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E39 (1997 - 2003)
The BMW 5-Series (E39 chassis) was introduced in the United States as a 1997 model year car and lasted until the 2004 when the E60 chassis was released. The United States saw several variations including the 525i, 528i, 530i and 540i. -- View the E39 Wiki

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  #1  
Old 02-26-2011, 02:06 PM
BMW_GURU BMW_GURU is offline
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Location: USA
 
Join Date: Feb 2011
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Mein Auto: 200 BMW 528i
Window Regulator, rear driver, 2000 528i

!HELP!
The rear driver window regulator died 2 weeks ago in my 2000 BMW 528i. I was able to successfully remove the assembly and reinstall the window (propped up by installing a piece of wood screwed to the housing).

I was able to purchase the OEM regulator without the motor. I am about to mount the new motor on the assembly but notice there are no limit switches that stop the up and down motion. Are these inside the motor casing? Is there a specific orientation for the motor when installing? Does the motor just have a current sensor that determines when the window is up or down?

I don't wan to install this and then hit the down switch and have the window try to go past where it should be... Thanks for anything anyone can provide!!!!
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  #2  
Old 02-26-2011, 04:23 PM
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bluebee bluebee is offline
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Location: San Jose, California
 
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Mein Auto: 02 BMW 525i M54 auto 130K
There is an adjustment procedure in the Bentleys.

It's also discussed in this thread:
- What's the NEXT step for removing the door panel to diagnose broken window regulators
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  #3  
Old 02-26-2011, 06:54 PM
BMW_GURU BMW_GURU is offline
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Awesome thread with tons of info! However most of the information I saw was for replacing the regulator, and not for replacing the regulator motor (I was even wearing my glasses this time). I might need to purchase a Bentleys if I cannot find the adjustment procedures online. Thanks for the info!
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  #4  
Old 02-27-2011, 12:07 AM
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bluebee bluebee is offline
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Quote:
Originally Posted by BMW_GURU View Post
I might need to purchase a Bentleys if I cannot find the adjustment procedures online
You need the Bentleys anyway ... but ... what was wrong with the adjustment procedures already provided in step #55 of that link?

They're typed up verbatim from my Bentleys, section 512-8.
Adjust window as described earlier.
  • i.e., "Door window, adjusting", (512-8)
  • "Door window, adjusting", (512-8)
  • Whenever the door window or window regulator is removed, window adjustment should be checked. The glass should contact the top of the window squarely and should seat against the window seal uniformly.
  • NOTE: If the window does not contact the window seal uniformly, wind noise or water infiltration may result.
  • Remove door panel as described in "411 Doors".
  • Disconnect negative (-) cable from battery. Remove airbag unit and vapor barrier from door. See "721 Airbag System (SRS)".
  • Longitudinal adjustment:
    • Adjustments are made with window in open position.
    • Loosen window guide rail mounting nuts (2), but do not remove.
    • Slide window glass in longitudinal direction to adjust.
    • Tighten guide rail nuts.
    • Tightening torque, window regulator guide rail to door, 89 in-lb.
  • Vertical adjustment:
    • Adjustments are made with window in open position.
    • Loosen window clamping fasteners (2), but do not remove.
    • Adjust rear clamp and tighten fastener.
    • Tighten front clamp fastener.
    • Raise door window up to stop.
    • Check gap at window front edge (Front of window = 5.4mm, 0.21 in)
    • Check gap at window top edge (Top of window = 10mm, 0.39 in).
    • NOTE: Measure window frame between door window edge and panel.
    • Tightening torque, Window regulator guide rail to door, 89 in-lb.
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  #5  
Old 02-27-2011, 12:13 AM
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bluebee bluebee is offline
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Here is the relevant section from the Bentleys (same as above, except with pictures), pages 872 and 873 of the 1002-page first book.
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  #6  
Old 02-27-2011, 12:21 AM
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ztom ztom is offline
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Location: Thousand Oaks CA
 
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Mein Auto: 1997 528i
Motor is auto shut off just install
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  #7  
Old 02-27-2011, 12:38 AM
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MatWiz MatWiz is offline
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Bluebee, I think he's concern about the electric motor.

Motor: just put the motor in any way it goes in. It will just work fine. There is a (child?) safety feature on the upper window frame that stops the motor when there is pressure on the top of the frame.

Try this: on your front driver side window, put your fist on the top of the glass and switch the window up. Your fist will simulate a child sticking his neck through the window and getting trapped. Notice how the window will stop as soon as there is a little pressure on your fist when it gets trapped.

That's what stops the motor when it goes up. I dont know what stops it on the way down. It just stops.

mw

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  #8  
Old 02-27-2011, 12:48 AM
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bluebee bluebee is offline
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Quote:
Originally Posted by MatWiz View Post
Bluebee, I think he's concern about the electric motor.
Ooops. My bad.

To the OP. Ignore what I said. Sorry.
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  #9  
Old 02-27-2011, 10:07 AM
BMW_GURU BMW_GURU is offline
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Hey Guys,.. You ROCK! That was the information I was looking for. ztom, MatWiz, right on target. If it stops based on the pressure, then it is current limited. I will just install and test carefully. I am not sure this kind of information is usually available. I then do be anal when in comes to knowing exactly how something is to perform.

Thanks again!
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