When the regulator was going out on my e39 Touring...the front assenger window would work its way down. It did it slowly or if hitting a bump....would begin to drop It didn't lower all at once as if someone was intentionally opening the window.

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• 2015 f06 650ix GC (Moonstone exterior/Cohiba brown Merino Leather interior)
• 2014 f15 X5 50i (Space Gray exterior/Mocha Nappa Leather interior)