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      04-11-2012, 05:29 PM   #12
AndreyT's Avatar
Drives: 2011 335i Sedan, Sport
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Originally Posted by tk9 View Post
buzzing/humming sound when driving over imperfections
So, what kind of sound is it? Like an electric pump working? Or like something loose is vibrating?

In some cars driving over road imperfections under braking results in quick activation of ABS, which is immediately followed by a buzzing sound from ABS motor restoring the pressure in the system.
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