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How To Replace Rear Window Regulator?

Posted by Mariios on March 25, 2024

Many modern cars have a power rear window regulator, allowing them to open or close the rear window with a button easily. Unfortunately, this rear window regulator is prone to damage and may need to be replaced.

To replace the rear window regulator, remove the door panel, disconnect the electrical connectors and window switch, and unbolt the regulator. Then, detach the window from the regulator and install the new regulator, reattaching the window and bolting everything back together. Finally, test the window's functionality before reattaching the door panel. 

Step-by-Step Guide on Replacing Rear Window Regulator

Step 1: Access the Rear Door:

To access the rear door, follow these steps: 

  • Start by opening the rear door and ensuring you have enough space to work comfortably. 
  • If your car has power windows, ensure the battery is disconnected to prevent accidental activation.

Step 2: Remove the Door Panel:

With the rear door accessible, the next step is to remove the door panel. 

  • Look for screws or fasteners holding the panel in place. They are usually located along the edges and possibly behind covers or trim pieces. 
  • Use a screwdriver or trim removal tool to carefully pry off the panel, being mindful not to damage it or the clips holding it in place. 
  • Once all the screws and clips are removed, gently lift the panel away from the door frame and set it aside in a safe place.

Step 3: Access the Regulator:

After removing the door panel: 

  • Peel back the moisture barrier to access the inner workings of the door. The moisture barrier is usually a plastic or rubber sheet attached to the door frame with adhesive
  • Carefully peel back the barrier, not tearing it, as you'll need to reattach it later.

Step 4: Detach the Window:

  • You can now detach the window from the regulator with access to the inner door cavity. Start by securing the window using tape or wedges to prevent it from falling.
  • Disconnect any electrical connectors or bolts securing the window to the regulator. 

Note: This step may vary depending on the type of window mechanism in your vehicle, so consult your service manual if you're unsure.

Step 5: Remove the Old Regulator:

Once the window is detached, you can remove the old regulator. Here’s how you can do that:

  • Locate the bolts or screws holding the regulator to the door frame and carefully remove them. 
  • You may need to maneuver the regulator out of the door cavity, so take your time and be gentle to avoid damaging any surrounding components.

Step 6: Install the New Regulator:

The next step in replacing the rear window regulator is to install the new regulator.

  • Position the new regulator in place and align it with the mounting holes in the door frame. 
  • Secure the regulator using the bolts or screws you removed earlier, ensuring it's firmly attached.

Step 7: Reattach the Window:

After installing the new regulator, it's time to reattach the window. 

  • Align the window with the regulator and secure it back into place using the appropriate bolts or clips. 
  • Double-check that the window moves smoothly up and down without any obstructions.

Step 8: Test the Operation:

Once the window is reattached:

  • Reconnect any electrical connectors and test the window's operation. 
  • Use the window switch to raise and lower it, ensuring it moves smoothly and without unusual noises. 
  • If everything looks good, you're ready to move on to the final step!

Last Step: Reassemble the Door:

Here’s what you have to do:

  • Start by reattaching the moisture barrier, ensuring it's properly sealed to prevent any water leaks. 
  • Then, carefully position the door panel back onto the door frame, making sure all the clips and screws line up correctly. 
  • Once the panel is in place, secure it with the screws or fasteners you removed earlier. 
  • Finally, reconnect any electrical connectors and trim pieces.
  • You're done!

Replacing a rear window regulator can be a bit tricky, but with patience and attention to detail, you can complete the job easily! However, if you need help to do it, you should get a professional rear window regulator replacement service.

At Blue Diamond Auto Glass, we understand the importance of a properly functioning rear window regulator. Our expert technicians can help diagnose issues and provide efficient rear window replacement and installation services at affordable prices.

Frequently Asked Questions

Q1: How much does it cost to replace a rear window regulator?

The rear window regulator replacement cost depends on the car make and model, plus labor costs if you hire a mechanic.

Q2: How do I know if my car window regulator is bad?

Common signs include slow or erratic movement of the window, strange noises like grinding or clicking, or the window not staying in its raised position.

Q3: How do I know if I need to replace the window motor or the regulator?

If the window doesn't move at all, it's likely the motor. If it moves but struggles or makes noise, it's probably the regulator.

March 25, 2024
Written by
Blue Diamond Auto Glass
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