🔧 F-350 Super Duty - Rear Window Regulator Replacement

You’ll remove the rear door trim panel, detach the window glass from the regulator, then swap the regulator/motor assembly. This fixes a window that won’t move, moves crooked, clicks, or drops into the door.

Difficulty Level: Intermediate | Estimated Time: 1.5-3.0 hours (per rear door)

Assumption: “Rear window regulator” = rear door window regulator (not the back glass).

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⚠️ Safety & Precautions

• ⚠️ Disconnect the negative battery cable before unplugging door wiring to reduce short/airbag risks.
• ⚠️ Window glass can drop suddenly—support it with painter’s tape and/or suction cups before unbolting it.
• ⚠️ Wear gloves—door inner panels have sharp edges.
• ⚠️ Keep the vapor barrier intact (water leaks if torn).

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🔧 Required Tools

You'll need the following tools for this repair:

• Safety glasses
• Mechanic gloves
• Trim removal tool set (plastic)
• Small flat-blade screwdriver
• Phillips screwdriver
• 1/4" drive ratchet
• 3/8" drive ratchet
• 7mm socket
• 8mm socket
• 10mm socket
• Torx T20 bit
• Torx T25 bit
• Torque wrench (inch-pound)
• Needle-nose pliers
• Painter’s tape (1.5" wide)
• Glass suction cups (pair) (specialty)
• Pick tool
• Work light
• Drill with 1/4" drill bit
• Rivet gun (heavy-duty) (specialty)

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🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Rear door window regulator with motor - Qty: 1
• Door panel trim clips - Qty: 6-12
• Vapor barrier butyl tape - Qty: 1
• Regulator mounting rivets or bolts kit - Qty: 1

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📋 Before You Begin

• Park on level ground, shift to Park, and turn the ignition off.
• Lower the rear window to about halfway if it still moves (this exposes the glass-to-regulator fasteners).
• Use a 10mm socket to disconnect the negative battery cable and isolate it.
• Set a towel over the door sill to protect paint and trim.

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Remove the rear door trim panel

• Use a trim removal tool set (plastic) to gently pry up the window switch bezel, then unplug the switch connector.
• Use a pick tool to lift out any small screw covers in the pull handle/armrest area.
• Remove screws using a 7mm socket and/or Torx T20 bit (fastener types vary by handle).
• Use a trim removal tool set (plastic) to pop the door panel clips around the perimeter.
• Lift the panel straight up to unhook it from the window ledge, then disconnect any remaining connectors.

Step 2: Remove the moisture barrier (vapor barrier)

• Use a trim removal tool set (plastic) to peel the vapor barrier back slowly.
• If the butyl stretches, use needle-nose pliers to pull it off in strands.
• Keep it clean; you’ll reseal it later.

Step 3: Support the window glass

• Apply painter’s tape (1.5" wide) in multiple strips from the outside of the glass over the door frame to hold the glass up.
• If available, attach glass suction cups (pair) (specialty) to stabilize the glass while you work.

Step 4: Detach the glass from the regulator

• Look through the access holes and locate the glass clamps/bolts on the regulator track.
• If the regulator is stuck and you can’t see the bolts, plug the window switch back in temporarily and reconnect the battery just long enough to “bump” the window to a better position, then disconnect the battery again using a 10mm socket.
• Remove the glass-to-regulator fasteners using a 10mm socket.
• Carefully slide the glass all the way up by hand and add more painter’s tape (1.5" wide) to secure it.
• Torque on reassembly: Torque to 9 Nm (80 in-lbs)

Step 5: Unplug the window motor and free the harness

• Unplug the regulator motor electrical connector (press the lock tab) using a small flat-blade screwdriver if needed.
• Release any wiring clips from the door using a trim removal tool set (plastic).

Step 6: Remove the regulator/motor assembly

• Remove the regulator mounting bolts using an 8mm socket and/or 10mm socket (some versions use rivets instead of bolts).
• If your regulator is riveted in:
  • Use a drill with 1/4" drill bit to drill the rivet heads off.
  • Support the assembly so it doesn’t drop inside the door.
• Angle the regulator out through the large access opening and remove it from the door.
• Torque on reassembly: Torque to 9 Nm (80 in-lbs)

Step 7: Install the new regulator

• Feed the new regulator into the door and align it with the mounting holes.
• Install mounting bolts using an 8mm socket and/or 10mm socket, or install rivets using a rivet gun (heavy-duty) (specialty).
• Reconnect the motor connector firmly until it clicks.
• Torque: Torque to 9 Nm (80 in-lbs) (for bolted regulators)

Step 8: Reattach the glass to the regulator

• Reconnect the battery negative cable using a 10mm socket.
• Plug the window switch in temporarily and turn ignition to ON.
• Move the regulator to line up with the glass clamp points, then turn ignition OFF and disconnect the battery again using a 10mm socket.
• Lower the glass carefully into the clamps and install the fasteners using a 10mm socket.
• Remove the tape and reconnect the battery negative cable using a 10mm socket.
• Torque: Torque to 9 Nm (80 in-lbs)

Step 9: Function test before reassembly

• Turn ignition ON and run the window fully down, then fully up.
• Listen for popping/clicking and watch for the glass tilting (a sign the glass isn’t seated in the clamps).
• Unplug the switch again before reinstalling trim.

Step 10: Reinstall the vapor barrier and door panel

• Press the vapor barrier back into place; add vapor barrier butyl tape where the seal is damaged.
• Reconnect all electrical connectors.
• Hook the door panel on the top ledge first, then press clips in around the edges by hand.
• Reinstall screws using a 7mm socket and/or Torx T20 bit, then reinstall trim covers using a trim removal tool set (plastic).
• Torque: Torque to 2 Nm (18 in-lbs) (small interior trim screws)

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✅ After Repair

• Cycle the rear window 5-10 times. It should move smoothly and quietly.
• Check the door for rattles on a short drive; re-seat any loose trim clips if needed.
• Verify the vapor barrier is sealed all the way around (prevents water leaks onto carpet).

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💰 DIY vs Shop Cost

Shop Cost: $350-$750 (parts + labor)

DIY Cost: $90-$250 (parts only)

You Save: $260-$500 by doing it yourself!

Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 1.5-2.5 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.