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Home >> Lexus >> 2019 >> ES 350 Luxury >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Heating / Air Conditioning System - Service Information (1 Of 2) >> AIR CONDITIONING UNIT (for HV Model) >> Removal [09/2022 - ] >> Procedure

Removal [09/2022 - ]: Procedure

  1. PRECAUTION 
    NOTE:

    Make sure to select face mode before disconnecting the cable from the negative (-) auxiliary battery terminal.

  2. RECOVER REFRIGERANT FROM REFRIGERATION SYSTEM 

    See step  1

  3. REMOVE WINDSHIELD WIPER MOTOR AND LINK ASSEMBLY 

    Refer to REMOVAL [06/2018 - ]

  4. REMOVE FRONT CENTER UPPER SUSPENSION BRACE SUB-ASSEMBLY 

    Refer to PROCEDURE - Step 4

  5. DISCONNECT OUTLET HEATER WATER HOSE 
    1. Using pliers, grip the claws of the clip and slide the clip to disconnect the outlet heater water hose.
      GTY790384Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE:
      • Do not apply excessive force to the outlet heater water hose.
      • Prepare a drain pan or cloth in case the coolant leaks.
  6. DISCONNECT INLET HEATER WATER HOSE 
    1. Using pliers, grip the claws of the clip and slide the clip to disconnect the inlet heater water hose.
      NOTE:
      • Do not apply excessive force to the inlet heater water hose.
      • Prepare a drain pan or cloth in case the coolant leaks.
      GTY790385Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  7. DISCONNECT SUCTION TUBE SUB-ASSEMBLY B 
    1. Remove the bolt and rotate the hook connector as shown in the illustration.
      GTY790399Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Disconnect the suction tube sub-assembly B.
      GTY790401Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Remove the O-ring from the suction tube sub-assembly B.
      NOTE:

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

  8. DISCONNECT AIR CONDITIONING TUBE AND ACCESSORY ASSEMBLY 
    1. Disconnect the air conditioning tube and accessory assembly.
      GTY790400Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Remove the O-ring from the air conditioning tube and accessory assembly.
      NOTE:

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

  9. REMOVE FRONT SEAT ASSEMBLY LH 

    Refer to REMOVAL [09/2022 - ]

  10. REMOVE FRONT SEAT ASSEMBLY RH 

    HINT: 

    Use the same procedure as for the LH side.

  11. REMOVE STEERING COLUMN ASSEMBLY 

    for Manual Tilt and Manual Telescopic Steering Column:

    Refer to REMOVAL [09/2022 - ]

    for Power Tilt and Power Telescopic Steering Column:

    Refer to REMOVAL [09/2022 - ]

  12. REMOVE INSTRUMENT PANEL SAFETY PAD SUB-ASSEMBLY 

    Refer to REMOVAL [09/2022 - ]

  13. REMOVE ECU INTEGRATION BOX RH 

    Refer to PROCEDURE - Step 3

  14. REMOVE STEREO COMPONENT EQUALIZER ASSEMBLY (w/ Active Noise Control System) 

    Refer to PROCEDURE - Step 3

  15. REMOVE COOLER (ROOM TEMP. SENSOR) THERMISTOR 
    1. Disconnect the connector and aspirator pipe to remove the cooler (room temp. sensor) thermistor.
      GTY790356Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  16. REMOVE ACCELERATOR PEDAL PAD 

    Refer to PROCEDURE - Step 3

  17. REMOVE ACCELERATOR PEDAL ASSEMBLY 

    Refer to PROCEDURE - Step 4

  18. REMOVE FRONT FLOOR CAUTION PLATE COVER 
    1. Lift the front floor caution plate cover as shown by the arrow (1) to disengage the claw, and then pull the front floor caution plate cover as shown by the arrow (2) in the illustration to disengage the guide and remove it.
      GTY826886Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Place Hand Here
      Remove in this Direction (1)
      Remove in this Direction (2)
  19. REMOVE REAR NO. 3 AIR DUCT 
    1. Remove the front floor carpet clip.
      GTY790360Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Remove the 2 front floor carpet clips.
      GTY830610Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Disengage the 2 guides and turn back the front floor carpet assembly as shown in the illustration.
      GTY790363Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Disengage the 4 claws and remove the rear No. 3 air duct as shown in the illustration.
      GTY778283Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Remove in this Direction
  20. REMOVE REAR NO. 1 AIR DUCT 
    1. Disengage the 2 claws and remove the rear No. 1 air duct.
      GTY830628Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  21. REMOVE REAR NO. 4 AIR DUCT 
    1. Remove the front floor carpet clip.
      GTY790441Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Remove the 2 front floor carpet clips.
      GTY790439Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Disengage the 2 fasteners.
      GTY806624Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Fastener
    4. Disengage the 2 guides and turn back the front floor carpet assembly as shown in the illustration.
    5. Disengage the 4 claws and remove the rear No. 4 air duct as shown in the illustration.
      GTY819855Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Remove in this Direction
  22. REMOVE REAR NO. 2 AIR DUCT 
    1. Disengage the 2 claws and remove the rear No. 2 air duct.
      GTY790446Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  23. REMOVE FLOOR CARPET BRACKET RH 
    1. Remove the clip.
      GTY804059Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Remove in this Direction
    2. Disengage the claw to remove the floor carpet bracket RH as shown in the illustration.
  24. REMOVE FLOOR CARPET BRACKET LH 
    1. Remove the clip.
      GTY836607Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Remove in this Direction
    2. Disengage the claw to remove the floor carpet bracket LH as shown in the illustration.
  25. REMOVE NO. 1 CONSOLE BOX DUCT 
    1. Disengage the clamp.
      GTY832549Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Remove in this Direction
    2. Remove the clip and No. 1 console box duct as shown in the illustration.
  26. REMOVE NO. 3 DASH PANEL INSULATOR PAD 
    1. Cut each claw of the 2 clips and remove the No. 3 dash panel insulator pad.
      GTY777084Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Cut
      NOTE:

