M-Class (W166) Produced 2012-2015

Buffeting at 45MPH

Old Apr 30, 2012 | 09:26 PM
  #1  
katiesdad7's Avatar
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2012 ML 350 BlueTec
Buffeting at 45MPH

Has anyone had a successful fix for this problem? Mine is going in again tomorrow for this and was hoping someone had it repaired so I can tell the dealer.

They still insist they never heard of this problem.
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Old Apr 30, 2012 | 09:34 PM
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YYZ-E55's Avatar
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MY17 E43 Matte Selenite/Macchiato Beige, MY16 GLE350d Tenorite/Crystal Grey, MY17 B250
What are the prerequisites? Sunroof fully open and all windows closed, or...?

Pano roof or standard sunroof?
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Old Apr 30, 2012 | 09:41 PM
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2020 GLE 450; 2023 BMW M2 Coupe
Originally Posted by YYZ-E55
What are the prerequisites? Sunroof fully open and all windows closed, or...?

Pano roof or standard sunroof?
As has been posted elsewhere, it is apparently with everything closed up and happens in a very short speed band aroujnd 45 mph. The description sounds like a sound pressure wave inside the cabin. Only some vehicles seem to be affected.

https://mbworld.org/forums/new-m-cla...tion-45-a.html

http://www.benzworld.org/forums/w166...ing-noise.html
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Old Apr 30, 2012 | 10:02 PM
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YYZ-E55's Avatar
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MY17 E43 Matte Selenite/Macchiato Beige, MY16 GLE350d Tenorite/Crystal Grey, MY17 B250
Crazy - I don't recall seeing those posts. I hope they get it fixed for you!
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Old May 10, 2012 | 11:01 PM
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2012 ML350
My initial thought was that it seemed like a build up of air pressure, but the two most recent times I kept it going for a bit and now am wondering if it's a low resonance problem, like maybe a bearing or something. The lower the frequency the less directional the sound is and the more it is simply felt rather than heard (I use to be a sound engineer and we'd sometimes get newbies to take a seat on a subwoofer for a chat and then put an 11 hz mod tone in it. Most lasted about 90 seconds before rushing to the can).
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Old May 11, 2012 | 08:43 AM
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2008 Honda CR-V, 2013 ML350 on order
Hope they fix this in MY2013
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Old May 11, 2012 | 03:53 PM
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2012 ML 350 BlueTec
Originally Posted by krazyvshank
Hope they fix this in MY2013
I doubt it considering MB doesn't even acknowledge it is a problem. According to MB it is "normal". So its reasonable to assume that they wouldn't fix something they don't consider broken.
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