This video shows you how to reset the window auto up control feature on a Mercedes C300 (W204 chassis, C-Series model year 2008). The symptoms of the problem are:
Wen you try to automatically close the window (auto up feature), the window stops moving as soon as you let go of the window control switch. You have to hold the window switch up to close the window. When the window reaches the top position and you let go of the switch, the motor moves the window back down a little bit. You have to then momentarily hold the window switch up again in order for the window to completely close.

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