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2015 Subaru Outback
2015 Subaru Outback
2.5i Limited - Flat 4 2.5L

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How to Replace Rear Power Window Regulators 2015-2019 Subaru Outback

How to Replace Rear Power Window Regulators 2015-2019 Subaru Outback

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How to Replace a Rear Window Regulator on a 2015 Subaru Outback (Left or Right)

Step-by-step rear door panel removal, parts/tools list, safety tips, and torque specs for a smooth window repair

How to Replace a Rear Window Regulator on a 2015 Subaru Outback (Left or Right)

Step-by-step rear door panel removal, parts/tools list, safety tips, and torque specs for a smooth window repair

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Orion Logo White

🔧 Outback - Rear Window Regulator Replacement

The rear window regulator is the cable-and-track assembly that raises and lowers the glass. When it fails, the window may slip, bind, move crooked, or stop working. You’ll remove the rear door panel, secure the glass, swap the regulator, then reassemble and test.

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

Assumption: Bolt sizes/torques can vary slightly by supplier; use the torque notes below as best-practice and follow any markings on your parts.


⚠️ Safety & Precautions

  • ⚠️ Keep fingers clear of the scissor/cable mechanism while testing.
  • ⚠️ Support the window glass securely before unbolting it from the regulator.
  • ⚠️ Use eye protection when working inside the door shell.
  • ⚠️ If your door has a side airbag, do not probe yellow connectors; avoid turning the key on with airbag connectors unplugged.
  • 🔋 Recommended: Disconnect the negative battery cable before unplugging door harness connectors.

🔧 Required Tools

You'll need the following tools for this repair:

  • Safety glasses
  • Mechanic gloves
  • Trim removal tool set
  • Phillips #2 screwdriver
  • Small flat-blade screwdriver
  • 10mm socket
  • 1/4" drive ratchet
  • 6" socket extension
  • Torque wrench (in-lb or Nm)
  • Painter’s tape (1.5")
  • Pick tool
  • Magnetic parts tray
  • Flashlight

🔩 Required Parts

HowToo sells all the parts you need for this repair:

  • Rear window regulator assembly - Qty: 1 (Left or Right as needed)
  • Rear window regulator motor - Qty: 1 (only if your motor is bad)
  • Door panel retainer clips - Qty: 6-10 (as needed)
  • Butyl tape (vapor barrier adhesive) - Qty: 1
  • Silicone spray lubricant (plastic-safe) - Qty: 1 (optional)

📋 Before You Begin

  • 🅿️ Park on level ground, shift to Park, and set the parking brake.
  • 🔑 Lower the rear window to about halfway if it still moves (this gives better access).
  • 🔋 If disconnecting the battery: use a 10mm socket to remove the negative terminal and isolate it so it can’t spring back.
  • 🧰 Lay a towel on the door sill to protect paint and trim.

🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Remove the rear door switch panel

  • Use a trim removal tool set to gently pry up the window switch panel.
  • Unplug the switch connector(s) using a small flat-blade screwdriver to lift the lock tab if needed. (A lock tab is a tiny clip that prevents the plug from backing out.)

Step 2: Remove the rear door panel

  • Remove visible screws using a Phillips #2 screwdriver (commonly in the pull handle and behind small covers).
  • Pop off any screw covers using a small flat-blade screwdriver.
  • Use a trim removal tool set to release the panel clips around the edges.
  • Lift the door panel straight upward to unhook it from the window ledge.
  • Disconnect any remaining connectors (courtesy light, etc.) using the trim removal tool set or your fingers.

Step 3: Remove and preserve the vapor barrier

  • Peel back the plastic moisture barrier carefully by hand.
  • If the butyl adhesive is stubborn, use a pick tool to help separate it without tearing.
  • Stick the barrier back temporarily so it stays clean while you work.

Step 4: Secure the window glass

  • Raise the glass by hand to the fully-up position if it’s loose.
  • Use painter’s tape (1.5") to tape the glass to the door frame (run 2–3 long strips over the top of the glass and onto the outside of the door frame).
  • Tip: Use extra tape if glass feels heavy.

Step 5: Reconnect the switch temporarily (if needed) to position the clamps

  • If you need the regulator to move to access the glass clamp bolts, plug the window switch back in.
  • Turn ignition ON and move the window slightly until you can see the clamp bolts through the service holes.
  • Turn ignition OFF and unplug the switch again.

Step 6: Unbolt the glass from the regulator

  • Through the door access holes, loosen/remove the glass clamp bolts using a 10mm socket, 1/4" drive ratchet, and 6" socket extension.
  • Torque note (reinstall): Torque to 8 Nm (71 in-lbs).
  • Once the clamps are free, make sure the glass is still taped securely and not dropping.

Step 7: Disconnect the regulator motor connector

  • Unplug the window motor electrical connector by hand or using a small flat-blade screwdriver to release the lock tab.

Step 8: Remove the regulator assembly

  • Remove the regulator mounting bolts using a 10mm socket, 1/4" drive ratchet, and 6" socket extension.
  • Torque note (reinstall): Torque to 9 Nm (80 in-lbs).
  • Carefully angle the regulator out through the large access opening in the door.
  • Use a flashlight to watch the cables so they don’t snag.

Step 9: Swap the motor (only if your new regulator does not include it)

  • Remove the motor screws/bolts using a 10mm socket or Phillips #2 screwdriver (varies by regulator design).
  • Torque note (reinstall): Torque to 4 Nm (35 in-lbs).
  • Install the motor onto the new regulator in the same orientation.
  • Tip: Do not power the motor off the regulator.

Step 10: Install the new regulator

  • Feed the regulator into the door and align it with the mounting holes.
  • Start all bolts by hand first to avoid cross-threading.
  • Tighten using a 10mm socket and torque wrench.
  • Torque to 9 Nm (80 in-lbs).
  • Plug in the motor connector until it clicks.

Step 11: Attach the glass to the new regulator

  • Remove some painter’s tape (1.5") so the glass can lower carefully into the clamps.
  • Lower the glass by hand into the clamp position (or briefly plug in the switch and “bump” it down).
  • Install/tighten the clamp bolts using a 10mm socket and torque wrench.
  • Torque to 8 Nm (71 in-lbs).

Step 12: Quick function test before reassembly

  • Plug the switch back in.
  • Turn ignition ON and run the window all the way down, then all the way up.
  • Listen for popping/clicking and watch for crooked travel.
  • If it binds, loosen the regulator bolts slightly with a 10mm socket, align, then re-torque.

Step 13: Reinstall the vapor barrier

  • Press the plastic barrier back into the butyl adhesive by hand.
  • If it won’t stick well, apply butyl tape to reseal the perimeter.

Step 14: Reinstall the door panel

  • Reconnect all electrical connectors by hand.
  • Hook the top of the door panel onto the window ledge, then press the clips in around the edges.
  • Reinstall screws using a Phillips #2 screwdriver.
  • Snap the switch panel back in after plugging it in.

✅ After Repair

  • 🧪 Verify the window goes fully up/down smoothly several times.
  • 💧 Check that the vapor barrier is sealed (prevents water leaks into the cabin).
  • 🔊 Confirm the door lock, speaker, and courtesy light work.
  • 🧠 If the window has auto-up/down and acts odd: run it fully down, then fully up, holding the switch for 2 seconds at the top.

💰 DIY vs Shop Cost

Shop Cost: $450-$850 (parts + labor, per rear door)

DIY Cost: $90-$250 (parts only, per rear door)

You Save: $200-$700 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 per door.


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