🔧 CX-5 - Rear Window Regulator Replacement

The rear window regulator is the lift mechanism inside the rear door that moves the glass up and down. Replacement usually means removing the rear door panel, securing the glass, swapping the regulator (and sometimes the motor), then testing operation before reinstalling the panel.

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

Quick questions (so I match the exact setup): Which rear door are you doing (left, right, or both)? And is the regulator held in with bolts or pop rivets (if you haven’t opened it yet, tell me and I’ll keep both paths)?

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⚠️ Safety & Precautions

• ⚠️ Disconnect the negative battery cable before unplugging door wiring to reduce airbag/short-circuit risk.
• ⚠️ Support the window glass securely with tape before removing the regulator.
• ⚠️ Keep fingers clear of the scissor/cable mechanism; it can pinch hard.
• ⚠️ Don’t tear the vapor barrier (plastic sheet); it prevents water leaks into the cabin.

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🔧 Required Tools

You'll need the following tools for this repair:

• Safety glasses
• Mechanic gloves
• Plastic trim removal tool set
• Phillips #2 screwdriver
• Small flat-blade screwdriver
• 10mm socket
• 1/4" drive ratchet
• 6" socket extension
• Needle-nose pliers
• Painter’s tape (2" wide)
• Pick tool
• Torque wrench (in-lb or small Nm range)
• Drill
• 1/4" drill bit
• Pop rivet gun (specialty)
• 1/4" pop rivets (specialty)
• Work light

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🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Rear window regulator (correct side) - Qty: 1
• Rear window regulator motor (if not included) - Qty: 1
• Rear door panel trim clips - Qty: 6-12
• Butyl tape (vapor barrier adhesive) - Qty: 1
• 1/4" pop rivets (if equipped with riveted regulator) - Qty: 6-10

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📋 Before You Begin

• Park on level ground, key off, and open the rear door fully.
• Reconnect power temporarily only to position the glass if needed, then shut key off.
• Set the window glass to a “service position” where the glass clamp bolts are visible through the access holes.
• Disconnect the negative battery cable using a 10mm socket and wait 3 minutes before unplugging door connectors.

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Remove the rear door panel

• Use a plastic trim removal tool set to gently pry off the small trim covers near the interior handle/armrest (if equipped).
• Remove exposed screws using a Phillips #2 screwdriver.
• Use a plastic trim removal tool set to pop the door panel clips free around the edges.
• Lift the panel upward to unhook it from the window ledge.
• Unplug electrical connectors using a small flat-blade screwdriver to release any locking tabs. Don’t yank on wires.

Step 2: Peel back the vapor barrier

• Use a pick tool and your hands to peel the vapor barrier back slowly.
• If the adhesive is messy, plan to reseal it later with butyl tape.

Step 3: Secure the window glass

• If the glass is not already in position, temporarily reconnect the window switch, reconnect the battery, turn key ON, and move the glass until the clamp fasteners are accessible through the door openings.
• Turn key OFF and disconnect the battery again using a 10mm socket.
• Apply painter’s tape (2" wide) from the outside of the glass over the door frame to hold the glass up once it’s loosened (use multiple strips).

Step 4: Detach the glass from the regulator

• Through the access holes, loosen/remove the glass clamp fasteners using a 10mm socket and 1/4" drive ratchet.
• Carefully slide the glass fully up by hand and secure it with extra painter’s tape (2" wide).
• Torque to 8-10 Nm (71-89 in-lbs) when re-tightening the glass clamp fasteners later.

Step 5: Remove the regulator/motor assembly

• Unplug the regulator motor connector (if separate) using a small flat-blade screwdriver to release the lock.
• Bolt-in style: Remove regulator and motor bolts using a 10mm socket, 1/4" drive ratchet, and 6" socket extension.
• Rivet-in style: Drill out the rivets using a drill with a 1/4" drill bit. Catch rivet heads so they don’t rattle.
• Work the regulator out through the largest door opening.

Step 6: Transfer the motor (if your new regulator doesn’t include it)

• Remove the motor screws/bolts using the same socket/screwdriver that fits yours (commonly a 10mm socket or Phillips #2 screwdriver).
• Install the motor onto the new regulator.
• Torque to 4-6 Nm (35-53 in-lbs) for small motor fasteners.

Step 7: Install the new regulator

• Place the new regulator into the door cavity and align it with the mounting holes.
• Bolt-in style: Install bolts using a 10mm socket and 1/4" drive ratchet, then Torque to 8-10 Nm (71-89 in-lbs).
• Rivet-in style: Install new rivets using a pop rivet gun (specialty) and 1/4" pop rivets (specialty).
• Reconnect the motor electrical connector.

Step 8: Reattach the glass to the regulator

• Lower the glass carefully into the clamps (remove some tape as needed) and align it evenly.
• Tighten the clamp fasteners using a 10mm socket.
• Torque to 8-10 Nm (71-89 in-lbs). Even pressure prevents glass tilt.

Step 9: Function test before reassembly

• Reconnect the battery negative cable using a 10mm socket.
• Plug in the window switch and run the window up/down several times while watching for binding or tilt.
• Disconnect the battery again using a 10mm socket before buttoning up the wiring and panel.

Step 10: Reseal the vapor barrier and reinstall the door panel

• Reseal the vapor barrier with butyl tape (press firmly all around).
• Reconnect all door electrical connectors.
• Hook the door panel on the top edge first, then press clips in around the perimeter.
• Reinstall screws using a Phillips #2 screwdriver and snap trim covers back on.

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✅ After Repair

• Reconnect the battery and confirm the window moves smoothly and seals at the top evenly.
• Check that the door handle, lock, and speaker work before fully closing up.
• If the window has one-touch behavior and acts strange, cycle it fully down and fully up once to relearn the end stops.
• Listen for rattles (a missed rivet head inside the door is common).

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💰 DIY vs Shop Cost

Shop Cost: ₹6,000-₹14,000 (parts + labor, per door)

DIY Cost: ₹2,500-₹8,500 (parts only, per door)

You Save: ₹3,500-₹5,500+ by doing it yourself!

Shop labor rates vary but typically run ₹800-₹1,500/hour. This repair takes a shop approximately 1.5-3.0 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.