buzzing/ humming noise coming from behind the rear-view mirror.

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sassanbehnam

New Member
Joined
Nov 27, 2023
Messages
3
Location
Monte Sereno, CA, USA
Car
2004 Mercedes G500
Hey guys,

I'm new to the forum, but not new to MBs. I picked up a 2004 G500 with 106k miles yesterday. when I started driving it a bit more,
I hear a weird buzzing/ humming noise coming from behind the rear-view mirror.

here are some characteristics.

-Sound starts at 45MPH, speeds any lower than 45mph and you won't hear it.
-It is not affected by engine speed, changing gears or shifting into neutral does not change the sound/volume/tone.
-Once you hit 45mph it increases in volume and remains constant.
-If I rev the motor in park, there is no noise.

Here is a short video clip I shot.

https://youtu.be/Og_KD2nD5FI
 

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