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Home >> Lexus >> 2019 >> ES 350 Luxury >> Repair and Diagnosis >> External Pages >> Different car >> Section 68 (Hybrid Battery Control System - Service Information (2 Of 3)) >> HV Battery Thermistor >> Removal [06/2018 - 08/2021] >> Procedure

Removal [06/2018 - 08/2021]: Procedure

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2024 Lexus ES 300h, 2023 Lexus ES 300h, 2022 Lexus ES 300h, 2021 Lexus ES 300h, and 2020 Lexus ES 300h. However, it is still accessible from the selected car via links, so may be relevant.
  1. REMOVE HV BATTERY 

    Refer to REMOVAL [06/2018 - 08/2021] 

  2. REMOVE UPPER HV BATTERY COVER SUB-ASSEMBLY 

    Refer to PROCEDURE - Step 3

  3. REMOVE HV BATTERY JUNCTION BLOCK ASSEMBLY 

    Refer to PROCEDURE - Step 19

  4. REMOVE NO. 2 HYBRID BATTERY SHIELD SUB-ASSEMBLY 
    WARNING:

    Be sure to wear insulated gloves and protective goggles.

    1. Remove the 5 nuts.
      GTY762856Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Pull back the rear No. 1 HV battery shield and remove the No. 2 hybrid battery shield sub-assembly from the HV battery.
      GTY762031Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Rear No. 1 HV Battery Shield
      *2 No. 2 Hybrid Battery Shield Sub-assembly
      Pull Back

      HINT: 

      Pull back the rear No. 1 HV battery shield until it is separated from the stud bolt of the No. 2 hybrid battery shield sub-assembly.

  5. REMOVE NO. 1 HV BATTERY INTAKE DUCT LH 
    WARNING:

    Be sure to wear insulated gloves and protective goggles.

    1. Remove the clip to disconnect the No. 1 HV battery intake duct LH from the HV battery.
      GTY762854Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Disengage the claw of hybrid battery thermistor (sensor portion) and remove the No. 1 HV battery intake duct LH.
  6. REMOVE HYBRID BATTERY THERMISTOR 
    WARNING:

    Be sure to wear insulated gloves and protective goggles.

    1. Disengage the clamp.
      GTY762855Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Disengage the 2 claws and remove the No. 1 hybrid battery packing from the HV battery.
      GTY762853Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Disengage the clamp.
      GTY773450Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Disconnect the battery voltage sensor connector.
    5. Disengage the 4 clamps.
      GTY762852Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    6. Disengage the 3 claws of the hybrid battery thermistor (sensor portions) and remove the hybrid battery thermistor from the HV battery.
      GTY763003Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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