E-Class (W211) 2003-2009

vibration in reverse e320 CDI

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Old Nov 11, 2015 | 04:05 PM
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05 mercedes e320 cdi
vibration in reverse e320 CDI

I have the 06 e320 cdi with 415000 miles. I have recently replaced both engine mounts and the trans mount. I also changed the trans fluid and filter. prior to changing the fluid and after replacing the engine mounts, I noticed a vibration when placing the car in reverse. It is mild but noticeable. I don't remember it before replacing the MM yet one WAS broken and the other was old. Just wondering if anyone has thoughts.
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Old Nov 11, 2015 | 04:32 PM
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05 mercedes e320 cdi
Just add also, I just got it warmed up to 80 degrees and when it is warmed up the vibration is gone so only happens when cold.
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Old Nov 11, 2015 | 06:29 PM
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2006 E320 CDI
Are you using "C" or "S" mode for the transmission? Perhaps try the other and see if it makes a difference. "C" mode makes for much taller gearing in reverse.
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Old Nov 11, 2015 | 07:27 PM
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05 mercedes e320 cdi
Well the c/s light that is suppose to be on the dash is not there anymore. Both that and the Park/drive light on on the left side of the mileage went out last week sometime but I think it is S mode. I understand under sport you get 1st gear and Higher rpm shift and in c you start out in 2nd and get softer shifts. Ill switch it and see if it makes a difference.
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Old Nov 16, 2015 | 02:30 PM
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THE C350
I have heard that the engine mounts are keyed and if you don't put them in exactly right you can get vibrations. Also what brand of mounts did you use?

I just had to do engine mounts in my E320 due to a severe vibration (thought engine was falling out) in reverse and a small one in tight corners.
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Old Nov 27, 2015 | 05:29 PM
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05 mercedes e320 cdi
just as a follow up, I went ahead and replaced the trans mount though it looked like it had been recently replaced. That took care of the issue.
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Old Nov 27, 2015 | 10:02 PM
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2006 E320 CDI
Well....starting the thread indicating you had already just replaced the engine and transmission mounts.....curve ball! ;~)
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Old Nov 27, 2015 | 10:17 PM
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05 mercedes e320 cdi
The trans mount had recently been replaced, which was why I started the thread indicating it had recently been replaced. Semantics as to whom actually did the deed. It was new but garbage sooooooo I replaced it with a quality mount and problem solved. Jeez
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