The following reply was posted by el_penguino:The passenger window on my 03 has been doing the same thing. First it started by intermittently not responding to the down switch like yours, then it got stuck down. I took the regulator/motor out and took the motor housing off and removed the armature/worm screw and took a look at the brushes. One was burned up pretty badly and caked in carbon. I cleaned everything and lubed as appropriate and put it back together and reinstalled. Everything worked fine for about a week, then the window slowed to a stop when I was putting it back up earlier this week. I removed everything again (out in a snowstorm) and manually cranked the window back up by turning the armature while the motor housing was off.
So that's where I am. I was planning on ordering a new regulator/motor assembly, then I saw this post...
So your brush replacement was successful?? Did you see similar damage/buildup on your brushes before you replaced them?? I think (at least in my case) the motor's sporadic refusal to start is because of the burned brushes. I think after at times this prevents a good enough connection between the brushes/commutators. I know it might sound silly, but I did notice back when the occasional refusal to move was the only problem (which became increasingly frequent over about 6 months) that if I hit a bump in the road or gave the door panel a whack that the window would (more often than not) work again.
Take that for what it's worth...I'm a chemical engineer, not electrical... But, if you could please tell me where you got your replacement brushes, if you saw a similar problem with the originals, and if you've had any problems with that motor since, it would be much appreciated...
Thanks...hope something in there helps you...
MBECKWIT - What I did was purchase a used regulator from the junk yard and replaced the front passenger side. When the drivers door started acting up, I removed it and used one of the brushes from the one I removed from the passengers side.( I am a pack rat and never throw anything away, just in case)
Only one brush was burned pretty bad. That was last fall.
I know I am probably on borrowed time.
But further, I do not believe that the motor or regulator or track is the issue. Dirty switch? maybe.
But it acts like a logic problem (electrical eng). Even almost like a capacitor charge or discharge time.
Like I said, I will be pulling up to a coffee shop and try to put down my window, and nothing. Wait 10-15 seconds and it works every time.
Other times it works all the time.
Modified by mbeckwit at 2:43 PM 3/4/2008
