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4th generation of BMW's popular 3 Series line of sedans and coupes.

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How can I fix my window switch that has stopped working properly?

My 2006 BMW 330ci has four window switches to control all of the windows. One slight pull on the front two window switches should make the windows roll all the way up. My driver window switch will no longer roll down my window but will roll the window up if I hold the switch. The automatic one touch roll up also does not work. If I pull the switch quickly to engage the automatic roll up, the window simply rolls up slightly and then rolls all the way back down. How can I correct this issue myself? I feel as though it would be an easy fix or a really expensive one at a dealership.

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I have a similar issue. My driver's window automatic roll down doesn't work, but it works upwards. I've read that it's a synchronisation issue, but I haven't been able to fix it.

replace window regulator in the door. The regulator utilizes a plastic pulley, this pulley is the failure point.

What he said^^^

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Press window Open and hold for 5 seconds after the window is open. Then press the window close and hold for 5 seconds after the window is closed. No try the auto open and auto close. Do this for each window that has a sync problem.

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the green light sometimes on and off

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You can try using contact clener spray in to the switch after you take it off your door and if it still does not work then you can order from the internet and change it by yourself. Is not a difficult task to do.

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I researched this question pretty carefully. Here's what I learned:

  • The problem is extremely common in BMW 3 series cars (esp. 325 and 325xi). It is especially common with rear windows on 4-door sedans.
  • It is caused, most of the time, by a part called a "window regulator." There is one inside each door, and most of the time, it has to be replaced.
  • The part itself is not so expensive, but because the door has to be taken apart, the labor cost is high. I had to get this done here in Philly, mainly because I know the limits of my competence and I'm not quite ready to risk wrecking my own car while trying to fix it. All in all, it cost over $300 - and that was for one window.
  • Incidentally, the problem is most common in BMW 3 series cars, 2001-2006, with average mileage of 101,745 miles (range is 9,000 to 280,000 mi.).

I downloaded and have attached a diagnostic chart that can help you determine whether the window regulator needs to be replaced. Hope it's helpful.

windowregulatorflowchart.pdf

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BTW, the repair was successful. Over six months later, it continues to work like a charm.

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