s550 vibrating when accelrating
Junior Member
Joined: Dec 2010
Posts: 33
Likes: 1
2012 S350 Bluetec
I 2nd checking the engine mounts (and maybe transmission mounts) before you try anything else. Mine was vibrating at idle and at acceleration and the dealer replaced the engine mounts.
Of course my W221 is a diesel so engine vibration at two other dealers was "vehicle performing as designed" even though I told them having owned two other Mercedes diesels that this was not normal. I insisted it be done this time and I was told after the job at least one had ruptured. I was surprised considering my S350 is a 2012 with less than 40K miles but I guess MB still had not quite worked out this issue by late 2011, when my car was made.
No more vibration at idle or acceleration but I still get get a little vibration when downshifting, which I think means the dealer should have done the trans mounts as well...but didn't.
Of course my W221 is a diesel so engine vibration at two other dealers was "vehicle performing as designed" even though I told them having owned two other Mercedes diesels that this was not normal. I insisted it be done this time and I was told after the job at least one had ruptured. I was surprised considering my S350 is a 2012 with less than 40K miles but I guess MB still had not quite worked out this issue by late 2011, when my car was made.
No more vibration at idle or acceleration but I still get get a little vibration when downshifting, which I think means the dealer should have done the trans mounts as well...but didn't.
