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Home >> Lexus >> 2022 >> NX 450h+ Base >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Heating / Air Conditioning System - Service Information (1 Of 2) >> Air Conditioning Unit >> Removal [11/2021 - ] >> Procedure

Removal [11/2021 - ]: Procedure

  1. RECOVER REFRIGERANT FROM REFRIGERATION SYSTEM 

    See step  1

  2. REMOVE FRONT FENDER PANEL CUSHION 
    1. for LH Side:

      Refer to PROCEDURE - Step 2

    2. for RH Side:
      1. Use the same procedure as for the LH side.
  3. REMOVE HOOD TO FRONT FENDER SEAL LH 

    Refer to PROCEDURE - Step 3

  4. REMOVE HOOD TO FRONT FENDER SEAL RH 
    1. Use the same procedure as for the LH side.
  5. REMOVE WINDSHIELD WIPER MOTOR AND LINK ASSEMBLY 

    Refer to REMOVAL [11/2021 - ]

  6. REMOVE COWL VENTILATOR SPLASH SHIELD LH 

    Refer to PROCEDURE - Step 7

  7. REMOVE COWL VENTILATOR PANEL SUB-ASSEMBLY 

    Refer to PROCEDURE - Step 8

  8. DISCONNECT NO. 1 SUCTION TUBE 
    1. GTY1071036Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Remove the bolt.
      2. Rotate the hook connector as shown in the illustration and disconnect the No. 1 suction tube.
      3. Remove the O-ring from the No. 1 suction tube.
        NOTE:

        Seal the openings of the disconnected parts using vinyl tape to prevent entry of moisture and foreign matter.

  9. DISCONNECT NO. 5 DISCHARGE TUBE 
    1. GTY1070370Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Disconnect the No. 5 discharge tube.
      2. Remove the O-ring from the No. 5 discharge tube.
        NOTE:

        Seal the openings of the disconnected parts using vinyl tape to prevent entry of moisture and foreign matter.

  10. DISCONNECT OUTLET HEATER WATER HOSE 
    1. GTY1071196Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Using pliers, grip the claws of the hose clip and slide the hose clip to disconnect the outlet heater water hose.
        NOTE:
        • Do not apply excessive force to the outlet heater water hose.
        • Prepare a drain pan or cloth in case the coolant leaks.
  11. DISCONNECT INLET HEATER WATER HOSE A 
    1. GTY1070519Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Using pliers, grip the claws of the hose clip and slide the hose clip to disconnect the inlet heater water hose A.
        NOTE:
        • Do not apply excessive force to the inlet heater water hose A.
        • Prepare a drain pan or cloth in case the coolant leaks.
  12. REMOVE STEERING COLUMN ASSEMBLY 

    Refer to REMOVAL [11/2021 - 03/2023] , or refer to REMOVAL [03/2023 - ]

  13. REMOVE NO. 3 AIR DUCT SUB-ASSEMBLY 

    See step  2

  14. REMOVE INSTRUMENT PANEL SAFETY PAD SUB-ASSEMBLY 

    Refer to REMOVAL [11/2021 - ]

  15. REMOVE FRONT SEAT ASSEMBLY LH 

    Refer to REMOVAL [11/2021 - ]

  16. REMOVE FRONT SEAT ASSEMBLY RH 
    1. Use the same procedure as for the LH side.
  17. REMOVE INTEGRATION CONTROL SUPPLY 

    Refer to REMOVAL [11/2021 - ]

  18. REMOVE NO. 2 CONSOLE BOX DUCT 
    1. GTY1068654Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  19. REMOVE NO. 1 CONSOLE BOX DUCT 
    1. GTY1068621Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  20. REMOVE NO. 2 HEATER TO REGISTER DUCT 
    1. GTY1068623Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  21. REMOVE ACCELERATOR PEDAL PAD 

