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Coolant Refilling And Air Bleeding

WARNING:
  • When working on the high voltage system, the work should be performed by technicians who have completed the relevant training. A lack of understanding of the high voltage system can lead to serious accidents due to electric shock or short circuit.
  • When working on the high voltage system or related components, be sure to observe and be aware of the HIGH VOLTAGE SYSTEM GENERAL SAFETY INFORMATION AND CAUTION . If not, it may cause serious accidents due to electric shock or short circuit.
  • When working on high voltage system, make sure to check the Personal Protective Equipment (PPE) and HIGH VOLTAGE SHUT-OFF PROCEDURES .
NOTE:
  • Use a fender cover to protect the painted surface.
  • Be careful not to damage the connector when disconnecting.
  • Follow the instructions below when releasing the quick connector.
    • Remove the while pressing the quick connector clamp (A) in the direction of the arrow.
    • Do not touch the rubber seal (B) inside the hose.
    G15815609Courtesy of KIA MOTORS AMERICA, INC.
  • Check the color of the coolant in the pressure cap label and reservoir tank when replacing or replacing the coolant.
G00662424Courtesy of KIA MOTORS AMERICA, INC.
  1. Disconnect the battery negative (-) terminal and the service interlock connector.

    (Refer to Battery Control System - " AUXILIARY 12 V BATTERY 2WD  " ) 

    (Refer to Battery Control System - " AUXILIARY 12 V BATTERY 4WD  ") 

  2. Open the reservoir tank pressure cap (A).
    G15815610Courtesy of KIA MOTORS AMERICA, INC.
  3. Install the radiator cap adapter (A).
    G15815611Courtesy of KIA MOTORS AMERICA, INC.
  4. Connect the radiator cap connection hose (A) to the radiator cap adapter (B).
    G15815612Courtesy of KIA MOTORS AMERICA, INC.
  5. Connect the radiator cap connection hose (A) to the air pressurization valve of the SST (0K253 - J2300).
    G15815613Courtesy of KIA MOTORS AMERICA, INC.
  6. Install the air hose (A) to the air inlet valve of the SST (0K253 - J2300).
    G15815614Courtesy of KIA MOTORS AMERICA, INC.
  7. Turn the regulator adjusting knob (A) to set pressure gauge (B) to 0.2 Mpa.
    G15815615Courtesy of KIA MOTORS AMERICA, INC.
  8. Remove the rear under cover.

    (Refer to Motor and Reduction Gear System - " REAR UNDER COVER  ") 

  9. Disconnect the water pump hose (A) after releasing the quick connector.
    G15815616Courtesy of KIA MOTORS AMERICA, INC.
  10. Install the coolant drain adapter and hose (A) to the water hose.
    G15815617Courtesy of KIA MOTORS AMERICA, INC.
  11. Put the opposite of the coolant drain adapter and hose (A) to a bucket (B).
    G15815618Courtesy of KIA MOTORS AMERICA, INC.
  12. Turn the pressurization valve (A) of the SST (0K253 - J2300) in the direction of the arrow to drain coolant.
    G15815619Courtesy of KIA MOTORS AMERICA, INC.
    NOTE: Make sure that the valves other than the pressurized valve (A) are closed.
  13. Close the pressurization valve after drain coolant, and then install the water hose (A).
    G15815620Courtesy of KIA MOTORS AMERICA, INC.
  14. Drain coolant and inside the reservoir tank, and then clean it.
  15. Disconnect the radiator cap connection hose (A) to the pressurization valve on the SST (0K253 - J2300).
    G15815621Courtesy of KIA MOTORS AMERICA, INC.
  16. Connect the radiator cap connection hose (A) to the vacuum valve of the SST (0K253 - J2300).
    G15815622Courtesy of KIA MOTORS AMERICA, INC.
  17. Open the vacuum valve (A) of the SST (0K253 - J2300) in the direction of the arrow, and then close when the vacuum gauge (B) reaches the green area (C).
    G15815623Courtesy of KIA MOTORS AMERICA, INC.
    NOTE: Make sure that the valves other than the pressurized valve (A) are closed.
  18. Connect the coolant suction hose (A) to the SST (0K253 - J2300) coolant filler valve and place the opposite hose in the bucket (B) containing new coolant.
    G15815624Courtesy of KIA MOTORS AMERICA, INC.
  19. Turn the suction valve (A) in the direction of the arrow to fill new coolant, and then close it when the vacuum gauge reaches to '0'.
    Battery Type Coolant Specification
    160 kW (2WD) 70 kW+160 kW (4WD)
    Standard (l  ) Normal Coolant (Pink color) 6.7 6.9
    Long range (l  ) 6.7 6.9
    NOTE:
    • Use only genuine antifreeze.
    • Do not mix antifreeze/coolant from different brands.
    • Do not add any anti-rust additives.
    • Use only distilled water when mixing antifreeze with water.
    • If the concentration of coolant is less than 50%, corrosion or freezing may occur, and if the concentration of coolant is more than 60%, the cooling effect may be reduced, so the concentration of coolant shall be maintained at 50 to 55%.
    G15815625Courtesy of KIA MOTORS AMERICA, INC.
    NOTE: Check that the valve except the suction valve (A) is locked.
  20. Remove the radiator cap adapter (A).
    G15815626Courtesy of KIA MOTORS AMERICA, INC.
  21. Connect the KDS and perform the "Electric Water Pump Control" on the S/W management menu.
    NOTE: Visually check the tank for good coolant circulation during EWP operation after air bleeding.

    Information 

    Charge the auxiliary 12 V battery during performing "Electric Water Pump Control" to prevent battery drain.

    G15815627Courtesy of KIA MOTORS AMERICA, INC.
    G15815628Courtesy of KIA MOTORS AMERICA, INC.
    G15815629Courtesy of KIA MOTORS AMERICA, INC.
    G15815630Courtesy of KIA MOTORS AMERICA, INC.
    G15815631Courtesy of KIA MOTORS AMERICA, INC.
  22. When the Electric Water Pump (EWP) begins to operate and the coolant begins to circulate, fill the reservoir tank with coolant.
    NOTE:
    • Friction may damage the bearing if the EWP is operated without coolant.
    • If the coolant circulation is not smooth or air bubbles are still visible, repeat step  21 -  22
    • Operate the battery EWP until the air bleeding is complete.
  23. Stop the EWP operation after air bleeding, and then fill coolant until "MAX" line of the reservoir tank and install the reservoir cap.
    NOTE:
    • If the noise is less during EWP operation and there is no air bubbles in the reservoir tank, the cooling system air bleeding is complete.
    • The cooling system air bleeding and coolant injection are performed perfectly when the coolant is completely cooled. Check the coolant level of the reservoir tank for 2 - 3 days after flushing the coolant.
    • Make sure the quick connector (A) is installed securely.
    G15815632Courtesy of KIA MOTORS AMERICA, INC.
  24. Start the vehicle and then check the coolant hose and pipe connections for leakage.
  25. Install the rear under cover.

    (Refer to Motor and Reduction Gear System - " REAR UNDER COVER  ") 

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