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Home >> Kia >> 2018 >> Optima Plug-In Hybrid EX >> Repair and Diagnosis >> Engine Mechanical >> Cooling Fan >> Engine Cooling System (PHEV) >> Radiator (Engine) >> Repair Procedures >> Removal And Installation

Removal And Installation

  1. Disconnect the negative battery terminal.
  2. Remove the air duct.

    (Refer to Intake and Exhaust System - "AIR CLEANER ")

  3. Remove the engine room under cover.

    (Refer to Engine and Transaxle Assembly - "ENGINE ROOM UNDER COVER ")

  4. Drain the coolant.

    (Refer to Cooling System - "COOLANT ")

  5. Disconnect the cooling fan control module connector (A).
    G12352704Courtesy of KIA MOTORS AMERICA, INC.
  6. Disconnect the radiator upper hose (A) from the radiator.
    G12352705Courtesy of KIA MOTORS AMERICA, INC.
  7. Disconnect the radiator lower hose (A) from the radiator.
    G12352706Courtesy of KIA MOTORS AMERICA, INC.
  8. Remove the front bumper cover.

    (Refer to Body (Interior and Exterior) - "FRONT BUMPER COVER ")

  9. Remove the RH headlamp.

    (Refer to Body Electrical System - "HEADLAMPS ")

  10. Disconnect the radiator reservoir hose (A).
    G12352707Courtesy of KIA MOTORS AMERICA, INC.
  11. Disconnect the hood latch release handle cable (A).
    G12352708Courtesy of KIA MOTORS AMERICA, INC.
  12. Disconnect the hood switch connector (A).
    G12352709Courtesy of KIA MOTORS AMERICA, INC.
  13. Remove the radiator support upper member assembly (A).

    Tightening Torque: 

    21.6 - 26.5 N.m (2.2 - 2.7 kgf.m, 15.9 - 19.5 lb.ft)

    G12352710Courtesy of KIA MOTORS AMERICA, INC.
  14. Disconnect the front impact sensor (FIS) connector (A).

    [LH] 

    G12352711Courtesy of KIA MOTORS AMERICA, INC.

    [RH] 

    G12352712Courtesy of KIA MOTORS AMERICA, INC.
  15. Separate the hybrid starter generator (HSG) water pipe (A).

    Tightening Torque: 

    4.9 - 7.9 N.m (0.5 - 0.8 kgf.m, 3.6 - 5.8 lb.ft)

    G12352713Courtesy of KIA MOTORS AMERICA, INC.
  16. Separate inverter radiator (A) from the radiator.

    Tightening Torque: 

    4.9 - 7.9 N.m (0.5 - 0.8 kgf.m, 3.6 - 5.8 lb.ft)

    G12352714Courtesy of KIA MOTORS AMERICA, INC.
  17. Remove the RH air guard (A).
    G12352715Courtesy of KIA MOTORS AMERICA, INC.
  18. Separate the condenser from the radiator (A) and then pull the radiator (A) upward to remove it from engine room.
    G12352716Courtesy of KIA MOTORS AMERICA, INC.
  19. Remove the LH air guard (A).
    G12352717Courtesy of KIA MOTORS AMERICA, INC.
  20. Remove the cooling fan assembly (A) from the radiator (B).

    Tightening Torque: 

    4.9 - 7.9 N.m (0.5 - 0.8 kgf.m, 3.6 - 5.8 lb.ft)

    G12352718Courtesy of KIA MOTORS AMERICA, INC.
  21. Install in the reverse order of removal.
  22. Fill the radiator with coolant and check for leaks.