GL Class (X166) 2013-2015 after facelift became GLS (X166)

humming sound while driving Over 60MPH

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Old Oct 16, 2023 | 09:58 AM
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GL550
humming sound while driving Over 60MPH

2015 Mercedes GL550. Has anyone gotten this sound while driving? I get it almost every day, it also depends on the weather outside. It merges in the middle of the Car, if sat in the driver's seat, I can hear it on my right, if sat in the passenger, I hear it on the left. I have covered any gaps in the side mirrors and the door, but the humming is still there.

Here is the URL:

If you have any suggestions on how to solve it, please do comment.

Thanks

Last edited by Rob.P; Oct 16, 2023 at 02:32 PM.
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Old Oct 16, 2023 | 11:54 PM
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From: In the Shadow of the Tetons
2013 ML350 Bluetec
My friend's '05 Ford F150 does that (rarely). Seems to come from the windshield/hood area, like blowing across a bottle top.
When did this start on yours?
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Old Oct 17, 2023 | 07:38 AM
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Thanks for the reply. It started last year, but I noticed that it didnt happen during winter weather. Somehow it stops. Throughout Summer it was just crazy.
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Old Oct 17, 2023 | 09:01 AM
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2014 GL450, 1992 W140 300SD, 1993 W140 300SE, 1987 E30 Convertible
Turn of your command center to see if it is amplifier noise
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Old Oct 17, 2023 | 12:16 PM
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A troubleshooting trick that I've heard of other people trying is to put wide tape (like they use when installing a windshield) around the perimeter of the windshield and the leading edge of the sunroof to change the airflow to see if that is causing some resonance. If it changes the noise, then remove it one section at a time until you narrow down the source.
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Old Oct 18, 2023 | 11:27 AM
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I have played with the command and has nothing to do with the sound system.
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Old Oct 18, 2023 | 09:06 PM
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From: In the Shadow of the Tetons
2013 ML350 Bluetec
Have you checked all your belly panels to ensure they're properly mounted? Might not notice that one is loose when there's not a 60mph breeze pushing it around.
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