🔧 Altima - Rear Window Regulator Replacement

This repair replaces a failed rear door window regulator, which is the scissor/cable mechanism that raises and lowers the glass. On your Altima, the rear door panel must come off, the glass must be secured, and the regulator/motor assembly is removed through the door opening.

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

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⚠️ Safety & Precautions

• ⚠️ Support the window glass before removing the regulator. The glass can drop suddenly and break.
• ⚠️ Disconnect the negative battery cable before unplugging door electrical connectors.
• ⚠️ Wear gloves because the inside of the door shell has sharp metal edges.
• ⚠️ Do not slam the door while the glass is taped or unsecured.
• ⚠️ Keep the plastic water shield intact. It prevents rainwater from entering the cabin.

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🔧 Required Tools

You'll need the following tools for this repair:

• 10mm socket
• Ratchet with 3/8-inch drive
• 6-inch socket extension with 3/8-inch drive
• Phillips #2 screwdriver
• Small flat-blade screwdriver
• Plastic trim removal tool set
• Needle-nose pliers
• Torque wrench rated 5-25 Nm
• Painter’s tape 2-inch wide
• Shop towels
• Nitrile gloves
• Safety glasses

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🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Rear window regulator with motor assembly - Qty: 1 per door
• Rear door trim panel clips - Qty: As needed
• Butyl sealing tape for water shield - Qty: 1 roll if original seal is damaged

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📋 Before You Begin

• Park your Altima on level ground and turn the ignition OFF.
• Open the rear door you are repairing fully.
• If the window still moves, use the switch to position the glass about halfway down so you can access the glass clamp bolts.
• If the window does not move, you may need to manually lift or lower the glass after the door panel is removed.
• Disconnect the negative battery cable using a 10mm socket. Wait at least 1 minute before unplugging door connectors.
• A trim removal tool is a plastic pry tool that helps remove panels without scratching the door.
• Butyl tape is a sticky black sealing rope used to reseal the plastic water shield.

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Remove the Rear Door Switch Trim

• Use a plastic trim removal tool to gently pry up the rear window switch trim from the armrest.
• Lift the trim just enough to access the connector.
• Use a small flat-blade screwdriver to press the connector lock tab, then unplug the switch.
• Go slow to avoid broken clips.

Step 2: Remove Door Panel Fasteners

• Use a Phillips #2 screwdriver to remove the screw inside the pull handle area, if equipped.
• Use a small flat-blade screwdriver to open any small screw covers near the interior door handle.
• Use a Phillips #2 screwdriver or 10mm socket to remove the exposed fasteners.
• Place all screws in a cup or tray so they do not get lost.

Step 3: Release the Door Panel Clips

• Use a plastic trim removal tool at the lower edge of the door panel.
• Pop the panel clips loose one at a time around the sides and bottom.
• Lift the door panel straight upward to unhook it from the window ledge.
• Use needle-nose pliers to release the interior handle cable ends if they remain attached.
• Set the door panel on a clean towel.

Step 4: Peel Back the Water Shield

• Use your gloved hands and a plastic trim removal tool to carefully peel back the plastic water shield.
• Do not tear it. You will reuse it.
• If the black sealer stretches, use shop towels to keep it off the upholstery.
• Keep the shield clean and sticky.

Step 5: Reconnect Power Temporarily If Needed

• If the window still works, reconnect the window switch connector by hand.
• Reconnect the negative battery cable using a 10mm socket.
• Turn the ignition ON and move the glass until the glass clamp bolts line up with the door access holes.
• Turn the ignition OFF and disconnect the negative battery cable again using a 10mm socket.
• If the regulator is completely failed, skip motor movement and access the glass bolts manually through the opening.

Step 6: Secure the Window Glass

• Use painter’s tape 2-inch wide to tape the glass to the outside upper door frame.
• Run at least 3 long strips from the outside glass over the top of the door frame and onto the inside glass.
• Use your hands to gently push the glass fully upward before taping if it is loose.
• Use more tape than you think.

