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Home › Kia › 2020 › Cadenza Technology › Repair and Diagnosis › External Pages › Different car › Section 41 (Heater System (PHEV)) › Heater Unit › Repair Procedures › Replacement

Repair Procedures: Replacement

WARNING: This page is about a different car, the 2020 Kia Niro. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION: When prying with a flat-tip screwdriver or a prying trim tool, wrap a protective tape around the related parts and the tool to prevent damage.
  1. Disconnect the negative (-) battery terminal.
  2. Recover the refrigerant with a recovery/recycling/charging station.
    WARNING: If PAG oil mixes into the POE oil of the system, dielectric breakdown may occur due to decreased volumetric resistivity and the A/C compressor may not work.
  3. When the engine is cool, drain the engine coolant from the radiator.

    (Refer to Engine Mechanical System - "COOLANT ")

  4. Remove the cowl top cover.

    (Refer to Body - "COWL TOP COVER ")

  5. Remove the expansion valve cover (A) after loosening the bolt.

    Tightening torque  : 7.8 - 11.8 N.m (0.8 - 1.2 kgf.m, 5.8 - 8.7 Ib.ft)

    G13351639Courtesy of KIA MOTORS AMERICA, INC.
    NOTE:
    • Plug or cap the lines immediately after disconnecting them to avoid moisture and dust contamination.
    • When installing, always replace the o-ring with a new one.
  6. Remove the inlet (A) and outlet (B) heater hoses from the heater core.
    G13351640Courtesy of KIA MOTORS AMERICA, INC.
    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 bar assembly mounting bolts (A).
    G13351641Courtesy of KIA MOTORS AMERICA, INC.
  8. Remove the front seat assemblies on both sides.

    (Refer to Body - "FRONT SEAT ASSEMBLY ")

  9. Remove the floor console.

    (Refer to Body - "FLOOR CONSOLE ASSEMBLY ")

  10. Remove the front pillar trims on both sides.

    (Refer to Body - "FRONT PILLAR TRIM ")

  11. Remove the cowl side trims on both sides.

    (Refer to Body - "COWL SIDE TRIM ")

  12. Remove the crash pad lower panel.

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

  13. Remove the steering column shroud lower panel.

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

  14. Remove the steering wheel.

    (Refer to Steering System - "STEERING WHEEL ")

  15. Remove the multifunction switch.

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

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

    (Refer to Steering System - "STEERING COLUMN AND SHAFT ")

  17. Remove the front door scuff trim.

    (Refer to Body - "DOOR SCUFF TRIM ")

  18. Remove the shift lever assembly.

    (Refer to DCT (Double Clutch Transmission) System - "SHIFT LEVER ")

  19. Disconnect the airbag control module (SRSCM) connector (A).
    G13351642Courtesy of KIA MOTORS AMERICA, INC.
  20. Remove the rear duct (A).

    [LH] 

    G13351643Courtesy of KIA MOTORS AMERICA, INC.

    [RH] 

    G13351644Courtesy of KIA MOTORS AMERICA, INC.
  21. Put away the floor carpet (A).

    [Driver side] 

    G13351645Courtesy of KIA MOTORS AMERICA, INC.

    [Passenger side] 

    G13351646Courtesy of KIA MOTORS AMERICA, INC.
  22. Remove the mounting bolt and remove the rear heating ducts (A).

    [Driver side] 

    G13351647Courtesy of KIA MOTORS AMERICA, INC.

    [Passenger side] 

    G13351648Courtesy of KIA MOTORS AMERICA, INC.
  23. Disconnect the passenger compartment junction box connectors (A).
    G13351649Courtesy of KIA MOTORS AMERICA, INC.
  24. Disconnect the multi box connectors (A).

    [LH] 

    G13351650Courtesy of KIA MOTORS AMERICA, INC.

    [RH] 

    G13351651Courtesy of KIA MOTORS AMERICA, INC.
  25. Disconnect the connector (A) and the mounting clips in the front pillar.

    [LH] 

    G13351652Courtesy of KIA MOTORS AMERICA, INC.

    [RH] 

    G13351653Courtesy of KIA MOTORS AMERICA, INC.
  26. Remove the drain hose (A).
    G13351654Courtesy of KIA MOTORS AMERICA, INC.
  27. After loosening the bolts, remove the main crash pad and cowl cross bar assembly (A) altogether.
    G13351655Courtesy of KIA MOTORS AMERICA, INC.
  28. Disconnect the heater & blower unit connectors.
    1. Disconnect the intake actuator connector (A).
      G13351656Courtesy of KIA MOTORS AMERICA, INC.
    2. Disconnect the mode control actuator (A) and auto defogging actuator (B) connectors, and then remove the wiring fixing clip.
      G13351657Courtesy of KIA MOTORS AMERICA, INC.
    3. Disconnect the duct sensor (A), mode control actuator (B) and temperature control actuator (C) connectors, and then remove the wiring mounting clips.
      G13351658Courtesy of KIA MOTORS AMERICA, INC.
    4. Temperature actuator (A), to remove the evaporator temperature sensor (B) connector, to remove the wiring fixing clip.
      G13351659Courtesy of KIA MOTORS AMERICA, INC.
    5. Remove the blower motor connector (A).
    G13351660Courtesy of KIA MOTORS AMERICA, INC.
  29. Loosen the heater & blower unit mounting bolt (A).
    G13351661Courtesy of KIA MOTORS AMERICA, INC.
  30. Loosen the mounting nuts and remove the heater and blower units (A) from the crash pad.
    G13351662Courtesy of KIA MOTORS AMERICA, INC.
  31. Separate the blower unit (B) from the heater unit (A) after loosening the screws.
    G13351663Courtesy of KIA MOTORS AMERICA, INC.
    G13351664Courtesy of KIA MOTORS AMERICA, INC.
    G13351665Courtesy of KIA MOTORS AMERICA, INC.
  32. install in the reverse order of removal
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