mph. Itís still under warranty and I have taken it to the local MB dealership and they have spent weeks trying to figure out what is causing the problem. They have replaced quite a few things, balanced and aligned the tires, tried to put different brand tires on (OME - Pirelli), among other things. Sarkari Result Pnr Status Showbox Iíve driven the car with the shop foreman a few times and he agrees, there is definitely a vibration that pulses through the car and felt mostly in the steering wheel but can also be felt through the seats. After the dealership couldnít resolve the issue MB had their ďadvancedĒ guy from the region weigh in on it and had the mechanics do a few more things but this didnít do anything to resolve the issue. Now that they canít figure out what the issue is, MB is saying, ďit is operating as designedĒ and they have essentially washed their hands of my car.
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