Recirculation Door Actuator

This procedure involves removing and replacing the HVAC recirculation door actuator, which controls airflow between fresh and recirculated air modes in the cabin climate control system.

Warnings

Tools required

Parts

• HVAC recirculation door actuator × 1 — Use OEM Rivian specification
• Plastic panel clips (as needed) × 5 — Rivian OEM interior clips

Preparation

1. Park vehicle on level surface and engage parking brake
2. Ensure HVAC system is off and vehicle has been stationary for at least 30 minutes
3. Disconnect 12V battery negative terminal and wait 5 minutes for system capacitors to discharge
4. Set front seats to full rearward position for access
5. Gather all necessary tools and replacement parts

Procedure

1. 1

   Remove lower dashboard trim panel
   Starting on the passenger side, use trim removal tools to carefully pry out the lower dashboard trim panel. Begin at the outer edges and work inward, releasing all retaining clips. Disconnect any electrical connectors for lighting or USB ports before fully removing the panel. Set panel aside in a protected area.
2. 2

   Access glove box area
   Open the glove box and remove contents. Locate and remove the glove box damper by squeezing the sides and releasing from mounting points. Remove Torx screws securing glove box assembly (typically 4-6 screws). Disconnect glove box light connector if equipped. Remove glove box assembly completely to access HVAC housing behind.
3. 3

   Remove sound insulation and ductwork
   Remove any sound insulation material covering the HVAC housing by pulling tabs or removing fasteners. Disconnect air duct sections leading to the recirculation door area by releasing spring clips or rotating locking tabs. You may need to remove 2-3 duct sections to fully access the actuator mounting location.
4. 4

   Locate recirculation door actuator
   Using a flashlight, locate the recirculation door actuator on the HVAC housing. It is typically mounted on the side of the HVAC unit nearest the passenger side firewall, with a 3-wire or 4-wire connector. The actuator will be a small plastic module approximately 3 inches square with a gear-driven shaft.
5. 5

   Disconnect actuator electrical connector
   Locate the wiring harness connector on the actuator. Press the locking tab and carefully pull the connector straight off the actuator. Do not pull on the wires themselves. If access is limited, use needle nose pliers to press the locking tab while gently wiggling the connector free.
6. 6

   Remove actuator mounting fasteners
   Remove the mounting screws securing the actuator to the HVAC housing (typically 2-3 Torx screws, usually T20 or T25). Keep track of any spacers or alignment washers. Note the orientation of the actuator and position of the drive shaft before removal.
7. 7

   Remove old actuator
   Carefully pull the actuator away from the HVAC housing, disengaging the drive shaft from the recirculation door linkage. Rotate slightly if needed to clear the shaft from the door mechanism. Inspect the door linkage for any damage or binding - the door should move freely by hand once the actuator is removed.
8. 8

   Prepare new actuator
   Remove new actuator from packaging. If possible, manually rotate the new actuator gear to approximately match the position of the door linkage for easier installation. Do not force the gear mechanism - it should rotate smoothly with moderate pressure.
9. 9

   Install new actuator
   Align the new actuator drive shaft with the recirculation door linkage. Carefully engage the shaft into the door mechanism while positioning the actuator body against the mounting surface. Ensure proper engagement by gently rotating the actuator shaft - it should move the door smoothly without binding.
10. 10

    Secure actuator mounting
    Install the mounting screws and tighten in a cross pattern to ensure even seating. Tighten screws snugly but do not overtighten as the housing is plastic. Verify the actuator is firmly seated and does not rock or move when touched.
11. 11

    Reconnect electrical connector
    Push the wiring harness connector onto the new actuator until the locking tab clicks into place. Gently tug on the connector to verify it is fully seated and locked. Ensure wiring is routed away from any moving parts or sharp edges.
12. 12

    Reinstall ductwork and insulation
    Reinstall all air duct sections in reverse order of removal, ensuring all spring clips or locking tabs are fully engaged. Replace sound insulation material and secure all fasteners or tabs.
13. 13

    Reinstall glove box assembly
    Reconnect glove box light connector if equipped. Position glove box assembly and install all Torx mounting screws. Reinstall glove box damper by snapping into mounting points. Verify glove box operates smoothly and latches properly.
14. 14

    Reinstall lower dashboard trim
    Reconnect any electrical connectors for lighting or USB ports. Align lower dashboard trim panel and press firmly at all clip locations until each clip snaps into place. Verify all edges are flush and secure.
15. 15

    Reconnect battery and initialize system
    Reconnect 12V battery negative terminal. Start vehicle and allow HVAC system to initialize. The actuator will self-calibrate during first operation cycle, which may take 30-60 seconds and produce clicking or whirring sounds.

Reassembly

1. Ensure all electrical connectors are fully seated with locking tabs engaged
2. Verify all trim panels are flush and clips are properly secured
3. Replace any damaged plastic clips with new OEM parts
4. Check that glove box operates smoothly and all dashboard trim pieces are aligned

Verification

• Start vehicle and turn on HVAC system in AUTO mode
• Use climate control interface to switch between fresh air and recirculation modes multiple times
• Listen for smooth actuator operation without grinding, clicking, or binding noises
• Verify air quality indicator or recirculation icon on display responds correctly to mode changes
• Test system in both heating and cooling modes to confirm proper airflow in all settings
• Check for any air leaks around dashboard areas that could indicate improper reassembly
• If equipped with air quality sensor, verify automatic recirculation function operates correctly

Related trouble codes on this vehicle

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