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Home >> Kia >> 2020 >> Optima EX >> Repair and Diagnosis >> External Pages >> Different car >> Section 38 (Blower System) >> Blower Unit >> Repair Procedures >> Replacement
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Repair Procedures: Replacement

WARNING: This page is about a different car, the 2020 Hyundai Kona. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION:
  • When prying with a flat-tip screwdriver or use a prying trim tool, wrap it with protective tape, and apply protective tape around the related parts, to prevent damage.
  1. Disconnect the negative (-) battery terminal.
  2. Recover the refrigerant with a recovery/recycling/charging station.
  3. When the engine is cool, drain the engine coolant from the radiator.

    (Refer to Engine Mechanical System - "COOLANT ")

  4. Remove the engine cover.

    (Refer to Engine Mechanical System - "ENGINE COVER ")

  5. Remove the bolts and the expansion valve (A) from the evaporator core.

    Information 

    Tightening torque:

    8.8 - 13.7 N.m (0.9 - 1.4 kgf.m, 6.5 - 10.1 Ib-ft)

    G12606304Courtesy of HYUNDAI MOTOR AMERICA
    NOTE:
    • Plug or cap the lines immediately after disconnecting them to avoid moisture and dust contamination.
    • When installing, replace with a new O-ring.
  6. Disconnect the heater hoses (A) from the heater unit.
    G12606305Courtesy of HYUNDAI MOTOR AMERICA
    CAUTION:
    • Engine coolant will run out when the hoses are disconnected; drain it into a clean drip pan. Be sure not to let coolant spill on electrical parts or painted surfaces. If any coolant spills, rinse it off immediately.
  7. Loosen the cowl cross member mounting bolts.
    G12606306Courtesy of HYUNDAI MOTOR AMERICA
  8. Remove the floor console assembly.

    (Refer to Body - "FLOOR CONSOLE ASSEMBLY ")

  9. Remove the crash pad lower panel.

    (Refer to Body - "CRASH PAD LOWER PANEL ")

  10. Remove both sides of the front pillar trim.

    (Refer to Body - "FRONT PILLAR TRIM ")

  11. Remove the cowl side trim.

    (Refer to Body - "COWL SIDE TRIM ")

  12. Remove the steering column shroud lower panel.

    (Refer to Body - "STEERING COLUMN SHROUD PANEL ")

  13. Remove the steering wheel.

    (Refer to Steering System - "STEERING WHEEL ")

  14. Remove the multifunction switch.

    (Refer to Body Electrical System - "MULTIFUNCTION SWITCH ")

  15. Lower the steering column after loosening the mounting bolts.

    (Refer to Steering System - "MDPS ASSEMBLY ")

  16. Remove the shift lever assembly.

    (Refer to Automatic Transmission System - "SHIFT LEVER ")

  17. Separate the floor carpet (A) to obtain space for removing the rear heating duct.
    G12606307Courtesy of HYUNDAI MOTOR AMERICA
    G12606308Courtesy of HYUNDAI MOTOR AMERICA
  18. Loosen the mounting nut and remove the rear air duct (A).
    G12606309Courtesy of HYUNDAI MOTOR AMERICA
  19. Disconnect the airbag control module (SRSCM) connector (A).
    G12606310Courtesy of HYUNDAI MOTOR AMERICA
  20. Disconnect the junction box connectors (A).
    G12606311Courtesy of HYUNDAI MOTOR AMERICA
  21. Disconnect the multi box connectors (A).

    [Driver's Side] 

    G12606312Courtesy of HYUNDAI MOTOR AMERICA

    [Passenger's side] 

    G12606313Courtesy of HYUNDAI MOTOR AMERICA
  22. Disconnect the connectors (A) and the mounting clips in the front pillar.

    [Driver's side] 

    G12606314Courtesy of HYUNDAI MOTOR AMERICA

    [Passenger's side] 

    G12606315Courtesy of HYUNDAI MOTOR AMERICA
  23. Loosen the blower unit mounting bolts.
    G12606316Courtesy of HYUNDAI MOTOR AMERICA
  24. Remove the drain hose (A).
    G12606317Courtesy of HYUNDAI MOTOR AMERICA
  25. After loosening the bolts and nuts remove the main crash pad and cowl cross bar assembly (A) together.
    G12606318Courtesy of HYUNDAI MOTOR AMERICA
  26. Disconnect the heater & blower unit connectors.

    [Driver's side] 

    1. Disconnect the mode control actuator connector (A) and remove the wiring mounting clips.
      G12606319Courtesy of HYUNDAI MOTOR AMERICA
    2. Disconnect the evaporator temperature sensor connector (A) and remove the wiring mounting clips.
      G12606320Courtesy of HYUNDAI MOTOR AMERICA

    [Passenger's side] 

    1. Disconnect the blower motor connector (A) and remove the wiring mounting clips.
      G12606321Courtesy of HYUNDAI MOTOR AMERICA
    2. Disconnect the temperature control actuator connector (A), defogging actuator connector (B) and remove the wiring mounting clips.
    3. Disconnect the intake actuator connector (C), cluster ionizer connector (D) and remove the wiring mounting clips.
      G12606322Courtesy of HYUNDAI MOTOR AMERICA
  27. Loosen the heater & blower unit mounting bolt (A).
    G12606323Courtesy of HYUNDAI MOTOR AMERICA
  28. Remove the heater and blower unit (A) from the crash pad (B) after loosening the mounting nuts.

    Tightening torque: 

    3.9 - 5.9 N.m (0.4 - 0.6 kgf.m, 2.9 - 4.3 Ib-ft)

    G12606324Courtesy of HYUNDAI MOTOR AMERICA
  29. Separate the blower unit (A) from the heater unit (B) after loosening the screws.
    G12606325Courtesy of HYUNDAI MOTOR AMERICA
    G12606326Courtesy of HYUNDAI MOTOR AMERICA
  30. To install, reverse the removal procedure.
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