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      05-26-2021, 10:36 PM   #22
freshxdough
BMW Elite Master Tech | HV Gen 5 | HV Specialist
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Drives: 2024 iX 50 | 2020 X3 M40i
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Quote:
Originally Posted by CRuben09 View Post
Quote:
Originally Posted by freshxdough View Post
Worst part about it is if you accidentally end up pushing the recirculating flap past it's end stop resulting in poor air flow and even a slight air resistance/whistle that can be heard during fan operation. Ask me how I know because I did it last week when I serviced my microfilter. I've done thousands of micro filters and the G01 apparently is the only one you can possibly do this with. Yesterday I had to remove the complete glove box, passenger knee airbag and the blower fan to be able to access the flap and flip it back over. This is a known issue and there is an SIB for it. According to the SIB replacement of the complete air conditioning box is necessary. I wasn't about to take my car back to my own dealer for that lol.
What are the odds of finding your post? So, 2 weeks ago, under the regular maintenance, the service center replaced the microfilter. When I picked up the car, I immediately noticed that the fan blower wasn't as potent as before, and a whistling noise could be heard when turning on/off the A/C unit.

Is that flap located at the top of the microfilter housing? I found the one for the outside air which is I believe on the back side. I had to manually force it, so I could get more air, but if I press the recirculating button it doesn't do anything. Can you explain step by step what you did? If you can of course.

Thanks!
Step by step was described in my previous post. If you remove the micro filter and look up inside the housing you will see the flap that is sitting incorrectly, like my first photo.

I chose to try and flip the flap myself. You will need to remove the glove box with T20 torx bits. Then also remove the 3x T20 screws on the air box that are installed straight up and remove the blower fan. Then you should see what my 2nd and 3rd photos are. I had the ignition on just so there was power going to the flap motor just so I wasn't pushing against an unpowered flap. I flipped it around almost a whole 180 degrees then turned off the ignition. Turned it back on and selected and deselected recirc and watched the flap work normally again. Drove to and from work today and it's working normally now.
Appreciate 6