Hi, Yes, this is Peachy!
I was gonna post it over on the original thread but figured I would get better info by posting a specific question.
Its not a "Gears Grinding" kinda noise, its a low grumble, and only lasts a split second.
It sounds like a transmission slip, kinda.
I was wondering/hoping someone could help ID it.
When I seach all the results say K1... so I did that, and it didnt cure it!

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2009 Mercedes ML320 Bluetec