FESTER boggie fan shopping in UK experience
this might help any shopping you have to do from the UK
see around post 12 etc
Boggie Boggie is offline
Location: Worksop, Notts. UK
Join Date: Jul 2015
Mein Auto: E83 M Sport auto
View My Garage
X3 Cooling Fan not working
I decided to have a look at the fan assembly. As you say, it is very simple to remove it after taking off the airfilter housing and inlet duct complete with Mass Air Flow. 2 screws to remove, it unplugs and it just lifted straight off.
I tested the supply voltage with my multimeter and there was 12 volts at the supply side of the plug from the battery.
I removed the fan assembly and put 12 volts across motor side of the powercable, but the motor did not run, so I suspect it is the motor
There is another sensor mounted on the top right of the fan assembly(looking from the front of the car), which the chap at the BMW shop said was the aircon sensor. ( it loked like a small microphone with a mesh coverI cleaned this with brake cleaner but wasn't able to test any further. Not sure but I think this sensor links through the aircon switch.
I must buy myself a Bentlu manual as you recommend!
I have taken the precaution of ordering a raplacement fan from one of the BMW dealers in the UK who run an online shop and were able to give me a 20% on-line discount. It comes with a 2 yearwarranty direct from Germany, and If I can find some other reason whythe fan isn't working then I can return it and get a refund within 14 days.
I'll have a look at other posts and your troubleshooting guide and see what I can do.