LEMON Manuals: Even more car manuals for everyone
Home >> Genesis >> 2019 >> G90 5.0 Ultimate, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 175 (Heater System) >> Heater Unit >> Repair Procedures >> Replacement

Repair Procedures: Replacement

WARNING: This page is about a different car, the 2017 Genesis G90. 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 cowl top cover.

    (Refer to Body - "COWL TOP COVER ")

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

    Tightening Torque: 

    3.9 - 5.9 N.m (0.8 - 1.2 kgf.m, 5.8 - 8.7 lb-ft)

    Fig 1: Locating Expansion Valve
    G11420032Courtesy 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.
    Fig 2: Locating Heater Hoses
    G11420033Courtesy 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.
    Fig 3: Loosening Cowl Cross Member Mounting Bolts
    G11420034Courtesy 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 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 crash pad lower panel.

    (Refer to Body (Interior and Exterior) - "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 crash pad under cover [RH] (A).
    Fig 4: Locating RH Crash Pad Under Cover
    G11420035Courtesy of HYUNDAI MOTOR AMERICA
  18. Disconnect the under lamp connector (A) CO2 sensor connector (B).
    Fig 5: Locating Under Lamp Connector And CO2 Sensor Connector
    G11420036Courtesy of HYUNDAI MOTOR AMERICA
  19. Remove the front air duct (A) after loosening the mounting nut.
    Fig 6: Locating Front Air Duct With Mounting Nut
    G11420037Courtesy of HYUNDAI MOTOR AMERICA
  20. Disconnect the airbag control module (SRSCM) connector (A).
    Fig 7: Locating Airbag Control Module (SRSCM) Connector
    G11420038Courtesy of HYUNDAI MOTOR AMERICA
  21. Disconnect the junction box connectors (A).
    Fig 8: Locating Junction Box Connectors
    G11420039Courtesy of HYUNDAI MOTOR AMERICA
  22. Disconnect the multi box connectors (A).

    [Driver's Side] 

    Fig 9: Locating Multi Box Connectors - Driver'S Side
    G11420040Courtesy of HYUNDAI MOTOR AMERICA

    [Passenger's Side] 

    Fig 10: Locating Multi Box Connectors - Passenger'S Side
    G11420041Courtesy of HYUNDAI MOTOR AMERICA
  23. Disconnect the connectors (A) and the mounting clips in the front pillar.

    [Driver's Side] 

    Fig 11: Locating Front Pillar Connectors - Driver'S Side
    G11420042Courtesy of HYUNDAI MOTOR AMERICA

    [Passenger's Side] 

    Fig 12: Locating Front Pillar Connectors - Passenger'S Side
    G11420043Courtesy of HYUNDAI MOTOR AMERICA
  24. Remove the drain hose (A).
    Fig 13: Locating Drain Hose
    G11420044Courtesy of HYUNDAI MOTOR AMERICA
  25. Loosen the blower unit mounting bolts.

    Tightening Torque: 

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

    [Driver's Side] 

    Fig 14: Loosening Blower Unit Mounting Bolts - Driver'S Side
    G11420045Courtesy of HYUNDAI MOTOR AMERICA

    [Passenger's Side] 

    Fig 15: Loosening Blower Unit Mounting Bolts - Passenger'S Side
    G11420046Courtesy of HYUNDAI MOTOR AMERICA
  26. After loosening the bolts and nuts remove the main crash pad and cowl cross bar assembly (A) together.
    Fig 16: Locating Main Crash Pad And Cowl Cross Bar Assembly
    G11420047Courtesy of HYUNDAI MOTOR AMERICA
  27. Disconnect the heater & blower unit connectors.

    [Driver's Side] 

    1. Disconnect the auto defogging actuator connector (A), mode control actuator connector (B) and remove the wiring mounting clips.
      Fig 17: Locating Auto Defogging Actuator Connector And Mode Control Actuator Connector - Driver'S Side
      G11420048Courtesy of HYUNDAI MOTOR AMERICA
    2. Disconnect the temperature control actuator connector (A), evaporator temperature sensor connector (B), console temperature actuator connector (C) and remove the wiring mounting clips.
      Fig 18: Locating Temperature Control Actuator Connector, Evaporator Temperature Sensor Connector And Console Temperature Actuator Connector
      G11420049Courtesy of HYUNDAI MOTOR AMERICA
    3. Disconnect the console mode control actuator (A), console ON/OFF control actuator (B) and remove the wiring mounting clips.
    Fig 19: Locating Console Mode Control Actuator And Console ON/OFF Control Actuator
    G11420050Courtesy of HYUNDAI MOTOR AMERICA

    [Passenger's Side] 

    1. Disconnect the intake actuator connector (A), cluster ionizer connector (B), air flow actuator connector (C) and remove the wiring mounting clips.
      Fig 20: Locating Intake Actuator Connector, Cluster Ionizer Connector And Air Flow Actuator Connector
      G11420051Courtesy of HYUNDAI MOTOR AMERICA
    2. Disconnect the mode control actuator connector (A), temperature control actuator connector (B), heater control unit connector (C) and remove the wiring mounting clips.
      Fig 21: Locating Mode Control Actuator Connector, Temperature Control Actuator Connector And Heater Control Unit Connector
      G11420052Courtesy of HYUNDAI MOTOR AMERICA
    3. Disconnect the power mosfet connector (A), evaporator temperature sensor connector (B) and remove the wiring mounting clips.
      Fig 22: Locating Power Mosfet Connector And Evaporator Temperature Sensor Connector
      G11420053Courtesy of HYUNDAI MOTOR AMERICA
    4. Disconnect the blower motor connector (A) and remove the wiring mounting clips.
      Fig 23: Locating Blower Motor Connector
      G11420054Courtesy of HYUNDAI MOTOR AMERICA
  28. Loosen the heater & blower unit mounting bolt (A).

    Tightening Torque: 

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

    Fig 24: Loosening Heater & Blower Unit Mounting Bolt
    G11420055Courtesy of HYUNDAI MOTOR AMERICA
  29. Remove the heater and blower unit (A) from the crash pad after loosening the mounting nuts.

    Tightening Torque: 

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

    Fig 25: Locating Heater And Blower Unit With Mounting Nuts
    G11420056Courtesy of HYUNDAI MOTOR AMERICA
  30. Separate the blower unit (B) from the heater unit (A) after loosening the screws.
    Fig 26: Locating Blower Unit And Heater Unit (1 Of 2)
    G11420057Courtesy of HYUNDAI MOTOR AMERICA
    Fig 27: Locating Blower Unit And Heater Unit (2 Of 2)
    G11420058Courtesy of HYUNDAI MOTOR AMERICA
  31. To install, reverse the removal procedure.
scientia non olet · About LEMON Manuals