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Home › Genesis › 2023 › G80 2.5T Advanced, AWD › Repair and Diagnosis › External Pages › Different car › Section 108 (Heater System) › Heater Unit › Repair Procedures › Replacement

Repair Procedures: Replacement

WARNING: This page is about a different car, the 2024 Genesis G80. However, it is still accessible from the selected car via links, so may be relevant.
  1. Disconnect the negative (-) battery terminal.
  2. Recover the refrigerant with a recovery/recycling/charging station.
  3. When the engine cools down, drain the engine coolant from the radiator.

    (Refer to Engine Mechanical System - "COOLANT " - 2.5L)

    (Refer to "COOLANT " - 3.5L)

  4. Remove the cowl top cover.

    (Refer to Body - "COWL TOP COVER ")

  5. Remove the front wiper motor.

    (Refer to Body Electrical System - "FRONT WIPER MOTOR ")

  6. Loosen the mounting bolts and remove the expansion valve (A) from the evaporator core.

    Tightening torque: 

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

    G15555064Courtesy of HYUNDAI MOTOR AMERICA
    NOTE:
    • Plug or cap the lines immediately after disconnecting them to avoid the intrusion of moisture and dust.
    • When installing, replace with a new O-ring.
  7. Remove the heater hose (A).
    G15555065Courtesy 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.
  8. Loosen the cowl cross member mounting bolts.
    G15555066Courtesy of HYUNDAI MOTOR AMERICA
  9. Remove the front seat assembly.

    (Refer to Body - "FRONT SEAT ASSEMBLY ")

  10. Remove the floor console assembly.

    (Refer to Body (interior and Exterior) - ("FLOOR CONSOLE ASSEMBLY ")

  11. Remove the both front pillar trim.

    (Refer to Body (Interior and Exterior) - ("FRONT PILLAR TRIM ")

  12. Remove the front door scuff trim.

    (Refer to Body (Interior and Exterior) - "DOOR SCUFF TRIM ")

  13. Remove the cowl side trim.

    (Refer to Body (Interior and Exterior) - "COWL SIDE TRIM ")

  14. Remove crash pad lower panel.

    (Refer to Body (Interior and Exterior) - "CRASH PAD LOWER PANEL ")

  15. Remove the crash pad center panel.

    (Refer to Body (Interior and Exterior) - "CRASH PAD CENTER PANEL ")

  16. Remove the steering column shroud lower panel.

    (Refer to Body (Interior and Exterior - "STEERING COLUMN SHROUD PANEL ")

  17. Remove the steering wheel.

    (Refer to Steering System - "STEERING WHEEL ")

  18. Remove the multifunction switch.

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

  19. Pull down the steering column after loosening the mounting bolts and through bolts.

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

  20. Remove the accelerator pedal plug hole (A).
    G15555067Courtesy of HYUNDAI MOTOR AMERICA
  21. Loosen the mounting bolt and nut, remove the accelerator pedal (A).
    G15555068Courtesy of HYUNDAI MOTOR AMERICA
  22. Disconnect the accelerator pedal connector (A).
    G15555069Courtesy of HYUNDAI MOTOR AMERICA
  23. Remove the rear air duct (B) after separate the floor carpet (A).
    G15555070Courtesy of HYUNDAI MOTOR AMERICA
  24. Disconnect the SRSCM connector (A).
    G15555071Courtesy of HYUNDAI MOTOR AMERICA
  25. spread the front tunnel pad (A) in the direction of the arrow.

    [LH] 

    G15555072Courtesy of HYUNDAI MOTOR AMERICA

    [RH] 

    G15555073Courtesy of HYUNDAI MOTOR AMERICA
  26. Remove the rear heating duct (A).
    G15555074Courtesy of HYUNDAI MOTOR AMERICA
  27. Disconnect the rear monitor connector (A) and remove the various clips, detach the wiring harness (B).
    G15555075Courtesy of HYUNDAI MOTOR AMERICA
    NOTE:
    • (C) Take care not to change the left and right side of the connector.
  28. Disconnect the junction box connectors (A).
    G15555076Courtesy of HYUNDAI MOTOR AMERICA
  29. Disconnect the connectors (A) after loosen the mounting clips in the front pillar.

