Thanks for the replies. I took the car to another independent garage and they had better luck than the first, not sure what the first set of "mechanics" were doing. They plugged it in to Xentry and only 1 fault code appeared:
B18B82A - Switch "Right rear power window" has a malfunction. There...
Hi All, I have a 2018 Mercedes CLS (C257) and my rear passenger window on the drivers side does not open or close. The weird thing is that the soft close when opening and closing the door works. When you open the door, the window goes up a bit and down when closing the door.
Took it to an...