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Home >> Kia >> 2022 >> Niro EV EX >> Repair and Diagnosis >> External Pages >> Different car >> Section 113 (Heater System) >> Heater Unit >> Repair Procedures >> Replacement

Repair Procedures: Replacement

WARNING: This page is about a different car, the 2020 Kia Niro EV. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove the battery (-) terminal.
  2. Use the retrieval/reproduction/charging device to retrieve the refrigerant.
    WARNING:
    • Use the refrigerant retrieval/charge device exclusively used for the electric compressor to inject the designated refrigerant (R-1234yf) and refrigeration oil (POE). If the refrigeration oil (PAG) for the ordinary car is injected, the compressor may be damaged or a safety-related accident may occur.
  3. Unfasten the mounting bolts and separate the expansion valve (A) from the evaporator core.

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

    G13375930Courtesy of KIA MOTORS AMERICA, INC.
    NOTE:
    • After removing the line, mount the plug or cap to protect the system from humidity and dust.
    • Replace the O-ring with a new one for installation.
  4. Unfasten the mounting bolts and remove the pipe (A) from the indoor unit.

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

    G13375931Courtesy of KIA MOTORS AMERICA, INC.
  5. Remove the cowl top cover.

    (Refer to Body - "COWL TOP COVER ")

  6. Unfasten the cowl crossbar assembly mounting bolts (A).
    G13375932Courtesy of KIA MOTORS AMERICA, INC.
  7. Remove the front pillar trim.

    (Refer to Body - "FRONT PILLAR TRIM ")

  8. Remove the floor console assembly.

    (Refer to Body - "FLOOR CONSOLE ASSEMBLY ")

  9. Remove the side trims on both sides.

    (Refer to Body - "COWL SIDE TRIM ")

  10. Remove the crash pad lower panel.

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

  11. Remove the steering column shroud lower panel.

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

  12. Remove the steering wheel.

    (Refer to Steering System - "STEERING WHEEL ")

  13. Remove the multifunction switch.

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

  14. Unfasten the mounting nuts and penetrating bolts on the front and lower the steering column.

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

  15. Separate the various connectors (A) connected to the interior junction box.
    G13375933Courtesy of KIA MOTORS AMERICA, INC.
  16. Separate the various connectors (A) connected to the multi-box.

    [Driver Seat] 

    G13375934Courtesy of KIA MOTORS AMERICA, INC.

    [Passenger Seat] 

    G13375935Courtesy of KIA MOTORS AMERICA, INC.
  17. After loosening the mounting nuts, remove the rear console bracket (A).
    G13375936Courtesy of KIA MOTORS AMERICA, INC.
  18. After loosening the mounting bolt, remove the floor air duct (A).
    G13375937Courtesy of KIA MOTORS AMERICA, INC.
  19. After loosening the mounting nuts, remove the front console bracket (A).
    G13375938Courtesy of KIA MOTORS AMERICA, INC.
  20. Disconnect the airbag system control module connector (A).
    G13375939Courtesy of KIA MOTORS AMERICA, INC.
  21. Separate the floor carpet (A) to the back.
    G13375940Courtesy of KIA MOTORS AMERICA, INC.
  22. Remove the mounting bolts at the bottom of the blower unit.

    Tightening Torque:  3.9 - 5.9 N.m (0.4 - 0.6 kgf.m, 2.9 - 4.3 lb.ft)

    G13375941Courtesy of KIA MOTORS AMERICA, INC.
  23. Separate the drain hose (A).
    G13375942Courtesy of KIA MOTORS AMERICA, INC.
  24. Remove the mounting clip on the front pillar, and separate the connectors (A).

    [Driver Seat] 

    G13375943Courtesy of KIA MOTORS AMERICA, INC.

    [Passenger Seat] 

    G13375944Courtesy of KIA MOTORS AMERICA, INC.
  25. Unfasten the mounting nuts & bolts and remove the crash pad and heater and blower unit (A) altogether from the vehicle.
    G13375945Courtesy of KIA MOTORS AMERICA, INC.
  26. Remove the various connectors from the heater and blower unit.

    [Driver Seat] 

    1. Separate the mode control actuator connector (A), duct sensor connector (B) and the PTC connector (C).
      G13375946Courtesy of KIA MOTORS AMERICA, INC.

    [Passenger Seat] 

    1. Separate the temperature control actuator connector (A) and evaporator temperature sensor connector (B).
      G13375947Courtesy of KIA MOTORS AMERICA, INC.
    2. Separate the mode control actuator connector (B) and the auto defogging actuator connector (A).
      G13375948Courtesy of KIA MOTORS AMERICA, INC.
    3. Separate the intake actuator connector (A).
      G13375949Courtesy of KIA MOTORS AMERICA, INC.
    4. Separate the blower motor connector (A).
      G13375950Courtesy of KIA MOTORS AMERICA, INC.
  27. Unfasten the heater and blower unit mounting bolts and the PTC grounding bolts.

    Tightening Torque:  3.9 - 5.9 N.m (0.4 - 0.6 kgf.m, 2.9 - 4.3 lb.ft)

    G13375951Courtesy of KIA MOTORS AMERICA, INC.
  28. Unfasten the mounting nuts and remove the heater and blower unit from the crash pad.

    Tightening Torque:  3.9 - 5.9 N.m (0.4 - 0.6 kgf.m, 2.9 - 4.3 lb.ft)

    G13375952Courtesy of KIA MOTORS AMERICA, INC.
  29. Unfasten the screw and separate the blower unit (B) from the heater unit (A).
    G13375953Courtesy of KIA MOTORS AMERICA, INC.
    G13375954Courtesy of KIA MOTORS AMERICA, INC.
  30. To install, reverse the removal procedure.
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