🔧 Rear Window Regulator - Replacement

The rear door window regulator is the mechanism that raises and lowers the glass. On your Tundra, the door panel must come off first so you can unbolt the regulator, disconnect the motor, and swap the assembly.

Difficulty Level: Intermediate | Estimated Time: 2-4 hours

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⚠️ Safety & Precautions

• Disconnect the negative battery terminal before starting to prevent accidental window movement.
• Keep hands clear of the regulator tracks and glass edges; they can pinch badly.
• Support the window glass with tape once it is loosened so it does not drop.
• Work with the door fully open on a flat surface.
• If your Tundra has rear door side airbags, avoid probing yellow airbag connectors.

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🔧 Required Tools

You'll need the following tools for this repair:

• 10mm socket
• 1/4-inch ratchet
• 1/4-inch extension
• Trim panel removal tool
• Phillips screwdriver
• Flat-head screwdriver
• Plastic pry tool
• Painter's tape
• Torque wrench
• Work gloves
• Safety glasses

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🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Rear window regulator assembly - Qty: 1 per side
• Rear door vapor barrier adhesive - Qty: 1
• Door panel clips - Qty: 1 set
• Window switch bezel clip(s) - Qty: 1 set

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📋 Before You Begin

• Park on level ground and open the rear door fully.
• Lower the window if it still moves, then disconnect the negative battery terminal.
• Have painter's tape ready to hold the glass in place.
• If you are replacing both rear regulators, finish one side completely before starting the other.

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Remove the rear door trim panel

• Use a trim panel removal tool and Phillips screwdriver to remove the screws from the armrest, pull handle area, and any lower fasteners.
• Carefully pop the door panel clips loose with the trim panel removal tool.
• Lift the panel straight up and off the door.
• Unplug the window switch connector and set the panel aside.

Step 2: Remove the moisture barrier

• Use a plastic pry tool to slowly peel back the door vapor barrier.
• Keep the adhesive clean so you can reuse it if possible.
• Do not tear the barrier.

Step 3: Secure the glass

• Use painter's tape to hold the window glass in the full-up position.
• If the glass is already loose, support it with one hand while taping it to the door frame.

Step 4: Disconnect the glass from the regulator

• Use a 10mm socket and 1/4-inch ratchet to remove the glass-to-regulator bolts through the access openings in the inner door panel.
• Carefully slide the glass upward and keep it taped in place.
• Move slowly to avoid cracking the glass.

Step 5: Remove the regulator assembly

• Use a 10mm socket and 1/4-inch extension to remove the regulator and motor mounting bolts.
• Disconnect the window motor electrical connector.
• Rotate and lift the regulator out through the large access opening in the door.

Step 6: Install the new regulator

• Position the new regulator assembly inside the door opening.
• Start all mounting bolts by hand with the 10mm socket and 1/4-inch ratchet.
• Reconnect the motor connector.
• Torque to 8 Nm (71 in-lbs) for the regulator mounting bolts.

Step 7: Reattach the glass

• Lower the taped glass carefully into the regulator clamps.
• Install the glass-to-regulator bolts with the 10mm socket.
• Torque to 8 Nm (71 in-lbs) for the glass clamp bolts.
• Remove the painter's tape and test that the glass sits straight in the tracks.

Step 8: Reassemble the door

• Press the vapor barrier back into place.
• Reconnect the window switch connector and align the door panel.
• Use the trim panel removal tool to snap the clips back in.
• Reinstall all screws with the Phillips screwdriver.

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✅ After Repair

• Reconnect the negative battery terminal.
• Cycle the rear window up and down several times to confirm smooth operation.
• Listen for binding, clicking, or uneven glass movement.
• If the window auto function is lost, fully lower then fully raise the window and hold the switch for 2-3 seconds at each end.

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💰 DIY vs Shop Cost

Shop Cost: $450-$900 (parts + labor)

DIY Cost: $120-$250 (parts only)

You Save: $300-$650 by doing it yourself!

Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 2-4 hours.

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🎯 Ready to get started?

HowToo makes it easy: same-day/2-day shipping on every part, plus all the tools and specialty tools you need! Check out the parts and tools sections below to add everything to your cart.