ABS and TRACs kinda go together as TRACS uses the brakes to exert control.
I would try turning the TRACS switch off and on a few times to clean it. You might also try driving a little bit with the TRACS off and then trying it again before you get to more desperate measures.
The only window issues that I have had involve the switches.
On 740s you can remove the switches, disassemble them, and clean the contacts. In my experience, these switches get flaky first when the window is going up as the motor is doing more work and draws more current.
What trouble shooting did you do before you took the door off?
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'96 855R,'64 PV544 driver, '67 P1800 basket case, '95 855, '95 854, the first three are mine, heh, heh, 485,000 miles put on 9 bricks
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