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Home >> Lexus >> 2019 >> GX 460 Base >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Air Conditioning System (Service Information) >> Rear Air Conditioning Unit >> Removal [08/2016 - ] >> Procedure

Removal [08/2016 - ]: Procedure

  1. REMOVE UPPER RADIATOR SUPPORT SEAL 

    Refer to PROCEDURE - Step 15 [08/2015 - 08/2020] , or refer to PROCEDURE - Step 15 [08/2020 - ]

  2. RECOVER REFRIGERANT FROM REFRIGERATION SYSTEM 

    See step  1[08/2015 - 08/2020], or see step  1[08/2020 - ]

  3. DRAIN ENGINE COOLANT 
    1. Drain the engine coolant (Refer to PROCEDURE - Step 5 ).
  4. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL 
    WARNING:

    Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.

    NOTE:
    • w/ Navigation System:

      After the engine switch is turned off, the display and navigation module display (navigation system) records various types of memory and settings. As a result, after turning the engine switch off, be sure to wait for the time specified in the following table before disconnecting the cable from the negative (-) battery terminal.

      Waiting Time before Disconnecting Cable from Negative (-) Battery Terminal

      Condition Waiting Time
      Vehicle enrolled in safety connect system 6 minutes
      Vehicle not enrolled in safety connect system 1 minute
    • When disconnecting the cable, some systems need to be initialized after the cable is reconnected (Refer to INITIALIZATION [08/2015 - 08/2019] , or refer to INITIALIZATION [08/2019 - 08/2021] , or refer to INITIALIZATION [08/2021 - 08/2022] , or refer to INITIALIZATION [08/2022 - ] ).
  5. REMOVE REAR NO. 2 SEAT ASSEMBLY (w/ Rear No. 2 Seat) 
    1. Remove the rear No. 2 seat assembly (Refer to REMOVAL [08/2015 - ] ).
  6. REMOVE REAR NO. 1 SEATBACK ASSEMBLY 
    1. for Separate Seat Type:

      Remove the rear No. 1 seatback assembly (Refer to REMOVAL [08/2016 - 08/2019] , or refer to REMOVAL [08/2019 - ] ).

    2. for 60/40 Split Slide Walk-in Seat Type LH Side:

      Remove the rear No. 1 seatback assembly (Refer to REMOVAL [08/2016 - ] ).

    3. for 60/40 Split Slide Walk-in Seat Type RH Side

      Remove the rear No. 1 seatback assembly (Refer to REMOVAL [08/2016 - ] ).

  7. REMOVE REAR NO. 1 FLOOR STEP COVER (w/ Rear No. 2 Seat) 

    Refer to PROCEDURE - Step 16 [08/2016 - 08/2019] , or refer to PROCEDURE - Step 16 [08/2019 - ]

  8. REMOVE QUARTER SCUFF PLATE RH (w/ Rear No. 2 Seat) 

    Refer to PROCEDURE - Step 18 [08/2016 - 08/2019] , or refer to PROCEDURE - Step 18 [08/2019 - ]

  9. REMOVE REAR DOOR SCUFF PLATE RH 

    Refer to PROCEDURE - Step 20 [08/2016 - 08/2019] , or refer to PROCEDURE - Step 20 [08/2019 - ]

  10. REMOVE REAR DOOR OPENING TRIM WEATHERSTRIP RH 

    Refer to PROCEDURE - Step 22 [08/2016 - 08/2019] , or refer to PROCEDURE - Step 22 [08/2019 - ]

  11. REMOVE OUTER LAP BELT ANCHOR COVER 

    Refer to PROCEDURE - Step 23 [08/2016 - 08/2019] , or refer to PROCEDURE - Step 23 [08/2019 - ]

  12. REMOVE TONNEAU COVER ASSEMBLY (w/ Tonneau Cover) 

    Refer to PROCEDURE - Step 31 [08/2016 - 08/2019] , or refer to PROCEDURE - Step 31 [08/2019 - ]

