I have a '97 C230. The left front window stopped working in the down
position. Took the door panel off and applied external 12v to the window
motor and the window raised and closed properly.
I get NO voltage to the 2 wires going to the window motor. Removed the
window switch panel expecting to find mechanical switches; however, the
switches are sealed and mounted on a printed circuit board so there is no
dirt in the contacts. The fuses are OK.
I suspect the relay is bad but I don't know where it is located. Can anyone