05-02-2023, 05:08 PM | #1 |
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!!Sunroof Failure!! Initialize works but switch doesn't?
Hi all,
Just learned about the sunroof failure issue common on the G20. I parked the car in a lot with the sunroof tilted open and the shade mostly closed. Came back to the sunroof and shade having entirely closed themselves. After starting the car, the sunroof switch did nothing. When I got home I was able to "initialize" the sunroof as described in every thread about this issue just fine. The whole initialization process is able to complete perfectly: full open/close of the tilt function, full open/close of the sliding function, and full open/close of the shade. I can do this as many times as I want, but the switch still doesn't operate afterwards. I can't find anyone with a similar issue in the other threads on this topic, mostly people with bad motors/FZD modules which would prevent them from initializing at all or cause errors during the process. I don't hear any relay clicks, just dead silence. No errors on the dash either. So what could be causing the switch to simply not want to work in the normal fashion, but have no problem running the initialization procedure? Thanks! |
05-02-2023, 08:11 PM | #2 | |
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Quote:
But basically you have to take it to the dealer. It took me two trips and they had to fully reprogram the roof.
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'22 M440xi GC (BSM/Tacora) Previous: 2017 M240i Convertible; 2016 X5 50i; 2017 Boxster 718s; 2012 328iT Sport; 2009 X5 3.0; 2006 M3C; 2006 530xiT; 2003 325xiT; 2002 330i Sport; 2001 Z3 2.5; 2001 330i.
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