S-Class (W221) 2007-2013: S 320 CDI, S 350, S 450, S 500, S 550, S 420 CDI, S 600

Vibration in Park, especially on the door when it's open

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Old 04-24-2010, 04:25 PM
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Exclamation Vibration in Park, especially on the door when it's open

I can feel rhythmic vibration when the transmission is in P and also in D albeit with less intensity. When the gear is in P rpm is higher than it would be if in D. Thought that's sort of weird too.

The vibration is felt stronger on the door with it open. Also it can be felt on the floor as well.

At the service center they replaced some sort of rubber on engine suspension but it hasn't helped at all. And it's very annoying when in stop and go traffic since the vibration is felt and makes an uncomfortable one. Any idea what could be wrong and what to ask for at the service center?

The car's a 08' 550 rear wheel drive.
Old 04-24-2010, 11:29 PM
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Would be normal for RPM to be less in Drive as that loads the engine some.. As for the vibration, Could it have a low speed miss on one cylinder?
Old 04-25-2010, 12:26 PM
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My first though would be a misfire. But the on board diagnostics should detect a misfire and turn on the check engine light the 2nd consecutive time it detected it. Has the light come on?
Old 05-07-2010, 03:10 PM
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Nope, no engine light came on.

Could a very subtle vibration be caused by engine misfire? Some people suggested it could be transmission mount.

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