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  #1  
Old 09-20-2010, 10:20 PM
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Location: Austin, TX
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Default How-to: Window Regulator / Window Motor Repair

Window Regulator / Window Motor Repair


I had the “lucky” fortune to fix the motor in my driver’s side window and then have the regulator break on my passenger’s side window. Since it was my second go, I decided to document the repair. Hopefully this write-up will help others to tackle the job themselves. It’s pretty easy, but slow and requires patience. There’s no need to pay the Land Rover dealer to fix the windows.

Tools Needed
5/16” ratchet (1/4” drive) or similar
Philips head screwdriver (magnetic head is nice)
Torx bit attachment for ratchet (T-30)
Click the image to open in full size.


Also helpful:
Painters tape (for holding up window)
Duct tape or similar for repairing torn plastic sheeting
Panel removal tool
Nitrile gloves (the door adhesive is kind-of goopy)
Patience

Parts Needed (Mail order, eBay or Land Rover dealer)
Broken motor: if you can hear a clicking sound when you depress the window switch but the window doesn't budge there's a good chance your motor is broken. There are two connectors in the OEM motor: a door harness connector and a harness-to-motor connector. The latter was much easier for me to reach. Be warned, though, that the Proline motors don’t have this connector (they are hardwired). So, unless you’re comfortable getting to the door harness connector (which I wasn't) you might want to buy the OEM (Land Rover) motor.

Window regulator: if you hear your motor moving but the window movement is jerky, doesn't move all the way, or makes a cracking sound you probably need a new regulator. There's a left-hand and right-hand version, so make sure you order the correct one. I used the less expensive Proline regulator, and so far it appears to work fine. This photo shows the part that commonly breaks in the regulator.
Click the image to open in full size.

Both parts are readily available at Rovers North and Atlantic British.


--------------------------------------

These are my experiences – use at your own risk!!! If you’re not comfortable with this then pay someone to do it!!!

--------------------------------------

Step #1
Remove the two Philips head screws in the door handle
Click the image to open in full size.


Step #2
Remove the four Philips head screws from the bottom of door map pocket
Click the image to open in full size.


Step #3
Remove one Philip head screw from behind escutcheon (pull back the door handle to get to it). Keeping the door handle pulled back, twist out the escutcheon and remove it
Click the image to open in full size.


Step #4
Using panel removal tool, putty knife or brute force (at your own risk) carefully pry off the panel from the door. In general, you can use more force than you think you should be able to (don’t be afraid of breaking it). Note Step #5, as you’ll have to do both in succession.
Click the image to open in full size.


Step #5
Carefully unclip the woofer and (if available) tweeter plug so that you can fully remove the door panel.
Click the image to open in full size.


Step #6
Carefully peel back the plastic sheeting from the bottom of the door (see photo). I tore it from around the round fasteners – maybe there’s a better way, I don’t know… You only need to be able to get to the bottom section of the door. Once it’s cleared, you might want to use some painters tape to hold it out of the way.
Click the image to open in full size.


Step #7
Using the ratchet with 5/16” head, remove the 4 bolts shown in the pictures
Click the image to open in full size.


Step #8
Again using the ratchet, loosen the 2 bolts shown in the picture (loosen about 80% of the way)
Click the image to open in full size.


Step #9
You may want to tape the window in a middle position to make things easier. Slide the two remaining regulator bolts over and out of the retaining holes. The regulator will be hanging freely off the window at this point.

Step #10
Remove the tape and carefully let the window slide down toward the bottom of the door until you can see the two window bolts holding the regulator to the window. Carefully loosen these two bolts (again with 5/16” ratchet).
Click the image to open in full size.


Step #11
You might want to lift the window 2-3” and again tape it in place. Carefully slide the regulator window track to the right to remove the assembly from the window bolts.

Step #12
Remove the plug from the window motor to release it from the wiring harness. I’ve marked on the photo where the plug is located. You can now carefully collapse the regulator assembly and carefully remove it from the bottom hole in the door.
Click the image to open in full size.


Step #13
Depending upon whether you are replacing the regulator or the motor, use a torx bit to remove the 3 torx screws from the existing motor.
Click the image to open in full size.


Step #14
Swap the motor/regulator (whichever is broken) to the new motor (or new regulator) reusing the existing torx screws.
Click the image to open in full size.


Step #15
Work backwards starting with Step #14 above steps to reinstall everything. You might want to use duct tape or a similar sealant to repair tears in the plastic sheeting if you made a mess of the removal.

Step #16
Test out your newly repaired window. Take pride in a job well done. Drive around the block with the windows down and smile.
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2012 Acura MDX Tech (sigh... I miss the Discovery, but not the maintenance)
2006 Lancer Evolution IX (modified, 400+ HP)
2003 Discovery SE (sold)

Last edited by RedAustinIX; 09-21-2010 at 07:47 AM.
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  #2  
Old 09-21-2010, 06:46 AM
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Nice write up.
Getting the plug for the motor is tricky, use some of that patience.
Those torx screws are a bitch and they strip, I used same sized allen screws to put it back.
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  #3  
Old 09-21-2010, 08:34 AM
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Sticky please!!!
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  #4  
Old 09-29-2010, 07:40 PM
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Thanks much this was a great help!

