05-26-2021, 11:43 PM | #23 |
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If it's possible to push the recirculating flap past its end stop in one direction, shouldn't it be possible to pull the flap in the reverse direction to restore it to the correct side of the end stop? Perhaps using a suction hose to "grab" the flap so you can pull it.
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05-27-2021, 07:06 AM | #24 | |||
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05-27-2021, 10:18 AM | #25 | |
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05-27-2021, 10:28 AM | #26 | |
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05-28-2021, 12:48 AM | #27 |
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BMW documentation states to put the air into FRESH AIR mode, (recirculating air light not lit up). I'll have to do more research into this as I believe that putting into recirc would make the flap be flat against the housing and this further away from knocking it when installing the new microfilter. Although I will say, I put my air specifically into Recirc and this is what happened. So I'm sure BMW knows what they are doing. I will do it in fresh air mode next time and see how it turns out
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05-28-2021, 03:11 PM | #28 | |
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05-28-2021, 03:22 PM | #29 | ||
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05-28-2021, 05:29 PM | #30 | |
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05-29-2021, 09:31 AM | #31 | |
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When I made the video, I was in fresh air mode...by luck! Maybe I should mention this in the video description. Thanks!
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05-30-2021, 09:56 AM | #32 | |
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After some thought, I think I figured out BMW's rationale for putting the CC in fresh air mode. Leaving the flap open (fresh air) minimizes/prevents the risk that it erroneously over-rotates into a stuck position; if you were to accidentally bump into a wrong position during a filter swap, cycling the air mode from "fresh air" to "recirc" would simply correct the flap back into the closed position. I'm guessing that leaving the flap closed (recirc) during a filter swap might still get bumped open, and if the system ever went from "recirc" to "fresh air" mode, that would end up forcing the flap to over-rotate "open" and get into that dreaded stuck position. Just my own thoughts from someone who wanted (but ended up not being) an engineer
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06-01-2021, 02:24 PM | #33 |
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06-02-2021, 09:44 AM | #34 |
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They may have engineered it this way to discourage people doing DIY on their vehicles.
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06-02-2021, 10:31 AM | #35 |
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Bingo. Alleging that BMW's were engineered by drunk high school dropouts is foolish. A huge chunk of their brand is "German Engineering." What they do has purpose, even if you don't agree with it.
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06-02-2021, 03:53 PM | #36 |
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If you think that's hard you probably shouldn't be a DIYer.
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06-02-2021, 06:39 PM | #37 |
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Not hard at all. I think is a simple DIY. If you have the knowledge on how to do it, you shouldn't have any troubles. The flap is the only complication you may experience and involve a lot of additional tasks to revert it, which makes people think is complicated to accomplish.
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06-07-2021, 05:03 PM | #38 |
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BMW have just released an SIB for this issue after microfilter replacement. No parts replacement necessary. This issue won't be caused by anything other than recently replacing the microfilter.
They had talked about it previously but actually released repair info now. Turns out exactly what i described earlier is the repair. Remove the blower fan, and push the flap back to its normal position. You then recheck it to ensure the stepper motor did not get damaged at all. May have to "readdress the stepper motors" and "reinitialize the stepper motors" but I think that will be a rare occasion. |
06-09-2021, 06:05 PM | #40 | |
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Produced: 2018-03-15; Delivered: 2018-03-29 MY19 X3 M40i: Produced: 2018-08-15; Delivered 2018-08-22 |
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07-26-2021, 01:12 PM | #41 |
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In for the SIB number- Same thing happened to me and the flap is stuck open. Any more pictures or details what flap needs to be rotated and in what direction? I dont want to brake the delicate plastic parts by forcing it.
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07-26-2021, 10:06 PM | #42 |
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Just completed this and took me all of 5 mins!! Took me longer to get the bloody tools out!!
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Chief Orman688.00 |
07-27-2021, 12:07 AM | #43 |
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You need to remove the microfilter again and inspect upwards into the air box. The flap that is pointing up will need to be rotated downward toward the cabin and rechecked for smooth movement. If you bring to the dealer they will be able to do all of this for you, including performing a vehicle test and test plan to recalibrate the motors to ensure everything is ok. We've seen a few vehicles where the flap pops off the rod and the flap actuator needs to be removed and installed again with the flap and rod. I think most vehicles though will be fine when gently rotating it back. You will need a long radiator pick or something as you can not physically reach it with your hands.
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Chief Orman688.00 |
07-28-2021, 10:37 AM | #44 |
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LOL....so how much does it cost for the dealer to change the filter? Parts cost? "book" labor time/cost?
I'm just guessing but I doubt it would take a BMW dealers tech between 15 to 30 min TOPS. But I'd be interested to see some numbers (before I attempt to DIY and hurt my back....LOL) |
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