I am trying to solve a problem on a relatives 1995 C200 Elegance automatic that he has recently bought.
All 4 electric windows do not work, I have checked the two 30A fuses in the boot both intact, and had a look at the control unit next to the battery.
When each window switch is pressed each corresponding relay clicks in (I removed to cover from the unit) and could see and hear each relay click.
Also when I tested with my voltmeter there was 12V present when each relay clicked in.
Are these control units prone to failure?
Also the electric sunroof worked perfectly and this seems to be controlled by this unit.
Really appreciate any help.
Regards, Oldrover