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Replacing Your Audi A4 Rear Window Regulator
 
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Pelican Technical Article:

Replacing Your Audi A4 Rear Window Regulator

Steve Vernon

Time:

3 hours3 hrs

Tab:

$170

Talent:

***

Tools:

T45, T30, T27, T25 Torx driver, Philips head screwdriver, needle nose pliers, trim removal tool

Applicable Models:

Audi A4 (2002-05)

Parts Required:

New regulator

Hot Tip:

Check the function before reinstalling the door panel

Performance Gain:

Windows that work

Complementary Modification:

Really clean the glass

If your rear windows are starting to make funny noises when you put them up or down, binding or not running smoothly all the way through the range of motion, there is a good chance your window regulator is starting to fail. It is a good idea to replace the regulator before it fails completely, because there is no way to get the window back up into the closed position once it fails short of replacing the regulator. If you are having troubles with your rear door window regulator and it needs to be replaced, this article will take you through the process step by step.

Unlike a lot of other vehicles, the window regulator is attached to the window frame. The entire frame assembly must be removed to replace the regulator.

To begin, you will need to remove the door panel. Please see our article on removing your rear door panel and complete the work there before starting this project.

This photo illustrates the door with the door panel off.
Figure 1

This photo illustrates the door with the door panel off. You are going to start with removing the speaker (red arrow), the regulator motor and then the weather protective shield (green arrow).

Begin by squeezing in the two tabs on the speaker connection (red arrows) and pulling it out from the speaker.
Figure 2

Begin by squeezing in the two tabs on the speaker connection (red arrows) and pulling it out from the speaker.

Using a Philips head screwdriver, remove the three screws (red arrows, two shown) and then the speaker from the door.
Figure 3

Using a Philips head screwdriver, remove the three screws (red arrows, two shown) and then the speaker from the door.

Next, you will want to remove the window regulator motor.
Figure 4

Next, you will want to remove the window regulator motor. Use a T25 Torx and remove the three screws (red arrows) holding it to the regulator.

Disconnect the wiring connections (red arrow) from the motor and remove it from the door.
Figure 5

Disconnect the wiring connections (red arrow) from the motor and remove it from the door. The connections can only fit one way into the motor, so you do not need to worry about labeling them.

Clip the small zip tie holding the wiring to the door frame (red arrow).
Figure 6

Clip the small zip tie holding the wiring to the door frame (red arrow).

Carefully peel back the weather proof membrane (red arrow).
Figure 7

Carefully peel back the weather proof membrane (red arrow). It is glued to the door. If you use a razor blade and take your time, you can remove it without damaging it and reuse it on reassembly.

If you bought the car used, sometimes repairs like this have already been performed and often not everything is put back or done properly.
Figure 8

If you bought the car used, sometimes repairs like this have already been performed and often not everything is put back or done properly. This was the case with our project car. There should be a protective plate up towards the top center of the panel by the green part of the regulator. This is held in place with two screws (red arrows). If you still have this panel, remove it now. Next, you need to free the regulator mechanism from the doorframe (yellow arrow).

Use a set of needle nose pliers or a small flathead screwdriver and squeeze in the three posts (red arrows) and push the mechanism into the door frame.
Figure 9

Use a set of needle nose pliers or a small flathead screwdriver and squeeze in the three posts (red arrows) and push the mechanism into the door frame.

Here is another example of components not replaced by the previous owner.
Figure 10

Here is another example of components not replaced by the previous owner. There is a foam insert that goes along the end of the door frame and under the red arrow. If you have this piece, you can just remove it. You now need to peel back the weather stripping from the upper section of the door frame; it easily just pulls out from the channel. At some point in the past someone just cut the door seal (yellow arrow) so they would not need to remove it; we do not recommend this method.

Pull the end of the weather protective flap from the two retaining holes in the door (red arrow).
Figure 11

Pull the end of the weather protective flap from the two retaining holes in the door (red arrow).

Remove the rubber cap and using a T45 Torx remove the large Torx screw (red arrow); next, remove the other T45 Torx (yellow arrow).
Figure 12

Remove the rubber cap and using a T45 Torx remove the large Torx screw (red arrow); next, remove the other T45 Torx (yellow arrow).

Remove the single T30 Torx screw below the lock (red arrow).
Figure 13

Remove the single T30 Torx screw below the lock (red arrow).

The front of the door was the same as the rear.
Figure 14

The front of the door was the same as the rear. There is a foam insert that goes along the end of the door frame and under the red arrow. If you have this piece, you can just remove it. You now need to peel back the weather stripping from the upper section of the door frame; it easily just pulls out from the channel. At some point in the past someone just cut the door seal (yellow arrow) so they would not need to remove it; we do not recommend this method.

Remove the rubber cap and using a T45 Torx remove the large Torx screw (red arrow); next, remove the other T45 and T30 Torx screws (yellow arrows).
Figure 15

Remove the rubber cap and using a T45 Torx remove the large Torx screw (red arrow); next, remove the other T45 and T30 Torx screws (yellow arrows).

Pull the end of the weather protective flap from the two retaining holes in the door (red arrow).
Figure 16

Pull the end of the weather protective flap from the two retaining holes in the door (red arrow).

Use a T25 Torx and remove the single screw holding the bottom of the regulator to the doorframe (red arrow).
Figure 17

Use a T25 Torx and remove the single screw holding the bottom of the regulator to the doorframe (red arrow).

Gently pull the upper doorframe up and out from the door and lay it on a safe flat surface.
Figure 18

Gently pull the upper doorframe up and out from the door and lay it on a safe flat surface. You can see the window regulator mechanism (red arrow).

Use a T25 Torx and remove the two screws that hold the glass in place on the regulator (red arrows).
Figure 19

Use a T25 Torx and remove the two screws that hold the glass in place on the regulator (red arrows).

Carefully lift the clip on the bottom of the glass over the regulator and slide the glass down and out from the frame (red arrows).
Figure 20

Carefully lift the clip on the bottom of the glass over the regulator and slide the glass down and out from the frame (red arrows). Place the glass in a safe area.

You can now remove the single T25 screws holding the regulator to the window frame (red arrow).
Figure 21

You can now remove the single T25 screws holding the regulator to the window frame (red arrow).

Installation of the new regulator is the reverse of removal.
Figure 22

Installation of the new regulator is the reverse of removal. Use care when installing the glass and be sure to check the function of the regulator and motor by attaching the wiring from the window control before reinstalling the panel.





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Comments and Suggestions:
Dan Comments: These intructions do not help at all for a 2003 cabriolet to remove the rear regulator. Its completely different. Do you have specific instructions for a 2003 a4 cabriolet. I can not get the backrest of the back seat out because I cant get the hradrest tubes out ?
May 22, 2016
  Followup from the Pelican Staff: If they don't apply, then we don't currently have that tech article. If we get a chance to perform the procedure, we will be sure to document it.

I would grab a repair manual. It will have the procedure, special tools and torque specs.

Give our parts specialists a call at 1-888-280-7799. - Nick at Pelican Parts
 

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