If the glass on the driver's license at the Mercedes E-Class (W212) is raised to the end and then slightly opened, it is necessary to "train" the window lift. To do this:
Close all the doors, place the key in the ignition switch, and then pivot it to the first or second position.
Press the window-lift button and hold it until the glass is completely closed.
Hold the button one second.
If you drop the stack after this, you must close it immediately and hold the button for another 1 second. After training, the problem is solved in most cases. If not, it may be necessary to:
Exchange of glass
Replacing the rails.
Adaptation of window-lifts in the door control units.
