Window Motor and Regulator - Rear

This procedure covers the removal and replacement of the rear window motor and regulator assembly on a 2025 Rivian EDV 500 electric delivery van.

Warnings

Tools required

Parts

• Rear window regulator and motor assembly × 1 — Use OEM specification
• Door panel clips (replacement set) × 1 — Use OEM specification
• Window regulator mounting fasteners × 1 — Use OEM specification

Preparation

1. Park vehicle on level surface and engage parking brake
2. Disconnect the 12V accessory battery negative terminal
3. Wait at least 2 minutes for capacitor discharge in body control modules
4. Lower the rear window to approximately mid-position for easiest access (if still operational)
5. Prepare a clean work area for removed panels and components

Procedure

1. 1

   Remove rear door trim panel
   Using trim panel removal tools, carefully pry out the door panel clips starting from the bottom edge. Work around the perimeter, releasing all clips. Remove any visible Torx screws (typically T20) securing the panel. Disconnect the door handle cable if equipped, and carefully lift the panel up and away from the door frame to disengage the top retention clips.
2. 2

   Disconnect electrical connectors
   Locate the window motor electrical connector behind the door panel. Press the release tab and disconnect the connector from the motor. If equipped with additional switches or lock actuators in the door, disconnect those as well and route them clear of the work area.
3. 3

   Remove or peel back vapor barrier
   Carefully peel back the plastic vapor barrier sheet to access the window regulator assembly. If sealed with adhesive, work slowly to avoid tearing. Use masking tape to secure the barrier out of the way. On EDV models, the barrier may be a reusable membrane with snap attachments.
4. 4

   Secure the window glass
   Raise the window glass to the full up position manually if possible. Use masking tape to secure the glass to the door frame, preventing it from dropping when the regulator is disconnected. Alternatively, have an assistant hold the glass in position throughout the removal process.
5. 5

   Disconnect window glass from regulator
   Locate the attachment points where the window glass connects to the regulator mechanism (typically two bolts accessible through access holes in the door frame). Remove the T30 Torx bolts or 10mm bolts securing the glass to the regulator lift channels. Carefully separate the glass from the regulator assembly.
6. 6

   Remove window regulator mounting fasteners
   Identify all regulator mounting points (typically 4-6 bolts or rivets). Remove the T30 Torx bolts or 10mm bolts securing the regulator assembly to the door frame. If factory rivets are present, drill them out carefully using the appropriate size bit. Keep track of all fasteners and their locations.
7. 7

   Remove regulator and motor assembly
   Carefully maneuver the window regulator and motor assembly out through the largest access opening in the door frame. The assembly may need to be tilted or rotated to clear internal door structures. Take note of the routing of cables and arms for proper reinstallation of the new assembly.
8. 8

   Install new regulator and motor assembly
   Position the new regulator assembly into the door frame, routing it through the access opening in the same orientation as the original. Align all mounting holes with the door frame mounting points. Ensure no wiring is pinched and that all regulator arms move freely within the door cavity.
9. 9

   Secure regulator mounting fasteners
   Install all regulator mounting bolts hand-tight first to ensure proper alignment. Once all fasteners are started, tighten them evenly in a cross pattern. If rivets were drilled out, use appropriate replacement bolts or install new rivets per manufacturer specifications. Verify the regulator sits flush against mounting surfaces.
10. 10

    Reconnect window glass to regulator
    Remove the tape securing the window glass. Carefully lower the glass into the door and align it with the regulator lift channels. Insert and tighten the glass mounting fasteners. Ensure the glass sits properly in both front and rear channels and moves smoothly without binding.
11. 11

    Reconnect electrical connector and test
    Connect the window motor electrical connector. Temporarily reconnect the 12V battery negative terminal. Test window operation through full up and down cycles to verify smooth operation and proper seating at both limits. Check for any unusual noises or binding. Disconnect battery again before proceeding.
12. 12

    Reinstall vapor barrier and trim panel
    Reposition the vapor barrier, ensuring all edges are properly sealed. If adhesive was disturbed, apply new weatherstrip adhesive as needed. Reconnect any remaining electrical connectors for switches. Align the door trim panel and press firmly to engage all clips. Reinstall any Torx screws removed earlier. Reconnect door handle cable if equipped.

Reassembly

1. Ensure all electrical connectors are fully seated with audible clicks
2. Verify vapor barrier is properly sealed to maintain moisture protection
3. Check that all door panel clips are fully engaged before testing
4. Replace any damaged or broken clips with new OEM replacements

Verification

• Reconnect the 12V accessory battery negative terminal
• Test window operation through multiple complete up and down cycles
• Verify window auto-up and auto-down functions operate correctly (if equipped)
• Check that window seals properly against weatherstripping when fully closed
• Confirm no rattling or abnormal noises during operation
• Verify door panel is secure with no loose clips or gaps
• Test all door switches and functions to ensure proper reconnection

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