Why will my right rear window roll down but not up?
2010 Hyundai Elantra
The right passenger window will roll down using the drivers switch, but won’t roll up. It won’t do anything when using the passenger door switch. I confirmed the window mechanism works, the motor works in both directions (tested with a 9v battery), and the port that powers the motor is outputting 12v and -12v when controlled via the passenger window switch (measured with a multimeter).
So I’m baffled. It doesn’t seem as simple as supplying the motor with 12v. It’s like something is happening once everything is assembled that either keeps the motor from receiving the 12v or something is causing the voltage to not go to the motor.