I am looking to see if anyone can help with an issue that just started recently on my 2014 maserati quattroporte. The rear passenger door has issues with the privacy screen not staying down and not allowing the window to go down. It functions from both the drivers control and the rear passenger door control but only goes down then automatically returns to the up or closed position. I believe it has to be some kind of mechanical catch issue since the electrical part functions but don't know if there is some sort of electrical relay that keeps the window down. Any tips or ideas to repair this issue is appreciated.