🔧 Wrangler - Rear Window Regulator Replacement

This repair replaces the rear side window regulator, which is the mechanism inside the door that moves the glass up and down. On your Wrangler, the rear door trim panel must be removed, the glass must be supported, and the regulator is then unbolted from inside the door.

Assumption: This applies to a 4-door Wrangler Unlimited rear side door, not the rear liftgate glass.

Difficulty Level: Beginner-Intermediate | Estimated Time: 1.5-2.5 hours per side

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⚠️ Safety & Precautions

• ⚠️ Disconnect the negative battery cable before unplugging the window motor connector.
• ⚠️ Support the glass before removing regulator bolts. Door glass can drop suddenly and break.
• ⚠️ Wear safety glasses and mechanic gloves when working around glass and sharp door metal.
• ⚠️ Do not slam the door while the trim panel or regulator is removed.
• ⚠️ Keep fingers away from the regulator arms and cable path when testing the motor.

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🔧 Required Tools

You'll need the following tools for this repair:

• 10mm socket
• 8mm socket
• Ratchet wrench 3/8-inch drive
• Extension 3-inch 3/8-inch drive
• Torx T20 screwdriver
• Torx T30 screwdriver
• Trim removal tool set
• Small flathead screwdriver
• Phillips #2 screwdriver
• Needle-nose pliers
• Painter’s tape
• Suction cup glass holder
• Flashlight
• Torque wrench inch-pound 1/4-inch drive
• Safety glasses
• Mechanic gloves

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🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Rear window regulator with motor - Qty: 1 per door
• Rear door trim panel clips - Qty: As needed
• Butyl sealing tape - Qty: 1 roll

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📋 Before You Begin

• Park your Wrangler on level ground and set the parking brake.
• Lower or raise the rear window until the glass-to-regulator fasteners are visible through the inner door access openings.
• If the window will not move, you may need to manually position the glass after the trim panel is removed.
• Disconnect the negative battery cable using a 10mm socket before unplugging the window switch or motor connector.
• A regulator is the scissor or cable-style mechanism that physically lifts the window glass.
• Butyl sealing tape is a sticky black sealant used to reseal the plastic water shield behind the door panel.

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Prepare the Door

• Open the rear door fully.
• Use painter’s tape along the painted upper door edge to help protect the paint.
• Use a 10mm socket and ratchet wrench to loosen the negative battery terminal.
• Move the negative battery cable aside so it cannot touch the battery post.

Step 2: Remove the Rear Door Trim Screws

• Use a Torx T20 screwdriver to remove small trim screws around the door pull or handle bezel if equipped.
• Use a Phillips #2 screwdriver to remove any exposed Phillips screws in the door trim panel.
• Use a small flathead screwdriver to gently lift small screw covers if present.
• Tip: Put screws in a cup.

Step 3: Remove the Rear Door Trim Panel

• Use a trim removal tool set to pry the lower edge of the door panel outward.
• Work around the sides of the panel, releasing one plastic clip at a time.
• Lift the panel upward to unhook it from the window ledge.
• Support the panel with one hand so wiring is not pulled tight.

Step 4: Disconnect Door Panel Wiring

• Use a small flathead screwdriver to press the lock tab on the window switch connector.
• Pull the connector straight out by the plastic connector body.
• Use needle-nose pliers only if a connector is difficult to grip.
• Set the door panel on a soft surface.

Step 5: Peel Back the Water Shield

• Use a trim removal tool set to gently start peeling the plastic water shield away from the door.
• Do not tear the shield. It keeps rainwater away from the interior trim.
• Use a small flathead screwdriver to separate old butyl sealing tape only where needed.
• Leave part of the shield attached if possible so it lines back up easily.

Step 6: Support the Window Glass

• Slide the glass to the closed position by hand if the regulator has failed.
• Use painter’s tape from the outside of the glass over the top of the door frame to hold the glass up.
• Use a suction cup glass holder on the glass for extra support.
• Do not rely on tape alone if the glass feels loose.

