Quote:
Originally Posted by CharlieHustleX5
Why would the auxilliary fan not working cause your x5 to overheat? I haven't had mine work for the past 2 years and not once has the car overheated. Unless you use your AC often, the aux fan doesn't play a huge role in the cooling system. It only comes on when the engine temps get to a certain temp and then shuts off.
Not sure how much time is given for specific repairs, but the front bumper, fan clutch, expansion tank, and radiator all have to come off to remove the aux fan. Also include draining the cooling system and refilling/bleeding once put back together.
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I agree in terms of the overheating angle. My Aux fan gave up the ghost and the only thing that changed was my aircon stopped working properly. I live in Africa and drive around all day in +30 deg Celcius and mine never looked like overheating (2006 3.0D, but it should behave much like yours). If your X is overheating I am pretty sure it is not the Aux fan!
Incidently I was charged 6 hours labour to repalce the Aux fan and purge and regass the aircon (BMW dealer in Johannesburg).