Quote:
Originally Posted by Takimo
i call another guy, he is mecanic teacher, he didnt see the car , i explain the situation and he say the fan not running miight be an electric issue and he can repair it without replacing the aux fan .... do you guy believe it can be done ?
he will check the car in 2 week, do you guy think is safe to drive witth a broke aux fan ?
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Just an FYI...the two images below may help with how the aux fan works in your X5 with the M54 engine...it details the connection it has to the DME/ECU/ECM (the brain that controls everything

) as well as other components in the system that triggers it to function:
#1 (from BMW documents)
#2 (I believe the info below is from the Bentley Service Manual)