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E36/7 Z3 (1996-2002)
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Old 01-08-2011, 05:29 PM
Dirkjr Dirkjr is offline
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Location: North Carolina
Join Date: Jan 2011
Posts: 4
Mein Auto: 2001 Z3 2.5i
z3 window goes up fine but not down

I seem to be having the opposite problem of most car windows. I went to use my driver's side window the other day and to my surprise it slowly went down with a rubber on glass sort of sound. When I tried to put it back up it zipped on back up fast as ever, although, the safety feature that reverses the window when it hits resistance kicked in a few times. I have observed that the door panels close down on the window as soon as it starts to go down and then pull back apart at the top (the opposite of what it does normally.) While it was cold when this happened I have had it in a heated garage since then and it still does that so i dont think the cold is to blame. I dont know a whole lot about z3 windows so any advice you have would be beneficial. Any idea how I can open my window in under 90 seconds again?
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Old 01-08-2011, 09:39 PM
Pants Pants is offline
Road Rager
Location: Texas
Join Date: Oct 2010
Posts: 117
Mein Auto: '06 Z4 SI
Did you try lifting the car upside down?
I hear the world is subject to perspective.

In all seriousness, you'll need to pull off your door panel to properly investigate and repair the issue.

If you're still lost, take some pics or videos and post them here. (After the panel has been removed)
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Old 01-09-2011, 03:52 AM
EOD Guy's Avatar
EOD Guy EOD Guy is offline
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Location: Harvest, AL
Join Date: Jan 2007
Posts: 785
Mein Auto: 98 Z3 // 06 X5
You need to replace the plastic channel guides......$25-30 bucks on ebay. Pretty easy fix..... remove the door panel, spray some WD40 in/on the square plastic window guides and see if it doesn't preform better, then replace them as the WD40 trick won't last long.
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Old 01-09-2011, 05:49 AM
bugsmasher bugsmasher is offline
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Location: kansas
Join Date: Nov 2010
Posts: 25
Mein Auto: 2002 z3
Mine did that to the point of needing help going down, they would even get crooked and hang up. I bought it that way.
I sprayed silicon from a aerosol can on both channels, with the window down, just sprayed enough on the back channel to think it ran down most of it.
Have been working fine to date.
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