Gilley:
Just picked up my new Ml500 SE and was noticing on the way home on the freeway, a humming noise from the rear. It happens on de-acceleration only from about 75 down to 60 MPH. I can change it with the throttle! I had a 00 430 prior to this and heard no such noise. Is it possible that the exaust on the 500 is louder than the 430? The reason I say exaust is that I left it in 3rd gear by accident after coming off the freeway and when I slowed down I heard the same noise, otherwise I might blame the center driveshaft bearing. I would hate to think that was true on a new truck with only 100 miles on it! Any prior experience by anyone?? Thanks!!

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David L