A few more tips:

1. Perform Step 10 before Steps 7-9. As posted on another thread: "Lower window to align bolts with access holes so regulator can be disconnected from window. Loosen 2 bolts, move slide slightly to disconnect glass from regulator. Raise glass to top of frame and secure in place with duct tape over the top of frame." Same for re-assembly: re-mount the regulator/motor assembly before attaching the window.

2. Look at the picture in Step 8. The motor wire connector is right there inside the round hole!! Flip up the connector tab on top of the connector with a screw driver and the connector slides out to the left. Note: for re-assembly it seemed easier to put the connector on before remounting the regulator/motor assembly.

______________
2002 Discovery SE Westminster 92K
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  #5  
Old 10-06-2010, 03:58 PM
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Thanks for this, my passenger side window has been goofy (will roll down but not up, and I can pull it up and it will stay in place). Sounds like it's the regulator from your description, will be trying this soon and will report back with results.
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Old 10-06-2010, 08:18 PM
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Quote:
Originally Posted by CoRova View Post
Thanks much this was a great help!

A few more tips:

1. Perform Step 10 before Steps 7-9. As posted on another thread: "Lower window to align bolts with access holes so regulator can be disconnected from window. Loosen 2 bolts, move slide slightly to disconnect glass from regulator. Raise glass to top of frame and secure in place with duct tape over the top of frame." Same for re-assembly: re-mount the regulator/motor assembly before attaching the window.

2. Look at the picture in Step 8. The motor wire connector is right there inside the round hole!! Flip up the connector tab on top of the connector with a screw driver and the connector slides out to the left. Note: for re-assembly it seemed easier to put the connector on before remounting the regulator/motor assembly.

______________
2002 Discovery SE Westminster 92K
hey, i have an ignorant lazy question. As my driver front regulater plastic roller has broken (just the one: the left one if looking frm the inside of vehicle). The window still seals like it should and goes up and down smooth as it should with out the one plastic roller.

Can I just grease the hell out of it and leave it as it is (with out the plastic roller)? Or will it cause problems in the future?
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  #7  
Old 10-07-2010, 08:01 AM
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Quote:
Originally Posted by southern_disco View Post
Thanks for this, my passenger side window has been goofy (will roll down but not up, and I can pull it up and it will stay in place). Sounds like it's the regulator from your description, will be trying this soon and will report back with results.
That's what mine was doing too. Motor was running fine in both directions (took it out and hot wired to battery). Regulator looked fine. I replaced the motor assembly and it worked; so I conclude it was the round gear housing (comes with the motor) that sits on top of the motor.

Last edited by CoRova; 10-07-2010 at 08:10 AM.
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  #8  
Old 10-07-2010, 11:14 AM
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Default Nicely done.

Quote:
Originally Posted by ewok View Post
Sticky please!!!
X2
Exactly what I was thinking.
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  #9  
Old 10-07-2010, 11:46 AM
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Quote:
Originally Posted by CoRova View Post
That's what mine was doing too. Motor was running fine in both directions (took it out and hot wired to battery). Regulator looked fine. I replaced the motor assembly and it worked; so I conclude it was the round gear housing (comes with the motor) that sits on top of the motor.
Nice, I'll keep this in mind. Appreciate it
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  #10  
Old 10-07-2010, 01:21 PM
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Quote:
Originally Posted by Memroyfoam View Post
hey, i have an ignorant lazy question. As my driver front regulater plastic roller has broken (just the one: the left one if looking frm the inside of vehicle). The window still seals like it should and goes up and down smooth as it should with out the one plastic roller.

Can I just grease the hell out of it and leave it as it is (with out the plastic roller)? Or will it cause problems in the future?
In my experience the plastic piece held a metal pin inside the regulator track. So, it could work for a while but I think it would eventually pop out of the track and then you're out of luck. I don't think that greasing would really make a difference -- it's either locked inside the track or it isn't.

I think some people have been able to repair the plastic roller (there might be some threads on this forum), but I was lazy and just bought a new one.

My parting comments are: while what you suggested may work, do you really want to risk doing that and then risk being stuck with a window that won't close at some inopportune time (raining, snowing, etc)?

Hope this helps!
Ed (RedAustinIX)
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2006 Lancer Evolution IX (modified, 400+ HP)
2003 Discovery SE (sold)
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Old 10-07-2010, 01:21 PM
 
 
 
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1999, 2004, discovery, fix, how, ii, land, mechanism, motor, rapair, regulator, remove, repair, rover, window


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