Door Lock Actuator - Rear

This procedure covers the removal and replacement of the rear door lock actuator on a 2014-2019 Toyota Corolla with the 1.8L I4 engine.

Warnings

Tools required

Parts

• Rear door lock actuator × 1 — Use OEM specification
• Door panel retaining clips × 5 — Toyota 90467-10188 or equivalent

Preparation

1. Park vehicle on level ground and engage parking brake
2. Ensure the rear door window is fully raised
3. Gather all tools and the replacement actuator
4. Disconnect negative battery terminal to prevent accidental power lock activation during repair
5. Allow 15 minutes after battery disconnect for electrical system to fully discharge

Procedure

1. 1

   Remove door panel screw covers and screws
   Use a flat head screwdriver or trim tool to carefully pry off the screw covers located in the door pull handle area and near the door latch. Remove the Phillips screws behind these covers. There are typically 2-3 screws securing the panel.
2. 2

   Disconnect door handle cable
   Locate the manual door release cable connected to the interior door handle assembly. Carefully unhook the cable from the handle mechanism by sliding it forward and lifting out of the slot. Note the routing for reinstallation.
3. 3

   Remove door panel retaining clips
   Starting at the bottom rear corner, use a trim removal tool to carefully pry the door panel away from the door frame. Work your way around the perimeter, releasing each plastic retaining clip. Pull gently but firmly outward and upward to avoid breaking clips. There are approximately 8-10 clips around the panel perimeter.
   ⚠Clips break easily when cold. Apply gentle, steady pressure rather than quick jerks.
4. 4

   Disconnect electrical connectors
   With the panel loose, locate the electrical connector for the power window switch and any other connectors (power lock switch if equipped). Press the release tab and disconnect each connector. Carefully lift the door panel away and set aside on a clean surface.
5. 5

   Remove vapor barrier access area
   Carefully peel back enough of the plastic vapor barrier to access the door lock actuator area, typically near the door latch assembly at the rear edge of the door. Do not fully remove the barrier unless necessary. Use a plastic bag or tape to protect the peeled section for reinstallation.
6. 6

   Disconnect actuator electrical connector
   Locate the door lock actuator mounted to the door latch assembly. Press the release tab on the electrical connector and disconnect it from the actuator. The connector may have a locking slider that must be moved before the tab will release.
7. 7

   Disconnect lock rod linkages
   Identify the lock rods connected to the actuator. These are typically white or black plastic rods with ball-and-socket style connections. Use a small pick or hook tool to carefully pry the rod ends from the actuator connection points. Note the position and routing of each rod for proper reassembly.
   ⚠Lock rods can spring out of position if not controlled. Keep fingers clear of pinch points.
8. 8

   Remove actuator mounting fasteners
   Remove the mounting bolts securing the actuator to the door latch assembly using a 10mm socket. There are typically 2-3 bolts. Support the actuator as you remove the final bolt to prevent it from falling into the door cavity.
   ℹ️Keep track of bolt locations as they may be different lengths depending on position.
   Torque spec

   Module Mounting Bolts8 Nm (6 lb-ft)
9. 9

   Remove old actuator
   Carefully maneuver the old actuator out through the access opening in the door frame. It may require tilting and rotating to clear internal door structures. Once removed, compare with the new actuator to verify correct replacement part.
10. 10

    Install new actuator
    Position the new actuator into the door, aligning it with the mounting holes on the door latch assembly. Install the mounting bolts hand-tight first to ensure proper alignment, then torque to specification. Verify the actuator is seated flush against the mounting surface.
    Torque spec

    Module Mounting Bolts8 Nm (6 lb-ft)
11. 11

    Reconnect lock rod linkages
    Reconnect each lock rod to the new actuator in the same positions noted during removal. Push firmly until each rod ball snaps into its socket with an audible click. Gently tug each rod to verify secure connection.
12. 12

    Reconnect actuator electrical connector
    Plug the electrical connector into the new actuator until it clicks into place. If equipped with a locking slider, ensure it is fully engaged. Give the connector a gentle pull to verify it is securely locked.
13. 13

    Reinstall vapor barrier
    Press the vapor barrier back into place, ensuring complete adhesion around the edges. If the adhesive is compromised, use appropriate automotive tape to seal completely. Proper sealing prevents moisture intrusion and wind noise.
14. 14

    Reinstall door panel
    Reconnect all electrical connectors for the power window and lock switches. Position the door panel, hooking the top edge under the window channel first, then press firmly around the perimeter to engage all retaining clips. Install the Phillips screws and screw covers. Reconnect the door handle cable.
15. 15

    Reconnect battery and test
    Reconnect the negative battery terminal and torque to specification. Test the door lock function using both the interior switch and the key fob. Verify the lock cycles properly in both directions and that the interior door handle operates correctly.
    Torque spec

    Battery Terminal Bolts6 Nm (4 lb-ft)

Reassembly

1. Ensure all door panel clips are fully seated before testing door operation
2. Verify door handle cable is properly routed and operates smoothly
3. Check that vapor barrier is completely sealed to prevent water intrusion
4. Confirm all electrical connections are secure and locked in place

Verification

• Test door lock operation from both driver controls and key fob multiple times
• Verify all lock positions engage and disengage properly
• Check that interior door handle releases latch correctly in both locked and unlocked positions
• Listen for any unusual noises during lock operation
• Ensure door panel is secure with no rattles or loose sections
• Verify power windows and other door functions operate normally

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