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Old 08-15-2019, 08:16 PM   #1
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2005 BMW 325i auxilliary fan problem

Hi! I am losing my mind...help! I am having fan issues. Realized it is not coming on to cool car when stuck in traffic. It comes on with ac. DME shuts down ac and fan when car gets hot. I have replaced sensor in lower radiator hose 3 times, replaced climate control recirculated air sensor, and electric fan w/shroud. checked fuse and is good. Took to a private BMW shop and he said he had never seen this problem, he hooked up to my car with his hand held scan tool and turned fan on. Fan came on correctly.There were no codes. Tested 2 wires from sensor to computer, tested good. Tested control wire from fan to computer, tested good.12 volts present on control wire. Drops to 10 when ac with fan kicks on.
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Old Yesterday, 02:26 AM   #2
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Read BMW-North's electric fan guide.
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