Step 7: Detach the Glass from the Regulator

• Use a 10mm socket, 6-inch socket extension, and ratchet to loosen the two glass-to-regulator bolts through the door access holes.
• Do not remove the bolts completely unless required by the replacement design.
• Lift the glass fully upward by hand and confirm the tape is holding it securely.
• For installation later, tighten these bolts to Torque to 6 Nm (53 in-lbs).

Step 8: Unplug the Window Motor

• Use a small flat-blade screwdriver to press the window motor connector lock tab.
• Pull the connector straight out by the connector body, not by the wires.
• Move the harness aside so it does not snag during removal.

Step 9: Remove the Regulator Assembly

• Use a 10mm socket, 6-inch socket extension, and ratchet to remove the regulator mounting bolts.
• Use the same 10mm socket to remove the motor mounting bolts if the motor is bolted separately to the door shell.
• Support the regulator with one hand as the last bolt comes out.
• Remove the regulator and motor assembly through the large door opening.
• For installation later, tighten regulator and motor mounting bolts to Torque to 8 Nm (71 in-lbs).

Step 10: Install the New Regulator

• Feed the new rear window regulator with motor assembly into the door through the large opening.
• Use your hands to line up the regulator and motor mounting holes.
• Start all bolts by hand first to avoid cross-threading.
• Use a 10mm socket, 6-inch socket extension, and ratchet to snug the bolts.
• Use a torque wrench rated 5-25 Nm and 10mm socket to tighten the bolts to Torque to 8 Nm (71 in-lbs).

Step 11: Reattach the Glass

• Use your hands to carefully lower the taped glass into the regulator glass clamps or mounting points.
• Make sure the glass sits squarely in both clamps.
• Use a 10mm socket to snug the glass bolts.
• Use a torque wrench rated 5-25 Nm and 10mm socket to tighten the glass bolts to Torque to 6 Nm (53 in-lbs).
• Remove the painter’s tape 2-inch wide from the glass and door frame.

Step 12: Test Window Operation Before Reassembly

• Reconnect the motor connector by hand until it clicks.
• Reconnect the rear window switch connector by hand.
• Reconnect the negative battery cable using a 10mm socket.
• Turn the ignition ON and operate the rear window switch.
• Watch the glass travel fully up and fully down without binding, tilting, or clicking.
• If the glass binds, turn the ignition OFF and loosen the glass bolts with a 10mm socket, realign the glass, then retighten to Torque to 6 Nm (53 in-lbs).

Step 13: Reinstall the Water Shield

• Turn the ignition OFF.
• Use your hands to press the plastic water shield back onto the original sealer.
• If the original sealer no longer sticks, apply butyl sealing tape for water shield around the edge.
• Press firmly around the full shield perimeter to prevent water leaks.

Step 14: Reinstall the Door Panel

• Reconnect the interior handle cables by hand if removed.
• Hang the door panel over the top window ledge by hand.
• Line up the panel clips with their holes.
• Use the palm of your hand to press the clips into place around the panel.
• Use a Phillips #2 screwdriver or 10mm socket to reinstall the door panel fasteners.
• Do not overtighten trim screws; tighten them snug only.

Step 15: Reinstall the Switch Trim

• Plug the rear window switch connector in by hand until it clicks.
• Set the switch trim into the armrest opening.
• Press it down by hand until the clips lock into place.

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✅ After Repair

• Run the rear window fully down and fully up 3 times from the rear door switch.
• Test the same window from the driver master switch.
• Check that the door lock, interior handle, speaker, and switch all work.
• Spray a small amount of water over the outside glass area and check the inside lower door area for leaks.
• If the battery was disconnected, reset the clock and any radio presets if needed.

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💰 DIY vs Shop Cost

Shop Cost: $350-$650 per rear door, including parts and labor

DIY Cost: $90-$220 per rear door, parts only

You Save: $260-$430 by doing it yourself!

Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 1.2-2.0 hours.

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🎯 Ready to get started?

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