Step 7: Disconnect the Glass from the Regulator

• Use a flashlight to locate the glass clamp or glass channel fasteners through the door access openings.
• Use a 10mm socket with a 3-inch extension and ratchet wrench to loosen the glass fasteners.
• Do not remove the glass fasteners unless required by the replacement design.
• Carefully separate the regulator from the glass while keeping the glass taped up.

Step 8: Unplug the Window Motor

• Use a small flathead screwdriver to release the window motor electrical connector lock tab.
• Pull the connector straight off the motor.
• Move the wiring harness aside so it does not snag when the regulator comes out.

Step 9: Remove the Regulator Mounting Bolts

• Use a 10mm socket with a 3-inch extension and ratchet wrench to remove the regulator mounting bolts.
• Use an 8mm socket if your replacement fastener size or motor bracket uses smaller bolts.
• Hold the regulator with one hand while removing the last bolt.
• Tip: Note each bolt location.

Step 10: Remove the Old Regulator

• Rotate the regulator slightly inside the door to clear the access opening.
• Use mechanic gloves because the door shell edges can be sharp.
• Guide the motor and regulator assembly out through the largest opening in the inner door.
• Compare the old rear window regulator with the new part before installing it.

Step 11: Install the New Regulator

• Feed the new rear window regulator into the door through the access opening.
• Line up the regulator mounting holes with the door.
• Start all bolts by hand first.
• Use a 10mm socket and ratchet wrench to snug the regulator mounting bolts.
• Use a torque wrench inch-pound 1/4-inch drive with a 10mm socket to tighten the regulator bolts to Torque to 9 Nm (80 in-lbs).

Step 12: Reconnect the Window Motor

• Push the window motor electrical connector onto the motor by hand.
• Listen for the connector lock tab to click.
• Make sure the harness is routed away from moving regulator parts.

Step 13: Attach the Glass to the Regulator

• Carefully lower the glass by hand until it seats into the regulator clamp or channel.
• Use a 10mm socket with a 3-inch extension to tighten the glass fasteners.
• Use a torque wrench inch-pound 1/4-inch drive with a 10mm socket to tighten the glass fasteners to Torque to 8 Nm (71 in-lbs).
• Remove the suction cup glass holder only after the glass is secured.

Step 14: Test the Window Before Reassembly

• Reconnect the negative battery cable using a 10mm socket.
• Torque to 5 Nm (44 in-lbs) on the battery terminal nut.
• Temporarily plug in the rear window switch connector by hand.
• Run the window fully down and fully up while watching the glass track.
• If the glass tilts or binds, stop and loosen the glass fasteners with a 10mm socket, realign the glass, and retighten.

Step 15: Reseal the Water Shield

• Disconnect the negative battery cable again using a 10mm socket before final trim work.
• Press the water shield back into place by hand.
• Use butyl sealing tape to repair any gaps or torn seal areas.
• Make sure the bottom of the shield is sealed so water drains inside the door, not into the cabin.

Step 16: Reinstall the Rear Door Trim Panel

• Reconnect the window switch connector by hand until it clicks.
• Hang the top of the door panel over the window ledge.
• Press around the edges by hand to snap the trim clips into the door.
• Use a Torx T20 screwdriver or Phillips #2 screwdriver to reinstall the trim screws.
• Tighten small trim screws to Torque to 2-3 Nm (18-27 in-lbs).

Step 17: Final Battery Connection

• Use a 10mm socket and ratchet wrench to reconnect the negative battery cable.
• Tighten the terminal nut to Torque to 5 Nm (44 in-lbs).
• Close the door and test the window again from the rear switch and driver master switch.

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✅ After Repair

• ✅ Run the rear window fully up and down at least 5 times.
• ✅ Listen for scraping, clicking, or cable popping sounds.
• ✅ Spray a small amount of water on the outside of the window and check inside the door panel area for leaks.
• ✅ Confirm the rear door locks, opens, and closes normally after trim reinstallation.
• ✅ If the glass moves slowly, clean the vertical window channels with a dry cloth; do not soak them with lubricant.

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💰 DIY vs Shop Cost

Shop Cost: $300-$600 per rear door (parts + labor)

DIY Cost: $70-$220 per rear door (parts only)

You Save: $230-$380 per rear door by doing it yourself!

Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 1-1.5 hours per door.

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