BMW 1-Series Forum (F20) 135i - 1Addicts.com > Second Generation 1 Series Forum > 2012 BMW 1-Series Sporthatch (F20) Discussion > coolant pump switchable F21
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      09-10-2022, 07:24 AM   #1
_Fred_
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Drives: BMW F21 116ed
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coolant pump switchable F21

Good morning everyone.
I have a question. I have a series 1 f21 116ed. In the water pump there (attached image) this system that partialises the water flow rate of the pump.
Why partialize the flow? What is this command controlled by? Thank you all.
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