2026-06-10

Clean Radiator (Pressure Washer Kit) (Maintenance)

Correction code 18302000 FRT 1.08 NOTE: Unless otherwise explicitly stated in the procedure, the above correction code and FRT reflect all of the work required to perform this procedure, including the linked procedures. Do not stack correction codes unless explicitly told to do so. NOTE: See Flat Rate Times to learn more about FRTs and how they are created. NOTE: See Personal Protection to make sure wearing proper PPE when performing the below procedure. NOTE: See Ergonomic Precautions for safe and healthy working practices.

  • 2026-06-10: Released new procedure.
Warning IconA warning icon, calling your attention to a possibly risky situation
CAUTION
This procedure requires the availability of Pressure Washer Kit (2325255-00-A). If it is unavailable, clean the radiator with a blow gun. Refer to Clean Radiator.
Equipment:
  • 2325255-00-A - Pressure Washer Kit
  • 2303607-00-A - Waterproof plug of connector

Procedure

  1. Place the vehicle on the 2-post lift.
  2. Open the LH front door and lower the LH front window.
  3. Remove the HEPA filter assembly. See Assembly - Filter - HEPA (Remove and Replace).
  4. Remove the underhood storage unit. See Underhood Storage Unit (Remove and Replace).
  5. Disconnect the LV power. See 12V/LV Power (Disconnect and Connect).
  6. Release the connector lock, and then disconnect the active grille shutter electrical connector.
    Warning IconA warning icon, calling your attention to a possibly risky situation
    CAUTION
    Do not push down on the red tab. Pull the red tab to release the connector lock.
  7. Install the waterproof connector plugs (2303607-00-A) to the active grille shutter electrical connector, hood latch connector and LV battery connector.
    Informational PurposesAn informational icon, calling your attention
    Note
    Keep the harness and connectors away from the radiation to avoid water ingress.
  8. Remove the ambient temperature sensor cover from the active grille shutter, and then release the clip that attaches the cover to the active grille shutter.
  9. Remove the front valance. See Valance - Front Fascia (Remove and Replace).
  10. Remove the active grille shutter. See Active Grille Shutter (Remove and Replace).
  11. Release the clips (x8) that attach the stone guard to the radiator, and then remove the stone guard from the vehicle.
  12. Place a fluid catcher underneath the front of the vehicle.
  13. Use a vacuum to clean the dirt on the radiator.
    Informational PurposesAn informational icon, calling your attention
    Note
    If necessary, remove the large debris.
  14. Use the pressure washer kit (2325255-00-A) to clean the dirt on the radiator again.
    1. Add clear water to the pressure washer kit.
    2. Connect the pressure washer kit to the shop compressed air.
    3. Flush the upper face of radiator until all the visible dirt is cleaned.
      Informational PurposesAn informational icon, calling your attention
      Note
      Do not get too close to the radiator blades.
      Informational PurposesAn informational icon, calling your attention
      Note
      Sweep the nozzle up and down, and make sure that the washer nozzle is perpendicular to the radiator surface during the whole flushing process.
      Informational PurposesAn informational icon, calling your attention
      Note
      Dust and debris may fly out during the process; make sure to wear proper PPE for protection, such as a mask, safety glasses, etc.
  15. Release the upper and lower locking tabs that secure the radiator to the cooling and shroud assembly.
  16. Use an inflatable airbag to separate the radiator.
    Informational PurposesAn informational icon, calling your attention
    Note
    Use an inflatable airbag to raise the edge of the radiator at an angle. Be careful not to damage the surface of the radiator and the two holding mounts.
  17. Clean the bottom of the cooling fan.
  18. Inspect the bottom of the cooling fan for debris.
  19. Remove the inflatable airbag.
  20. Install the radiator into the cooling fan and shroud assembly.
  21. Install the locking tabs (x8) that attach the stone guard to the radiator.
  22. Remove the fluid catcher from underneath the front of the vehicle.
  23. Install the active grille shutter. See Active Grille Shutter (Remove and Replace).
  24. Install the front valance. See Valance - Front Fascia (Remove and Replace).
    Informational PurposesAn informational icon, calling your attention
    Note
    Terminate this step after the front aero shield panel is installed.
  25. Install the clip that attaches the cover to the active grille shutter, and then install the sensor cover to the active grille shutter.
  26. Remove the waterproof connector plugs (2303607-00-A) from the connectors (x3).
    Informational PurposesAn informational icon, calling your attention
    Note
    Before removing the plugs, make sure there are no water droplets on the exterior of the plugs and the connectors, to prevent water from entering the interior of the connector during plug removal.
  27. Engage the locking tab to connect the active grille shutter electrical connector.
  28. Connect LV power. See 12V/LV Power (Disconnect and Connect).
  29. Connect a laptop with Toolbox 3 to the vehicle. See Toolbox (Connect and Disconnect).
  30. In toolbox, click Actions tab, type Radiator in the search field, select PROC_VC_X_RESET-RADIATOR-UA-INDEXvia Toolbox:(link), click Run, and allow the routine to complete.
    Informational PurposesAn informational icon, calling your attention
    Note
    Only if the vehicle software is 2026.14.3 or later, this routine can be performed in the touchscreen.
  31. Disconnect the laptop.
  32. Perform the following routine using Service Mode or Toolbox (see 0005 - Service Modes): TEST-SELF_VCFRONT_X_THERMAL-PERFORMANCEvia Service Mode:Thermal ➜ Actions ➜ Test Thermal Performancevia Service Mode Plus:
    • Drive Inverter ➜ Front Drive Inverter Replacement ➜ Thermal System Test
    • Drive Inverter ➜ Rear Drive Inverter Replacement ➜ Thermal System Test
    • Drive Inverter ➜ Rear Left Drive Inverter Replacement ➜ Thermal System Test
    • Drive Inverter ➜ Rear Right Drive Inverter Replacement ➜ Thermal System Test
    • Drive Unit ➜ Front Drive Unit Replacement ➜ Thermal System Test
    • Drive Unit ➜ Rear Drive Unit Replacement ➜ Thermal System Test
    via Toolbox:(link)
  33. Disable Service Mode. See Service Mode.
  34. Install the underhood storage unit. See Underhood Storage Unit (Remove and Replace).
  35. Install the HEPA filter assembly. See Assembly - Filter - HEPA (Remove and Install).
  36. Raise the LH front window and close the LH front door.
  37. Remove the vehicle from the lift.