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  #31  
Old 07-10-2019, 06:21 PM
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Amazingly, my window shade came off easily with a gentle tug. Someone's been in there before for... some reason or other. The regulator came out in ten minutes - I was thinking back to my E36 days where BMW riveted them (!) to the doors and you had to drill the rivets out. This was a much easier process.

So looking at this, the cable was slack when I took the door panel off. I have a new regulator, motor, and clip all coming but am not sure what necessarily failed. Maybe the little white clip that holds the window to the small metal doodad, which attaches to the cable? I think if the regulator itself goes, you typically see the cable pulled out somewhere, correct?

In any case, I have all the new parts so I'm just going to throw them all on it. The regulator is stamped March 2001, so it's original to the car.

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  #32  
Old 07-10-2019, 09:54 PM
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Seems like there's some cable missing - shouldn't it be a complete loop?

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  #33  
Old 07-11-2019, 08:38 AM
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Originally Posted by wpoll View Post
Seems like there's some cable missing - shouldn't it be a complete loop?
Hah! I guess the cable did snap. This is my first time playing with E39/E53 regulators so I don't know "normal" yet.
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  #34  
Old 07-28-2019, 05:34 PM
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Alright, finally had some time to get the window regulator back together and that is working well.

I have been doing some reading on here and learned that the aux fan is supposed to self-test at startup and run if the AC is cranked. My X5 doesn't overheat, but the aux fan never runs, either. I put an AC Pro recharge kit on the car and it was in spec as soon as I hooked the can up, so I didn't add any R134 to the system. I believe I read something about the compressor not engaging if the aux fan isn't on?

In any case, I have the Schwaben scan tool and there are no faults related to the fan, either in the DME or IHKA computers. I tried unplugging the sensor from the pressure switch and the fan did NOT come on.

So, thinking the fan is dead? It'd be nice to have AC for my off-road trip, but I'm also concerned about overheating as I know the aux fan should engage after being run hard/on a hot day and mine hasn't done that at all.
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  #35  
Old 07-28-2019, 05:51 PM
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Verify the thick red wire at the fan connector has 12V. If it does, check the ground as well. If both of those are good, I would guess the fan is done. I had one fail on mine a few years ago.

Disregard the voltage testing of the small signal wire, the video author does not know how this operates. You would need an oscilloscope to test this wire properly.
https://youtu.be/blFTiVrWrFE

Last edited by Overboost; 07-28-2019 at 05:56 PM.
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  #36  
Old 07-29-2019, 01:12 AM
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The scan tool you have can activate the ac clutch manually as well as the aux fan. Use to confirm function or not.


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  #37  
Old 07-29-2019, 01:30 AM
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Quote:
Originally Posted by Brake_L8 View Post

So, thinking the fan is dead? It'd be nice to have AC for my off-road trip, but I'm also concerned about overheating as I know the aux fan should engage after being run hard/on a hot day and mine hasn't done that at all.

Not accurate. The aux fan only engages when hot enough to require it.

It will come on at lower temps when the ac is engaged to cool the condensor coils but it will often not come on even on quite warm days.

Example: when I my mechanical fan clutch one day by blocking it with a folded magazine, the aux fan kicked on within 10 seconds, and after about 20 seconds turned off when I released the mechanical fan to spin
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  #38  
Old 07-29-2019, 04:41 AM
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I tested my Aux Fan today while I had INPA hooked up as part of my oil service... I always test it when doing any sort of service and have INPA hooked up. It's in the activation menu (engine) - called E-Blower (F1=on, F2=off).
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Last edited by wpoll; 07-29-2019 at 05:08 AM.
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  #39  
Old 07-29-2019, 09:16 AM
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Quote:
Originally Posted by andrewwynn View Post
Not accurate. The aux fan only engages when hot enough to require it.

It will come on at lower temps when the ac is engaged to cool the condensor coils but it will often not come on even on quite warm days.

Example: when I my mechanical fan clutch one day by blocking it with a folded magazine, the aux fan kicked on within 10 seconds, and after about 20 seconds turned off when I released the mechanical fan to spin
Right - should have used more words, I know it doesn't run all the time. Guess I figured it should have tried to spin given the hot days we have had in the DC area lately.

I will try to find the test functions on the Schwaben tool. Will have the X back with me on Wednesday, have been in press cars the past two weeks so it's parked at a friend's place. Definitely worth testing before ordering parts all willy-nilly.
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  #40  
Old 08-05-2019, 06:52 PM
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Got the X5 back in my hands and hooked up the Schwaben/Foxwell scan tool. I found the menus to test both the AC compressor and aux fan. In both cases, the tool allowed me to "activate" the item and confirmed "activated" but air blowing from HVAC did not get colder.

When I activated the fan, it did not spin. When I activated the compressor, the engine RPM did dip a bit. Sounds like I need to check fuses and power to the fan before ordering a new one.
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