    [Driver's side] 

    G15555077Courtesy of HYUNDAI MOTOR AMERICA

    [Passenger's side] 

    G15555078Courtesy of HYUNDAI MOTOR AMERICA
  30. Disconnect the multi box connectors (A).

    [Driver's side] 

    G15555079Courtesy of HYUNDAI MOTOR AMERICA

    [Passenger's side] 

    G15555080Courtesy of HYUNDAI MOTOR AMERICA
  31. Remove the drain hose (A).
    G15555081Courtesy of HYUNDAI MOTOR AMERICA
  32. Remove the bowler unit lower mounting bolt (A).

    Tightening torque: 

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

    [Driver's side] 

    G15555082Courtesy of HYUNDAI MOTOR AMERICA

    [Passenger's side] 

    G15555083Courtesy of HYUNDAI MOTOR AMERICA
  33. Disconnect the heater & blower unit connectors.

    [Driver's side] 

    1. Press the lock pin disconnect the console ON/OFF actuator connector (A), loosen the mounting screws and remove the console ON/OFF actuator (B).
      G15555084Courtesy of HYUNDAI MOTOR AMERICA
    2. Loosen the mounting screw and remove the driver's shower duct (A).
      G15555085Courtesy of HYUNDAI MOTOR AMERICA
    3. Press the lock pin and disconnect the auto defogging sensor actuator connector (A) and driver's temperature control actuator connector (B).
      G15555086Courtesy of HYUNDAI MOTOR AMERICA
    4. Press the lock pin and disconnect the driver's mode control actuator connector (A) and (B).
      G15555087Courtesy of HYUNDAI MOTOR AMERICA

    [Passenger's side] 

    1. Loosen the mounting screw and remove the passenger's shower duct (A).
      G15555088Courtesy of HYUNDAI MOTOR AMERICA
    2. Press the lock pin and disconnect the console mode control actuator connector (A) and console temperature control actuator connector (B).
      G15555089Courtesy of HYUNDAI MOTOR AMERICA
    3. Press the lock pin and disconnect the console temperature control actuator connector (A).
      G15555090Courtesy of HYUNDAI MOTOR AMERICA
    4. Press the lock pin and disconnect the A/C-Heater bypass actuator connector (A).
      G15555091Courtesy of HYUNDAI MOTOR AMERICA
    5. Press the lock pin and disconnect the passenger's temperature control connector (A).
      G15555092Courtesy of HYUNDAI MOTOR AMERICA
    6. Press the lock pin and disconnect the power mosfet connector (A).
      G15555093Courtesy of HYUNDAI MOTOR AMERICA
    7. Press the lock pin and disconnect the vent actuator connector (A).
      G15555094Courtesy of HYUNDAI MOTOR AMERICA
    8. Press the lock pin and disconnect the passenger's mode control actuator connector (A).
      G15555095Courtesy of HYUNDAI MOTOR AMERICA
    9. Press the lock pin and disconnect the intake actuator connector (A).
      G15555096Courtesy of HYUNDAI MOTOR AMERICA
    10. Press the lock pin and then disconnect the blower motor connector (A).
      G15555097Courtesy of HYUNDAI MOTOR AMERICA
    11. Remove the IBU unit (B) after loosen the IBU mounting bolt and nut, connector (A).
      G15555098Courtesy of HYUNDAI MOTOR AMERICA
      G15555099Courtesy of HYUNDAI MOTOR AMERICA
  34. Loosen the mounting bolts and nuts, remove the crash pad and heater & blower unit (A) from the body.
    G15555100Courtesy of HYUNDAI MOTOR AMERICA
  35. Loosen the heater & blower unit mounting bolt (A).

    Tightening torque: 

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

    G15555101Courtesy of HYUNDAI MOTOR AMERICA
  36. Loosen the mounting nuts and remove the heater & blower unit (A) from the crash pad.

    Tightening torque: 

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

    G15555102Courtesy of HYUNDAI MOTOR AMERICA
  37. Loosen the mounting screws and detach the heater unit (A) from the heater & blower assembly.
    G15555103Courtesy of HYUNDAI MOTOR AMERICA
  38. Install in the reverse order of removal.

    Information 

    • Replace any damaged clips.
    • Make sure the connector is connected properly.
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