2026-08-04

Powertrain Coolant (Drain and Refill)

Correction code 40202000 0.12 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.

  • 2026-08-04: Revised procedure to latest validations and added pictures for more clarity.
  • 2023-06-22: Improved steps for translation.
Equipment:
  • 1053600-00-C Drive Unit Pressure Test Fixture
  • 1132185-00-B Kit, Coolant Leak Test Adapters, Model 3
  • 1133843-00-A Kit, Coolant Drain & Fill Adapters, M3
  • 1135762-00-A Kit, Svc Plug, Cooling Hose, Model 3
  • 1065131-00-A Kit, Battery Coolant Drain and Fill

Drain

  1. Enable Service Mode. See Service Mode.
  2. Perform the following routine using Service Mode or Toolbox (see 0005 - Service Modes): PROC_VCFRONT_X_START-THERMAL-FILL-DRAINvia Service Mode:
    • Thermal ➜ Actions ➜ Start Thermal Fill/Drain
    • Thermal ➜ Coolant System ➜ Start Coolant Fill/Drain
    • Thermal ➜ Refrigerant System ➜ Start Refrigerant Fill/Drain
    via Service Mode Plus:
    • Drive Unit ➜ Front Drive Unit Replacement ➜ Start Coolant Fill/Drain
    • Drive Unit ➜ Rear Drive Unit Replacement ➜ Start Coolant Fill/Drain
    via Toolbox:(link)
  3. Disconnect 12V power. See 12V/LV Power (Disconnect and Connect).
  4. Remove the lower clips (x3) and bolt (x1) that attach the lower rear edge of the RH wheel arch liner to the body, to allow access to the coolant hose.
    Informational PurposesAn informational icon, calling your attention
    Note
    Put the RH front wheel liner away from the HV battery, using a bungee cord.
  5. Position a coolant drain container under the front RH corner of the HV battery.
  6. Disconnect the powertrain return hose at the RH side of the vehicle.
    Informational PurposesAn informational icon, calling your attention
    Note
    Plug the coolant connections.
  7. Attach the PT drain fitting adapter to the male PT return hose, and direct the tube to the coolant drain.
  8. Disconnect the rear powertrain supply hose at the RH side of the vehicle.
    Informational PurposesAn informational icon, calling your attention
    Note
    Plug the coolant connections.
  9. Connect the coolant pressure test adapter to the female fitting of the PT supply hose.
    Informational PurposesAn informational icon, calling your attention
    Note
    Perform a push-pull test to make sure that the adapter is fully seated.
  10. Connect the PT drain fitting adapter to the coolant pressure tester cart.
    Informational PurposesAn informational icon, calling your attention
    Note
    The regulator valve is pre-set to 20 psi. When the valve is set to the horizontal position, it is fully closed. Make sure that the valve is in the closed position.
  11. Connect a compressed air supply line to the coolant pressure tester.
  12. Open the valve on the PT drain fitting adapter.
    Informational PurposesAn informational icon, calling your attention
    Note
    When the valve knob is in the horizontal position, it is fully open.
  13. Slowly open P2 (outlet valve) on the pressure regulator, and allow the coolant to drain.
    Informational PurposesAn informational icon, calling your attention
    Note
    Open the valve very slowly. If it is opened too quickly, the pressure relief valve on the superbottle cap may open. Also the superbottle cap may make a humming noise. If so, the pressure is too high and should be lowered by adjusting the valve.
  14. Wait until the coolant is fully drained.
  15. Close the P2 (outlet valve) on the pressure regulator.
  16. Disconnect the air supply from the test fixture.
  17. Remove the coolant pressure test adapter and coolant drain adapter from the hoses.
  18. Perform the service procedures that required the powertrain coolant to be drained.
  19. After the components have been replaced, refill the coolant. See Refill.

Refill

  1. Remove the rubber plugs from the hoses.
  2. Connect the powertrain supply hose to the male fitting.
    Warning IconA warning icon, calling your attention to a possibly risky situation
    CAUTION
    Perform a push-pull test to verify that the hose is fully seated.
  3. Connect the powertrain return hose to the female fitting.
    Warning IconA warning icon, calling your attention to a possibly risky situation
    CAUTION
    Perform a push-pull test to verify that the hose is fully seated.
  4. Install the lower clips (x3) and bolt (x1) that attach the lower rear edge of the RH wheel arch liner to the body.
  5. Connect 12V power. See 12V/LV Power (Disconnect and Connect).
  6. Perform a vacuum refill of the cooling system. See Cooling System (Vacuum Refill).