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Home >> Lexus >> 2024 >> TX 350 Base, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 16 (Hybrid Battery Control System - Service Information (2 Of 3)) >> WATER PUMP WITH MOTOR (for PHEV Model) >> Removal [12/2023 - ] >> Procedure

Removal [12/2023 - ]: Procedure

WARNING: This page is about a different car, the 2024 Lexus TX 550h+ and 2024 Lexus TX 500h. However, it is still accessible from the selected car via links, so may be relevant.
  1. DRAIN COOLANT (for Inverter) 

    Refer to PROCEDURE - Step 1

  2. REMOVE INVERTER WATER PUMP ASSEMBLY 
    1. GTY1238716Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 No. 2 Inverter Cooling Hose *2 No. 3 Inverter Cooling Hose
      1. Disconnect the inverter water pump assembly connector.
        NOTE:

        To prevent coolant from entering the inverter water pump assembly connector, perform the following procedure. 

        • Wipe off any coolant around the inverter water pump assembly connector before disconnecting it.
        • Apply insulating tape to the connectors of the wire harness and inverter water pump assembly to prevent the entry of coolant.
      2. Remove the 2 bolts and inverter water pump assembly from the HV water pump bracket sub-assembly.
        NOTE:

        If the inverter water pump assembly has been struck or dropped, replace it.

      3. Slide the 2 clips and disconnect the No. 2 inverter cooling hose and No. 3 inverter cooling hose.
        NOTE:
        • Put pieces of cloth into the pipes and disconnected hoses or cover the pipes and hoses with plastic bags to prevent foreign matter from entering the inverter water pump with motor assembly and inverter cooling system.
        • Do not apply excessive force to the hoses.