Auxiliary fan fixed!!! (01 X5 4.4i)
 

Thanks to all your helps outhere specially Upallnight!!!:thumbup:
I just wanted to make an update on the A/C Not working due to
dead auxiliary fan, and keep pushing Hot air inside the cabin.

Unfortunately I did Not have pictures coz I was trying to get done as quickly
Well, I don't know for other year/models, but after several attempts to get
the Old fan out of the car, I discovered that the auxiliary fan comes out from
under the bumper, meaning sliding under the car. But it is much easier to have someone with you like I did, otherwise the bumper just needed to lay down
a little bit, :damn:not completely remove. Once you locate all the screws and
remove them, the bumper just need to slightly lay down so you can remove
the two sides plastic peaces one on each side that holds the air around and
remove the two screws that support the aux fan, you're good to go.

I just did the same reverse procedure by sliding the new auxiliary fan under the front bumper about 5 minutes, the new fan already installed.
I quickly connected the aux fan and start the car, put my A/C on to see
the effect and Booommmmm Aux fan kicks in, and now I immediately noticed
that my cabin filled with cold air like never before and say bye bye:nanana:to hot summer time coming.
(2001 X5 4.4i)

Updated!!!
 

Thanks to all your helps outhere specially Upallnight!!!:thumbup:
I just wanted to make an update on the A/C Not working due to
dead auxiliary fan, and keep pushing Hot air inside the cabin.

Unfortunately I did Not have pictures coz I was trying to get done as quickly
Well, I don't know for other year/models, but after several attempts to get
the Old fan out of the car, I discovered that the auxiliary fan comes out from
under the bumper, meaning sliding under the car. But it is much easier to have someone with you like I did, otherwise the bumper just needed to lay down
a little bit, :damn:not completely remove. Once you locate all the screws and
remove them, the bumper just need to slightly lay down so you can remove
the two sides plastic peaces one on each side that holds the air around and
remove the two screws that support the aux fan, you're good to go.

I just did the same reverse procedure by sliding the new auxiliary fan under the front bumper about 5 minutes, the new fan already installed.
I quickly connected the aux fan and start the car, put my A/C on to see
the effect and Booommmmm Aux fan kicks in, and now I immediately noticed
that my cabin filled with cold air like never before and say bye bye:nanana:to hot summer time coming.

Congrats. You'll enjoy that cool air come this summer.

Your description sounds just like the Calsonic variable displacement control valve problem outlined by g300d. http://www.xoutpost.com/bmw-sav-foru...-ac-delay.html
http://www.google.com.au/url?sa=t&rc...45645796,d.aGc

yeah it does, ive just been putting up with it , and now as we move into winter ( australia)
its not such an issue,

however one thing i have noted is that the a/c will kick in sooner the cooler the weather is,

its on my short list for repairs over the winter, i originally took it to an a/c repair shop but they wouldn't look at it till the electric fan was working, so i replaced the fan and haven't had time to get them on to it again

I have the same problem, and I've noticed the same thing, but I think it's because in summer as soon as I switch on the X5 I want A/C, and after a while it kicks in.
So the solution would be 1) replace the compressor ,2) replace the control valve, or 3) modify the control valve so that its on as soon as the compressor engages, so locked in position, with some relief mechanism if necessary. Modifying seems the best choice, because replacing the compressor, it could just happen again at some stage. Just got to find someone who understands what needs to be done, and can do it...