Press the window lifter, make a funny noise...just on it, when the window is closed it does *knack* and the window can no longer be driven up.
after disassembly of the door cladding I now saw that a part of the bowden train was hanging from the motor

someone can tell if I have to change the whole engine or if it's just a little plastic part oä. It's like breaking up.
before the repair it already greyens to me, not even the cables attached to the motor and barely get a grip.