  13. REMOVE REAR NO. 1 SEAT OUTER LAP BELT ANCHOR COVER 

    Refer to PROCEDURE - Step 32 [08/2016 - 08/2019] , or refer to PROCEDURE - Step 32 [08/2019 - ]

  14. REMOVE NO. 1 LUGGAGE COMPARTMENT TRIM HOOK 

    Refer to PROCEDURE - Step 33 [08/2016 - 08/2019] , or refer to PROCEDURE - Step 33 [08/2019 - ]

  15. REMOVE NO. 1 TONNEAU COVER HOLDER CAP 

    Refer to PROCEDURE - Step 34 [08/2016 - 08/2019] , or refer to PROCEDURE - Step 34 [08/2019 - ]

  16. REMOVE FRONT DECK SIDE TRIM COVER 

    Refer to PROCEDURE - Step 35 [08/2016 - 08/2019] , or refer to PROCEDURE - Step 35 [08/2019 - ]

  17. REMOVE ASSIST GRIP PLUG (w/ Rear No. 2 Seat) 

    Refer to PROCEDURE - Step 36 [08/2016 - 08/2019] , or refer to PROCEDURE - Step 36 [08/2019 - ]

  18. REMOVE ASSIST GRIP SUB-ASSEMBLY (w/ Rear No. 2 Seat) 

    Refer to PROCEDURE - Step 37 [08/2016 - 08/2019] , or refer to PROCEDURE - Step 37 [08/2019 - ]

  19. REMOVE DECK TRIM SIDE PANEL ASSEMBLY RH 

    Refer to PROCEDURE - Step 39 [08/2016 - 08/2019] , or refer to PROCEDURE - Step 39 [08/2019 - ]

  20. REMOVE REAR QUARTER TRIM PANEL ASSEMBLY RH 

    Refer to PROCEDURE - Step 43 [08/2016 - 08/2019] , or refer to PROCEDURE - Step 43 [08/2019 - ]

  21. DISCONNECT AIR CONDITIONING TUBE AND ACCESSORY ASSEMBLY 
    1. Remove the bolt.
      GTY260745Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Disconnect the air conditioning tube and accessory assembly.
      NOTE:
      • Do not use a screwdriver or similar tool to disconnect the tube.
      • Seal the openings of the disconnected parts using vinyl tape to prevent moisture and foreign matter from entering them.
    3. Remove the 2 O-rings from the air conditioning tube and accessory assembly.
    4. Using pliers, grip the claws of the clips and slide the 2 clips.
    5. Disconnect the heater water inlet hose and heater water outlet hose.
  22. REMOVE REAR SIDE NO. 2 AIR DUCT 
    1. Detach the 2 clips.
      GTY274209Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Detach the clamp and remove the duct.
  23. REMOVE REAR SIDE NO. 3 AIR DUCT 
    1. Detach the 2 clips and remove the duct.
      GTY286180Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  24. REMOVE REAR SIDE NO. 1 AIR DUCT 
    1. Detach the 2 claws and remove the cooler plate.
      GTY260797Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Swing the bottom of the duct sideways and remove the duct.
      GTY274206Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  25. REMOVE REAR COOLING UNIT ASSEMBLY 
    1. Disconnect the 4 connectors and detach the 3 clamps.
      GTY274205Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Remove the 5 bolts and rear cooling unit.
  26. REMOVE CURTAIN SHIELD AIRBAG ASSEMBLY RH 

    Refer to PROCEDURE - Step 5

  27. REMOVE REAR ROOF NO. 5 AIR DUCT 
    1. Detach the clip and remove the duct.
      GTY264014Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  28. REMOVE REAR ROOF NO. 4 AIR DUCT 
    1. Detach the clip and remove the duct.
      GTY264003Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  29. REMOVE REAR ROOF NO. 3 AIR DUCT 
    1. Detach the clip and remove the duct.
      GTY264004Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  30. REMOVE REAR ROOF NO. 2 AIR DUCT 
    1. Detach the clip and remove the duct.
      GTY264006Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  31. REMOVE REAR ROOF NO. 1 AIR DUCT 
    1. Detach the 4 clips and remove the duct.
      GTY260798Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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