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      07-11-2014, 05:16 PM   #8
Bönz
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Drives: 2018 M5
Join Date: Jan 2012
Location: Michigan

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try rolling it down with one touch. then after it stops, push the button down and hold it for about 5~10 seconds. you may notice the wind going a bit further down. then try one touch up. this process might reset it.
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