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Ryan5034 · 09-12-2018, 01:41 PM

There is some sort of heater control valve down there. That might be it. Make sure your coolant expansion tank isn't cracked.

09-12-2018, 01:41 PM	#3
Ryan5034 First Lieutenant 83 Rep 360 Posts Drives: 2019 X5 50i Join Date: Jun 2016 Location: Fargo, ND iTrader: (1) Garage List 2019 BMW X5 xdrive50 [0.00] [0.00] 2011 BMW X5 xdrive 50 [0.00] 1964 Chevrolet Bel-Air [0.00]	There is some sort of heater control valve down there. That might be it. Make sure your coolant expansion tank isn't cracked.
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