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PunchTheFish PunchTheFish is offline
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Join Date: Feb 2008
Location: Eastern Pa
Posts: 1,567
S4 Power Window & Sunroof Problem

I have a '91 928 S4, with a strange power window and sunroof problem. I purchased the car with both windows stuck in the up position. I tested both motors, and found they were seized. I replaced both motors, and have only gotten the driver side to work. The power window module (under the driver seat) will click when the passenger side window switch and sunroof switch is pressed.

Issues I have noticed:

I am not getting power to the passenger side window motor connector. It seems I have power from the switch, going to the power window module, but am not getting power out of the module (from the module to the motor). Would it be safe to say the module is bad?

I found a wire disconnected in the loom for the power window module (I believe it was blue / black). When connected to another loose wire in the same loom (believe this one was grey / blue), the power sunroof would operate with the driver side window switch. Both wires had matching male and female connectors. Are these supposed to be plugged together, or not?
The power sunroof does not work with the sunroof switch.

Any help is much appreciated!
Old 09-06-2012, 11:02 AM
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