Rear disc shows absolutely no function anymore

Moin Moin I’m back again Since I’ve come across really competent help in my other topic, I’d like to tackle the next topic, for the backlights I have enough information now and have to study now So for two days now my rear window on the side of the Beifahmer no longer shows a sign of life. So really absolutely none. It doesn’t lower when I open the roof. It doesn’t lower when I open the door. It doesn’t lower when I open the window in front. And of course, it doesn’t lower itself when I drive it. So absolutely nothing. I checked the fuses. Everything good! What else can that be? So it doesn’t make any more mucks! And before that worked perfectly. The engine can’t be over or? Can there be a plug off? Have the disguise taken off there once, but apart from a little “other” aggregate I couldn’t find it all hidden under metal. Does someone have a thought-out for me? By the way, it’s almost like that it was something else.