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Replacement [03/2019 - ]: Procedure

  1. REMOVE FRONT SUSPENSION MEMBER LOWER PROTECTOR 

    Refer to REMOVAL [03/2019 - ]

  2. DRAIN ENGINE COOLANT 
    WARNING:
    • Hot fluids.

      Risk of scalding!

      • Conduct all work in the vehicle wearing appropriate personal protective equipment only.
    NOTE:
    • Life-long fill of coolant!
    • Do not reuse used coolant.

      When replacing and removing components which rely on the corrosion protection effect of the coolant, it is essential to change the coolant. The cooling system must therefore be emptied and refilled.

      In the case of other removal work involving the draining of part quantities of coolant, the coolant level must be topped up with new coolant.

    • Collect and dispose of emerging fluids. Observe country-specific waste disposal regulations.
    1. Check that the START-STOP button (engine switch) off.

      HINT: 

      Pressing and holding the AUDIO button changes the power source mode to IG OFF.

      GTY945804Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Loosen reserve tank cap sub-assembly (1).
      GTY946160Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Unlock and disconnect the No. 1 radiator hose (1).
      GTY945957Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Catch and dispose of escaping coolant.
    5. Check the sealing ring (1) of the No. 1 radiator hose (2) for damage and renew it with the SST, if necessary.
      GTY946255Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    6. Connect and lock the No. 1 radiator hose.

      HINT: 

      Make sure that the connections are locked correctly. The locks must engage audibly.

  3. ADD ENGINE COOLANT 
    NOTE:
    • Life-long fill of coolant!
    • Do not reuse used coolant.

      When replacing and removing components which rely on the corrosion protection effect of the coolant, it is essential to change the coolant. The cooling system must therefore be emptied and refilled.

      In the case of other removal work involving the draining of part quantities of coolant, the coolant level must be topped up with new coolant.

    • Mixing different coolants is not permitted.

      Non-compliance will result in danger of component damage and/or engine damage.

    • Filling specification absolutely must be adhered to.

      The operation of the vehicle is not permitted unless the filling procedure has been completed. Otherwise, functional limitations (degradation) and/or overheating may occur.

      A bleeding procedure is required after a part has been exchanged in the cooling system and/or after refilling the cooling system.

    HINT: 

    • Before starting the automatic cooling system bleeding routine, make sure that all coolant circuits are filled. If the cooling system bleeding routine is started while one of the coolant circuits is empty, there is a risk of damage to the electric coolant pump when running it dry.
    • Make sure that negative (-) battery terminal is not disconnected for the bleeding procedure. Switch on low-beam headlights and hazard warning lights. If the low-beam headlights and hazard warning lights are not switched on, the engine switch off automatically after a certain period of time and interrupt the bleeding procedure.
    1. Add engine coolant to the level shown in the illustration.
      GTY946198Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Capacity

      10.5 liters (11.1 US qts, 9.2 Imp. qts)

      1. Expendable materials : Antifreeze and Corrosion Inhibitor Frostox HT-12

        HINT: 

        When using Antifreeze and Corrosion Inhibitor Frostox HT-12, dilute the Antifreeze and Corrosion Inhibitor Frostox HT-12 to 50% before using it.

    2. Open the bleeder screw on the radiator reserve tank assembly for the high-temperature coolant circuit and close it again after approx. 10 s.
      1. You can close the bleeder screw prior to expiry of the 10 s once coolant escapes.
    3. Close the reserve tank cap sub-assembly on the radiator reserve tank assembly of the high-temperature cooling circuit.
    4. Make sure the bonnet is closed.[*1]
    5. Make sure that the wheels touch the ground.[*2]
    6. Engage the parking brake.[*3]
    7. Engage into both "P" or "N" automatic transmissions.[*4]
    8. Press the START-STOP button (engine switch) 3 times within 0.8 seconds to enter Diagnostic (PAD) Mode.[*5]
    9. Turn on low-beam headlight and the hazard warning light.[*6]

      HINT: 

      If the low-beam headlights and hazard warning lights are not switched on, the engine switch off automatically after a certain period of time and interrupt the bleeding procedure.

    10. Adjust the heating to maximum temperature and adjust the blower to the lowest stage.[*7]
    11. Hold the accelerator pedal down for at least 10 s at limit position and do not step onto the brake pedal.[*8]
    12. Start engine.[*9]
    13. The cooling system bleeding routine has been started, pay attention to the display on the instrument cluster (KOMBI). ("Service function started")[*10]

      HINT: 

      • The engine speed (up to 3500 rpm) and the actuators in the cooling system are activated automatically for 11 minutes according to a cooling system bleeding routine.
      • The cooling system bleeding routine ends approx. 11 min after the engine starts.
      • The engine speed drops to the idle speed.
      • Observe the display in the instrument cluster (KOMBI).
      • If the service function is interrupted, the cooling system bleeding routine must be repeated.
    14. Switch off engine.[*11]
    15. Allow the coolant temperature to cool down to < 50°C.[*12]
    16. Connect the diagnosis system to the vehicle and enter the following menus:

      Vehicle information / Control unit list / DME / Call up control unit functions / Diagnostic request / Diagnostic request / 102 Coolant temperature

    17. Loosen reserve tank cap sub-assembly.[*13]
    18. Check that the engine coolant level is maximum mark.[*14]
    19. If the engine coolant level is below the maximum mark, repeat steps [*1] through [*14] until the water level in the radiator reserve tank assembly stops decreasing.
    20. Adjust the filling level in the radiator reserve tank assembly of the high-temperature coolant circuit to 200 ml over the maximum mark.
      NOTE:
      • After the cooling system bleeding routine, the cooling system is topped up above the maximum mark.
      • Overfilling the cooling system serves to balance the remaining air in the cooling system.
      • The normal filling level of the coolant is reached while driving.
    21. Close reserve tank cap sub-assembly.
    22. Close the reserve tank cap sub-assembly until the arrows are flush.
    23. Disconnect battery charger.
  4. INSPECT FOR COOLANT LEAK 

    Refer to PROCEDURE - Step 1

  5. INSTALL FRONT SUSPENSION MEMBER LOWER PROTECTOR 

    Refer to INSTALLATION [03/2019 - ]

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