e30 sedan left rear power window not working but right rear does

[JonsE30]

please help me figure this out

all power window switches are lit up around the shifter. both front and rear right window work. the rear driver side window switch doesnt even light up. i thought at first it was the switch, so i swapped the switch from the working rear right window and it still didnt work, no lights either. i dont think its the window breaker switches at the top of the shifter since the rear right still works. i think there is only 1 fuse that controls all windows, so i dont think its a fuse.

i am assuming there is no power going to that door, but where can i trace it and fix it? is it the window motor? but if this was dead would the switch not light up either?

please help.

[jeffnhiscars]

There a rubber boot at the door hinge that covers the connector with all the window wires. It's very common for them to get corrosion. A proper cleaning often solves it

[AndrewBird]

Check for power at the motor with a test light. If you have power, the motor is likely bad. If you don't have power, start tracing it back until you find power. You problem is between those two points.