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2019+ BMW 3 AND 4-SERIES FORUMS (G2x Generation) General G20 Sedan / G22 Coupe / G26 Gran Coupe Discussions Anyone else have a faulty window switch?

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      08-07-2019, 10:30 PM   #1
Weiner0123
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Anyone else have a faulty window switch?

Hey guys, I had this issue a month ago where my window switches all stopped working, I fixed it with a simple cycle of the car by turning it off and turning it back on.. it started acting up again today but this time it's totally just stopped working, anyone else having this problem??

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      08-08-2019, 06:14 PM   #2
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Best to take it to the dealership. I'm sure it is just a faulty fuse.
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      09-27-2019, 04:36 PM   #3
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Quote:
Originally Posted by Weiner0123 View Post
Hey guys, I had this issue a month ago where my window switches all stopped working, I fixed it with a simple cycle of the car by turning it off and turning it back on.. it started acting up again today but this time it's totally just stopped working, anyone else having this problem??

Mine has just started doing this too! How did you sort this out?
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      09-27-2019, 08:54 PM   #4
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Originally Posted by H55 View Post
Quote:
Originally Posted by Weiner0123 View Post
Hey guys, I had this issue a month ago where my window switches all stopped working, I fixed it with a simple cycle of the car by turning it off and turning it back on.. it started acting up again today but this time it's totally just stopped working, anyone else having this problem??

Mine has just started doing this too! How did you sort this out?
It just started working randomly it's weird it's happened twice now I don't know if it's a software glitch or what not but ever since I got my car updated it stopped doing it,
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      09-28-2019, 02:44 AM   #5
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Originally Posted by Weiner0123 View Post
It just started working randomly it's weird it's happened twice now I don't know if it's a software glitch or what not but ever since I got my car updated it stopped doing it,
Going to take mine in today as mines just completely stopped now! No lights on the buttons just on that little section and the folding mirrors won’t fold
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      09-28-2019, 02:47 PM   #6
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Quote:
Originally Posted by Weiner0123 View Post
Hey guys, I had this issue a month ago where my window switches all stopped working, I fixed it with a simple cycle of the car by turning it off and turning it back on.. it started acting up again today but this time it's totally just stopped working, anyone else having this problem??

There's a way you can reset them. Just google it and it will fix the problem. Had to do it myself before and my CA at the dealership also told me to do this if it happens again.
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      10-13-2019, 02:51 PM   #7
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How do you resett them? Cant fint any solution.
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      12-07-2019, 01:53 PM   #8
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Quote:
Originally Posted by H55 View Post
Quote:
Originally Posted by Weiner0123 View Post
It just started working randomly it's weird it's happened twice now I don't know if it's a software glitch or what not but ever since I got my car updated it stopped doing it,
Going to take mine in today as mines just completely stopped now! No lights on the buttons just on that little section and the folding mirrors won’t fold
Quote:
Originally Posted by H55 View Post
Quote:
Originally Posted by Weiner0123 View Post
It just started working randomly it's weird it's happened twice now I don't know if it's a software glitch or what not but ever since I got my car updated it stopped doing it,
Going to take mine in today as mines just completely stopped now! No lights on the buttons just on that little section and the folding mirrors won't fold
Did you ever get this solved? Having same issue right now on m340
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      12-07-2019, 03:08 PM   #9
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My m340i was the first production car. Main window switch doesn't work and doesn't light up at night, meanwhile blind spots warning, kick to open tail gate, driver side mirror auto dim aren't working. Took it to the dealership, and they found some of the first production cars driver size mirror causing shortages to the whole car... Dealership still waiting parts to fix my car....
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      12-07-2019, 03:12 PM   #10
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Quote:
Originally Posted by H55 View Post
Quote:
Originally Posted by Weiner0123 View Post
It just started working randomly it's weird it's happened twice now I don't know if it's a software glitch or what not but ever since I got my car updated it stopped doing it,
Going to take mine in today as mines just completely stopped now! No lights on the buttons just on that little section and the folding mirrors won’t fold
I think you have the same problem as mine. Lights doesn't light up, also can't fold mirrors.
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      03-03-2020, 07:42 AM   #11
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Faulty windows switch G20

This problem is well known on the G20 and its caused by the outer rear view mirrors. The eletronic modul in the outer rear view mirrors shorts as they are not completely water prof. This causes all side windows to stop working as they are connected to the same LIN-bus circuit. It has occurred 3 times for me. First time the workshop changed my right hand mirror, every thing worked perfectly for 2 months and the problem came back. This time it was the LH side mirror that fucked up. Since the is no update on mirror assembly since production start, the electronic modul was changed as this part has been updated. The right hand side fuck up again 2 minutes after the workshop had changed the modul on the left side when testing. So this modul was also changed. So there you go guys, now you know.
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      12-14-2020, 02:47 PM   #12
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Mine has developed the same problem. Some times the switches work but most of the time they dont. I note that the drivers mirror has like a spiders web effect in the glass. Anyone else have this problem with the mirror.
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      02-02-2023, 01:51 PM   #13
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Originally Posted by H55 View Post
Going to take mine in today as mines just completely stopped now! No lights on the buttons just on that little section and the folding mirrors won’t fold
How was this problem fixed. Just started happening to me. About a week later after I replaced mirrors w the carbon fiber caps. Had for 3.5 years now no problems up until I started adding mods
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      02-02-2023, 01:54 PM   #14
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Can anyone tell me how the issue was resolved with no driver window controls working and lights also out and mirrors don’t fold or unfold ?
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