Recirculation Door Actuator

This procedure covers the removal and replacement of the HVAC recirculation door actuator in a 2023 Rivian EDV 500, which controls fresh air versus recirculated cabin air modes.

Warnings

Tools required

Parts

• HVAC recirculation door actuator × 1 — Use OEM Rivian specification
• Panel clip assortment × 1 — Various sizes for trim panels

Preparation

1. Park vehicle on level surface and engage parking brake
2. Disconnect the 12V battery negative terminal and wait 5 minutes for capacitor discharge
3. Set HVAC system to OFF position before disconnecting battery
4. Prepare a clean workspace and organize fasteners by location
5. Review service manual diagrams for actuator location behind glove box area

Procedure

1. 1

   Remove lower passenger trim panel
   Open passenger door. Using trim panel tools, carefully pry out the lower kick panel on the passenger side. Start at the rear edge and work forward. Remove any T20 Torx screws securing the panel. Disconnect any courtesy light connectors if present. Set panel aside in a safe location.
2. 2

   Remove glove box assembly
   Open the glove box fully. Locate and remove the glove box damper by squeezing the sides to release it from the mounting points. Remove all T25 Torx screws securing the glove box to the dashboard (typically 6-8 screws). Gently pull the glove box forward and disconnect any electrical connectors for glove box lighting. Remove the glove box assembly completely.
3. 3

   Remove lower dash insulation panel
   Behind the glove box opening, locate the lower HVAC insulation panel. This is typically a foam-backed plastic panel. Remove any 7mm bolts or push clips securing this panel. Carefully pull the insulation panel down and out of the dash cavity. This will expose the HVAC housing and actuators.
4. 4

   Locate recirculation door actuator
   Using a flashlight, identify the recirculation door actuator on the HVAC housing. It is typically located on the right side of the HVAC case, near the fresh air inlet area. The actuator will have an electrical connector and be secured with 7mm bolts or T20 Torx screws. Verify identification by tracing the electrical harness back to the connector.
5. 5

   Disconnect actuator electrical connector
   Locate the electrical connector on the recirculation door actuator. Press the locking tab (may be red or gray) and carefully pull the connector straight off the actuator. If access is tight, use needle nose pliers to press the lock tab. Do not pull on the wires themselves.
6. 6

   Remove actuator mounting fasteners
   Remove the actuator mounting fasteners, typically 2-3 7mm bolts or T20 Torx screws. Support the actuator with one hand while removing the final fastener to prevent it from falling into the HVAC housing. Keep all fasteners organized for reassembly.
7. 7

   Remove old actuator
   Carefully rotate the actuator counterclockwise to disengage it from the door linkage shaft. Pull the actuator straight out from the HVAC housing. Note the orientation of the actuator drive gear and the position of the door shaft for proper installation of the new unit.
8. 8

   Inspect door mechanism
   With the actuator removed, inspect the recirculation door shaft and linkage for damage, binding, or debris. Manually rotate the door shaft through its full range of motion to ensure it moves freely. Clean any debris from the mounting area on the HVAC housing.
9. 9

   Install new actuator
   Position the new recirculation door actuator with the drive gear aligned to the door shaft. The actuator should be oriented in the same position as the old unit. Gently push the actuator onto the shaft while rotating slightly to engage the gear teeth. Ensure full engagement before securing.
10. 10

    Secure new actuator
    Install the actuator mounting fasteners (7mm bolts or T20 Torx screws) and tighten evenly in a cross pattern. Do not overtighten as the HVAC housing is plastic. Verify the actuator is firmly seated against the housing with no gaps.
11. 11

    Reconnect electrical connector
    Reconnect the electrical connector to the new actuator, ensuring it clicks fully into place. Verify the locking tab engages properly. Gently tug on the connector to confirm secure attachment.
12. 12

    Reinstall lower dash insulation panel
    Position the HVAC insulation panel back into place behind the glove box opening. Secure with the original 7mm bolts or push clips. Ensure all edges are properly seated and the panel does not interfere with any actuator movement.
13. 13

    Reinstall glove box assembly
    Reconnect the glove box lighting connector if equipped. Position the glove box into the dashboard opening and align mounting holes. Install all T25 Torx screws and tighten securely. Reinstall the glove box damper by snapping it into the mounting points on both sides. Test glove box operation.
14. 14

    Reinstall lower passenger trim panel
    Reconnect any courtesy light connectors. Position the lower kick panel and align all clips. Press firmly along all edges to seat the clips. Install any T20 Torx screws. Verify panel is flush and secure.
15. 15

    Reconnect battery and calibrate system
    Reconnect the 12V battery negative terminal. Turn the ignition to ON position (do not start vehicle if in service mode). Access the HVAC settings and run the actuator calibration procedure through the vehicle's service menu or allow the system to auto-calibrate by cycling through all HVAC modes (fresh air, recirculation, defrost). Listen for smooth actuator operation without binding or clicking.

Reassembly

1. Ensure all trim panels are properly seated with no gaps or misalignment
2. Verify all electrical connectors are fully engaged with locking tabs secured
3. Test glove box operation and damper function before final verification
4. Check that no tools or parts were left in the dash cavity

Verification

• Start the vehicle and turn on the HVAC system
• Cycle through fresh air and recirculation modes using the touchscreen controls
• Listen for smooth, quiet actuator operation during mode changes
• Verify the recirculation indicator light on the display responds correctly to mode selection
• Test in both manual and automatic climate control modes
• Check for proper airflow in all modes with no unusual noises or binding
• Perform a test drive and verify HVAC functions operate correctly under various conditions

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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