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      05-17-2018, 06:08 PM   #3
AlpineWhite_F80
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Drives: 21 G80 M3C, 21 X6 M50
Join Date: Feb 2017
Location: Miami, FL

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Never heard of this before not even in bmw training.
What you might be hearing is the water pump recirculating coolant through the system after you shut it off.
Mine stays on after spirited driving and you can clearly hear it.

Sandro
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