Trunk/Liftgate Actuator

This procedure replaces the power liftgate actuator on a 2025 Rivian EDV 500, which controls the automatic opening and closing of the rear cargo door.

Warnings

Tools required

Parts

• Liftgate actuator assembly × 1 — Use OEM specification
• Trim panel clips (assorted) × 1 — Rivian trim clip kit
• Electrical connector seals × 2 — Use OEM specification

Preparation

1. Park the vehicle on a level surface and engage the parking brake
2. Ensure the liftgate is in the closed position before beginning work
3. Open the front hood and disconnect the 12V battery negative terminal, wait 5 minutes for system capacitors to discharge
4. Gather all tools and the replacement actuator assembly
5. Have a second person available to assist with liftgate support
6. Take photos of the existing actuator installation and electrical connections for reference
7. Mark the actuator mounting position with painter's tape if desired for alignment reference

Procedure

1. 1

   Access the liftgate interior trim panel
   Open the liftgate manually if needed. From inside the cargo area, locate and remove all visible fasteners securing the upper liftgate interior trim panel. These are typically Torx T20 or T25 screws located around the perimeter of the panel. Use the trim removal tool to carefully release the plastic retaining clips along the edges. Work slowly to avoid breaking clips. Set the trim panel aside in a safe location.
2. 2

   Remove the liftgate lower trim cover
   Locate the lower trim cover that conceals the latch mechanism area. Remove any visible fasteners (typically 2-3 Torx screws). Gently pull the cover away from the liftgate frame, releasing the retaining clips. This will expose the actuator assembly and its mounting hardware. Keep all fasteners organized for reinstallation.
3. 3

   Identify and photograph electrical connections
   Locate the actuator electrical connector(s). The EDV 500 typically has one main connector for the actuator motor and may have a secondary connector for position sensors. Take clear photos showing connector orientation, wire routing, and any securing clips. Note any grounding points or wire harness routing clips.
4. 4

   Disconnect the actuator electrical connections
   Press the locking tab on the main electrical connector and carefully pull it straight off the actuator. If present, disconnect the secondary position sensor connector using the same method. Inspect the connector pins for any corrosion or damage. If moisture is present, dry the area thoroughly before proceeding. Release any wire harness clips securing the wires to the liftgate frame.
5. 5

   Support the liftgate
   Have your assistant manually support the liftgate from the outside to prevent it from falling when the actuator is disconnected. The liftgate struts may not fully support the weight once the actuator is removed. Ensure your assistant has a firm grip and stable footing before proceeding.
6. 6

   Remove the actuator mounting fasteners
   Locate the actuator mounting bolts, typically 3-4 bolts securing the actuator assembly to the liftgate frame. These are commonly 10mm or 13mm hex head bolts. Using the appropriate socket and extension, remove all mounting bolts. Keep track of any washers or spacers. Note the bolt locations as they may be different lengths.
7. 7

   Disconnect the actuator from the latch mechanism
   Identify the actuator linkage connection to the latch mechanism. This is typically a clevis pin or plastic clip connection. Remove the retaining clip or push the release tab to disconnect the actuator arm from the latch. The actuator should now be free from the liftgate. Carefully remove the actuator assembly, threading it through the mounting area.
8. 8

   Prepare the new actuator
   Unpack the new actuator assembly and verify it matches the original unit. Check that all mounting brackets are in the correct position. Apply a small amount of dielectric grease to the electrical connector seals to prevent moisture intrusion. Position the actuator arm in the same orientation as the original unit was when removed.
9. 9

   Install the new actuator assembly
   With your assistant still supporting the liftgate, carefully position the new actuator into the mounting location. Thread it through the same path as removal. Connect the actuator arm to the latch mechanism linkage first, ensuring the clevis pin or clip is fully seated and secured. Align the actuator mounting holes with the liftgate frame.
10. 10

    Secure the actuator mounting bolts
    Install all actuator mounting bolts with any washers or spacers in their original positions. Hand-tighten all bolts first to ensure proper alignment. Then tighten the bolts in a cross-pattern to ensure even pressure distribution. Since no specific torque values are provided in the database, tighten firmly but do not over-torque. The bolts should be snug against the mounting surface without stripping the threads or deforming the actuator housing.
11. 11

    Reconnect electrical connections
    Route the wire harness along the original path, securing it with any clips that were removed. Connect the main actuator electrical connector, ensuring it clicks into place and the locking tab engages. If present, connect the secondary position sensor connector. Gently tug on each connector to verify it is fully seated. Reattach any ground connections.
12. 12

    Verify mechanical operation
    With your assistant still supporting the liftgate, gently test the latch mechanism by manually moving the actuator arm through its range of motion (if accessible). Ensure there is no binding or interference with surrounding components. The mechanism should move smoothly without excessive force. Your assistant can now release support of the liftgate.
13. 13

    Reinstall trim panels
    Reinstall the lower trim cover first, ensuring all clips are aligned and fasteners are tightened. Then reinstall the upper interior trim panel, pressing firmly around all edges to seat the retaining clips. Install all Torx screws and tighten securely. Verify all trim panels are flush and properly seated.
14. 14

    Reconnect the 12V battery and initialize system
    Return to the front of the vehicle and reconnect the 12V battery negative terminal. Tighten the terminal clamp securely. The vehicle systems will initialize, which may take 1-2 minutes. Do not attempt to operate the liftgate during this initialization period.
15. 15

    Calibrate and test the liftgate system
    Access the vehicle settings through the center display screen. Navigate to the liftgate calibration menu (typically under Settings > Vehicle > Liftgate). Follow the on-screen prompts to calibrate the new actuator. This typically involves a series of full open and close cycles. If calibration is not available through the display, perform 5-10 complete manual open/close cycles to allow the system to self-learn the actuator position limits.

Reassembly

1. Ensure all trim panels are fully seated with no gaps or misalignment
2. Verify all electrical connectors are fully engaged with locking tabs in place
3. Check that no tools or parts were left in the liftgate cavity
4. Confirm all mounting bolts are tight and no hardware is missing

Verification

• Test the power liftgate operation from the key fob, performing at least 3 full open and close cycles
• Test the power liftgate operation from the interior button, verifying smooth operation without unusual noises
• Test the power liftgate operation from the exterior button on the liftgate handle
• Verify the liftgate closes securely and latches properly, testing the handle to ensure it is locked
• Check for any warning lights or error messages on the instrument cluster related to the liftgate system
• Test the obstacle detection feature by placing a soft object in the liftgate path during closing - it should reverse direction
• Verify the programmable height adjustment feature (if equipped) still functions correctly
• Confirm the liftgate can be manually operated in case of power failure by pulling the interior emergency release
• Inspect all trim panels for secure fitment and proper appearance
• Test drive the vehicle briefly and verify no new warning messages appear

Related trouble codes on this vehicle

Codes that commonly send this job to the bay — tap one for symptoms, causes, and diagnostic steps.

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