E46Fanatics - View Single Post - Strange Humming **vids included**
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Old 08-30-2012, 12:40 PM   #1
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Join Date: Apr 2012
Location: Vancouver
Posts: 281
My Ride: 05 M3 Vert/11 X3 M
Strange Humming **vids included**

Howdy folks,

So I wanted to adjust my headlight beam last night, turned the ignition to on, went under the hood only to hear this very strange humming coming from a black box that looks to be mounted right by the oil dipstick (video below) Any idea's what this is?


I also have a squeal which is constant no matter what temperature the vehicle is at. Recently changed the rad hoses and pulleys; belt seemed in good condition so I didn't change that. Any ideas?


Thanks guys,

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