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Home >> Toyota >> 2021 >> Highlander LE, 4WD >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Heating / Air Conditioning System - Service Information (3 Of 3) >> Heater Water Pump >> Removal [12/2019 - 10/2022] >> Procedure

Removal [12/2019 - 10/2022]: Procedure

  1. REMOVE FRONT WHEEL OPENING EXTENSION PAD LH 

    Refer to PROCEDURE - Step 8 [12/2019 - 09/2020] , or refer to PROCEDURE - Step 8 [09/2020 - 10/2022]

  2. REMOVE FRONT WHEEL OPENING EXTENSION PAD RH 

    Refer to PROCEDURE - Step 9 [12/2019 - 09/2020] , or refer to PROCEDURE - Step 9 [09/2020 - 10/2022]

  3. REMOVE NO. 1 ENGINE UNDER COVER 

    Refer to PROCEDURE - Step 10 [12/2019 - 09/2020] , or refer to PROCEDURE - Step 10 [09/2020 - 10/2022]

  4. REMOVE REAR ENGINE UNDER COVER LH 

    Refer to PROCEDURE - Step 11 [12/2019 - 09/2020] , or refer to PROCEDURE - Step 11 [09/2020 - 10/2022]

  5. REMOVE REAR ENGINE UNDER COVER RH 

    Refer to PROCEDURE - Step 12 [12/2019 - 09/2020] , or refer to PROCEDURE - Step 12 [09/2020 - 10/2022]

  6. DRAIN ENGINE COOLANT 

    Refer to PROCEDURE - Step 1

  7. REMOVE WINDSHIELD WIPER MOTOR AND LINK ASSEMBLY 

    Refer to REMOVAL [12/2019 - ]

  8. REMOVE FENDER SPLASH SHIELD SUB-ASSEMBLY REAR LH 

    Refer to PROCEDURE - Step 3

  9. REMOVE FENDER SPLASH SHIELD SUB-ASSEMBLY REAR RH 

    HINT: 

    Perform the same procedure as for the LH side.

  10. REMOVE FRONT FENDER SPLASH SHIELD SEAL FRONT LH 

    Refer to PROCEDURE - Step 5

  11. REMOVE FRONT FENDER SPLASH SHEILD SEAL FRONT RH 

    HINT: 

    Perform the same procedure as for the LH side.

  12. REMOVE FRONT UPPER SUSPENSION TO COWL BRACE SUB-ASSEMBLY LH 

    Refer to PROCEDURE - Step 7

  13. REMOVE FRONT UPPER SUSPENSION TO COWL BRACE SUB-ASSEMBLY RH 

    HINT: 

    Perform the same procedure as for the LH side.

  14. REMOVE COWL VENTILATOR PANEL SUB-ASSEMBLY 

    Refer to PROCEDURE - Step 9

  15. DISCONNECT WATER BY-PASS HOSE ASSEMBLY 
    1. Pull out the retainer to disengage the lock claws and pull off the water by-pass hose assembly from the heater water pump assembly.
      GTY940995Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Retainer
      Pull out
      Pull off
    2. Check that there is no foreign matter on the sealing surfaces of the disconnected water lines. Clean them if necessary.
    3. Cover the disconnected heater water pump assembly and water by-pass hose assembly connector with plastic bags to prevent damage and contamination.
  16. REMOVE HEATER WATER PUMP ASSEMBLY 
    1. Using pliers, grip the claws of the clip and slide the clip to disconnect the water hose.
      GTY943819Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE:
      • Do not apply excessive force to the water hose.
      • Prepare a drain pan or cloth in case the coolant leaks.
    2. Disengage the claw and move the piping clamp as shown in the illustration.
      GTY918148Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Using pliers, grip the claws of the clip and slide the clip to disconnect the water hose.
      NOTE:
      • Do not apply excessive force to the water hose.
      • Prepare a drain pan or cloth in case the coolant leaks.
      GTY918102Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Disconnect the connector.
      GTY918099Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    5. Disengage the clamp.
    6. Remove the 3 nuts, bolt and heater water pump assembly.
      GTY869434Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Nut
      Bolt
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