      If the No. 3 dash panel insulator pad is damaged, replace it with a new one.

    2. Remove the 2 clips.
  27. REMOVE NO. 3 INSTRUMENT PANEL TO COWL BRACE SUB-ASSEMBLY 
    1. Disengage each clamp.
      GTY788472Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Bolt
      Nut
    2. Remove the bolt, nut and No. 3 instrument panel to cowl brace sub-assembly.
  28. REMOVE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY WITH MAIN BODY ECU 

    Refer to PROCEDURE - Step 4

  29. REMOVE HYBRID VEHICLE CONTROL ECU 

    Refer to PROCEDURE - Step 3

  30. REMOVE NO. 1 SIDE DEFROSTER NOZZLE DUCT 
    1. Remove the clip and No. 1 side defroster nozzle duct.
      GTY790465Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  31. DISCONNECT INSTRUMENT PANEL WIRE 
    1. Disconnect the connector.
      GTY805549Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Earth Wire *b Connector Holder
      *c Relay Block Holder - -
      Connector Bolt
      Nut - -
    2. Remove the bolt and disconnect the relay block holder.
    3. Remove the 4 bolts and disconnect the 4 earth wires.
    4. Remove the 2 nuts and disconnect the connector holder.
    5. Disengage each clamp.
    6. 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.
      GTY780472Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Release (1)
      Move in this Direction (2)
      NOTE:

      When disconnecting any airbag connector, take care not to damage the airbag wire harness.

    7. Disengage each clamp to separate the instrument panel wire.
  32. REMOVE NO. 1 INSTRUMENT PANEL BRACE SUB-ASSEMBLY 
    1. Remove the bolt and disconnect the earth wire.
      GTY802808Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Earth Wire
    2. Disengage each clamp.
    3. Remove the bolt, screw, nut and No. 1 instrument panel brace sub-assembly.
      GTY809373Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Bolt
      Screw
      Nut
  33. REMOVE NO. 2 INSTRUMENT PANEL BRACE SUB-ASSEMBLY 
    1. Disengage each clamp.
      GTY799292Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Remove the bolt, screw, nut and No. 2 instrument panel brace sub-assembly.
      GTY822344Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Bolt
      Screw
      Nut
  34. 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. Turn back the front floor mat as shown in the illustration.
      GTY830625Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Disconnect the drain cooler hose.
      GTY826099Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Cooler Unit Drain Hose Grommet
      NOTE:

      If the drain cooler hose is disconnected from the cooler unit drain hose grommet, make sure to replace the cooler unit drain hose grommet with a new one. Failure to do so may lead to water ingress.

    3. Remove the cooler unit drain hose grommet.
      GTY790406Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Remove the 2 hole plugs.
      GTY790425Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    5. Remove the 3 bolts.
      GTY790424Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    6. Remove the 4 bolts (A).
      GTY830705Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Bolt (A) Bolt (B)
      Nut - -
    7. Remove the bolt (B) and disconnect the brake pedal assembly.
    8. Remove the nut.
    9. Disengage each clamp.
      GTY804649Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Remove in this Direction - -
    10. Disconnect each connector.
    11. Remove the instrument panel reinforcement assembly with air conditioner unit assembly as shown in the illustration.
    12. Disengage the claw and 2 guides to disconnect the ID code box (immobiliser code ECU) as shown in the illustration.
      GTY808133Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Remove in this Direction
  35. REMOVE AIR CONDITIONER UNIT ASSEMBLY 
    1. Remove the 3 bolts and the air conditioner unit assembly from the instrument panel reinforcement assembly.
      GTY790421Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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