BMW Questions? Ask a BMW Repair Expert for Answers.
do you have a factory BMW scan tool?
I dont have a BMW scan tool, I only have an Autel AL619 scanner
I will provide an honest answer. I trust this will be appreciated. Please remember that a low rating PUNISHES me for being honest and that I receive nothing for my time until a positive rating is clicked.this fan can only be tested with a factory BMW scan tool which can command it to run in a test mode
most of the time when the fan stops running, the fan itself is the problem.
the fan will run in response to engine temp or to AC system pressure, so if it never comes on, the issue cannot simply be a sensor and wiring issues are exceedingly rare
if you don't have a BMW factory scan tool then I would check the fuse for the fan and if it is good, replace the fanPlease let me know if you have further questions. Please do not forget to click a positive rating as this is the only way I receive credit for my answer, thank you. Best wishes with your vehicle.
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no you cannot jump the wires because the fan always has constant power and ground and is triggered via computer signal from the ECU
power comes in on the red/blue wire
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