Coolant draining on B58

tsunami · 12-16-2025, 05:00 PM

Which exact hose(s) do I need to disconnect to fully drain the main/high temperature coolant circuit? (2017 540i)
Replacing the upper radiator hose so I want to do a full drain and fill

PapiEsq · 02-06-2026, 12:40 PM

Hey there - did you ever get any clarity on this?

gongodefoy · 02-06-2026, 05:04 PM

I’m also interested in this information.

Thank you

12-16-2025, 05:00 PM	#1
tsunami Registered 0 Rep 2 Posts Drives: 2017 BMW 540i Join Date: Oct 2025 Location: California, USA iTrader: (0)	Coolant draining on B58 Which exact hose(s) do I need to disconnect to fully drain the main/high temperature coolant circuit? (2017 540i) Replacing the upper radiator hose so I want to do a full drain and fill
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02-06-2026, 12:40 PM	#2
PapiEsq BMW n00b 73 Rep 32 Posts Drives: 2022 BMW 540i xDrive Join Date: Aug 2025 Location: Connecticut, USA iTrader: (0)	Hey there - did you ever get any clarity on this?
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02-06-2026, 05:04 PM	#3
gongodefoy New Member 5 Rep 21 Posts Drives: BMW 540i Join Date: Jun 2023 Location: Miami iTrader: (0)	I’m also interested in this information. Thank you
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