    Refer to PROCEDURE - Step 5

  22. REMOVE ACCELERATOR PEDAL 
    Refer to PROCEDURE - Step 6
  23. REMOVE COOLER (ROOM TEMP. SENSOR) THERMISTOR 
    1. GTY1068224Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  24. REMOVE FRONT FLOOR CAUTION PLATE COVER 
    1. GTY1069800Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  25. DISCONNECT FRONT FLOOR FRONT CARPET ASSEMBLY 
    1. GTY1068624Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  26. REMOVE REAR NO. 2 AIR DUCT 
    1. GTY1068633Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  27. REMOVE REAR NO. 4 AIR DUCT 
    1. GTY1069796Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  28. REMOVE REAR NO. 1 AIR DUCT 
    1. GTY1068595Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  29. REMOVE REAR NO. 3 AIR DUCT 
    1. GTY1068597Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  30. REMOVE NO. 3 DASH PANEL INSULATOR PAD 
    1. GTY1068599Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  31. REMOVE METER MIRROR SUB-ASSEMBLY (w/ Headup Display) 

    Refer to REMOVAL [11/2021 - ]

  32. REMOVE ROOM LIGHT CONTROL RELAY (w/ Illumination ECU) 

    Refer to REMOVAL [11/2021 - ]

  33. REMOVE NO. 3 INSTRUMENT PANEL TO COWL BRACE SUB-ASSEMBLY 

    Refer to PROCEDURE - Step 17

  34. REMOVE ECU INTEGRATION BOX LH WITH POWER DISTRIBUTION BOX ASSEMBLY 
    Refer to PROCEDURE - Step 18
  35. REMOVE ECU INTEGRATION BOX RH 

    Refer to PROCEDURE - Step 8

  36. DISCONNECT INSTRUMENT PANEL WIRE 

    HINT: 

    The illustration shown is an example only. The illustration may differ from the actual parts according to the model.

    1. GTY1071441Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Remove the 4 bolts and disconnect the 4 earth wires.
      2. Disconnect the connector.
      3. Disengage each clamp.
    2. GTY1070894Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Lock Lever - -
      Release (1) Move in this Direction (2)
      1. Push down the part (A) in the direction indicated by the arrow (1) to release the lock, and then move the lock lever in the direction indicated by the arrow (2) shown in the illustration to disconnect the connector.
      2. Disengage the 4 clamps.
    3. GTY1070100Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Disconnect each connector and instrument panel wire.
  37. REMOVE NO. 2 INSTRUMENT PANEL BRACE SUB-ASSEMBLY 
    1. GTY1068601Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  38. REMOVE NO. 1 INSTRUMENT PANEL BRACE SUB-ASSEMBLY 
    1. GTY1068611Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  39. DISCONNECT DRAIN COOLER HOSE 
    1. GTY1069525Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Disengage the clip.
      2. Disconnect the drain cooler hose from the cooler unit drain hose grommet.
        NOTE:

        If the cooler unit drain hose grommet was removed from the vehicle body, replace it with a new one.

  40. REMOVE COOLER UNIT DRAIN HOSE GROMMET 

    HINT: 

    Perform this procedure only when replacement of the cooler unit drain hose grommet is necessary.

    1. GTY1069304Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Turn back the No. 1 floor mat as shown in the illustration.
      2. Remove the cooler unit drain hose grommet.
        NOTE:

        After removing the cooler unit drain hose grommet, replace it with a new one to prevent water from entering.

  41. REMOVE HOLE PLUG 
    1. GTY1069132Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  42. REMOVE INSTRUMENT PANEL REINFORCEMENT ASSEMBLY WITH AIR CONDITIONER UNIT ASSEMBLY 
    NOTE:
    • Be sure to support the air conditioner unit assembly when removing it. Failure to do so may cause the bracket of the air conditioner unit assembly to break.
    • When disassembling the air conditioner unit assembly, eliminate static electricity by touching the vehicle body to prevent the components from being damaged.
    1. GTY1069891Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. GTY1068584Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. GTY1069810Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Remove in this Direction - -
    4. GTY1069875Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Remove in this Direction - -
  43. REMOVE AIR CONDITIONER UNIT ASSEMBLY 
    1. GTY1069142Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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