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Home >> Lexus >> 2023 >> LC 500h >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Heating / Air Conditioning System - Service Information (2 Of 2) >> Heater Water Pump >> Removal [01/2017 - ] >> Procedure

Removal [01/2017 - ]: Procedure

  1. REMOVE V-BANK COVER SUB-ASSEMBLY 

    Refer to PROCEDURE - Step 8 [01/2017 - 06/2019] , or refer to PROCEDURE - Step 8 [06/2019 - 05/2023] , or refer to PROCEDURE - Step 8 [05/2023 - ]

  2. REMOVE RADIATOR SUPPORT TO FRAME SEAL RH 
    1. Remove the 6 clips.
      GTY805545Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Detach the claw and guide and remove the radiator support to frame seal RH.
  3. REMOVE ENGINE ROOM SIDE COVER LH 
    1. Remove the 3 clips.
      GTY805546Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Detach the claw and guide and remove the engine room side cover LH.
  4. REMOVE LOWER RADIATOR AIR DEFLECTOR 
    1. Remove the 9 clips.
      GTY805544Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Detach the claw and guide and remove the lower radiator air deflector.
  5. REMOVE NO. 1 ENGINE UNDER COVER ASSEMBLY 

    Refer to PROCEDURE - Step 14 [01/2017 - 06/2019] , or refer to PROCEDURE - Step 14 [06/2019 - 05/2023] , or refer to PROCEDURE - Step 14 [05/2023 - ]

  6. REMOVE NO. 2 ENGINE UNDER COVER ASSEMBLY 

    Refer to PROCEDURE - Step 15 [01/2017 - 06/2019] , or refer to PROCEDURE - Step 15 [06/2019 - 05/2023] , or refer to PROCEDURE - Step 15 [05/2023 - ]

  7. DRAIN ENGINE COOLANT 

    Refer to PROCEDURE - Step 4

  8. REMOVE RADIATOR SUPPORT TO CROSSMEMBER BRACE SUB-ASSEMBLY RH 
    1. Remove the 2 bolts and radiator support to crossmember brace sub-assembly RH.
      GTY806078Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  9. REMOVE NO. 1 AIR CLEANER INLET 

    Refer to PROCEDURE - Step 7

  10. REMOVE AIR CLEANER ASSEMBLY 

    Refer to PROCEDURE - Step 6 [01/2017 - 05/2023] , or refer to PROCEDURE - Step 6 [05/2023 - ]

  11. REMOVE OIL PUMP MOTOR CONTROLLER ASSEMBLY 
    1. Remove the 2 bolts.
      GTY785512Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Detach the clamp and disconnect the ground wire.
    3. Detach the clamp.
      GTY785524Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Remove the 2 nuts.
    5. Move the oil pump motor controller assembly to the position shown in the illustration.
      GTY794487Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Movement Direction
  12. REMOVE HEATER ACCESSORY ASSEMBLY 
    1. Disconnect the clamps shown in the illustration.
      GTY785992Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Clamp
      Clip
    2. Using pliers, grip the claws of the 2 hose clips and slide the hose clip to disconnect the water pipe sub-assembly.
      NOTE:
      • Do not apply excessive force to the water pipe sub-assembly.
      • Prepare a drain pan or cloth in case the coolant leaks.
    3. Remove the nut.
      GTY805237Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Disconnect the connector.
      GTY822953Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Nut
      Connector
    5. Remove the 2 nuts.
    6. Move the heater accessory assembly (with water pipe sub-assembly) to the center of the engine room and remove it as shown in the illustration.
      GTY830614Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Remove in this Direction
    7. Using pliers, grip the claws of the 2 hose clips and slide the hose clip to remove the water pipe sub-assembly.
      GTY805229Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE:
      • Do not apply excessive force to the water pipe sub-assembly.
      • Prepare a drain pan or cloth in case the coolant leaks.
    8. Remove the 4 hose clips from the water pipe sub-assembly.
      GTY805226Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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