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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)) >> HV BATTERY (for 1Motor-HEV Model) >> Removal [09/2023 - ] >> Procedure

Removal [09/2023 - ]: 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. PRECAUTION 
    NOTE:

    After turning the ignition switch off, waiting time may be required before disconnecting the cable from the negative (-) auxiliary battery terminal.

    Refer to BEFORE DISCONNECTING BATTERY [09/2023 - ]

    Refer to PRECAUTION [09/2023 - ]

  2. READ VALUE USING GTS 
    1. GTY1075510Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Read the Data List.

        Powertrain > HV Battery > Data List 

        Tester Display
        Hybrid Battery Temperature 1
        Hybrid Battery Temperature 2
        Hybrid Battery Temperature 3
        Hybrid Battery Temperature 4
        Hybrid Battery Temperature 5
        Hybrid Battery Temperature 6
        NOTE:

        If any of the temperatures listed in "Hybrid Battery Temperature 1 to 6" are 50°C or more, leave the vehicle until the temperature drops to less than 50°C.

  3. REMOVE SERVICE PLUG GRIP 

    Refer to PROCEDURE - Step 6

  4. REMOVE NO. 1 ENGINE COVER SUB-ASSEMBLY 
    Refer to PROCEDURE - Step 22
  5. REMOVE AIR CLEANER ASSEMBLY WITH NO. 1 AIR CLEANER HOSE 

    Refer to PROCEDURE - Step 10

  6. REMOVE AIR CLEANER HOSE ASSEMBLY 

    Refer to PROCEDURE - Step 11

  7. REMOVE BATTERY COVER LOCK STRIKER 
    Refer to PROCEDURE - Step 16
  8. REMOVE INVERTER TERMINAL COVER 
    Refer to PROCEDURE - Step 17
  9. CHECK TERMINAL VOLTAGE 
    Refer to PROCEDURE - Step 18
  10. REMOVE INVERTER COVER GASKET 
    Refer to PROCEDURE - Step 31
  11. INSTALL INVERTER COVER GASKET 
    Refer to PROCEDURE - Step 4
  12. INSTALL INVERTER TERMINAL COVER 
    Refer to PROCEDURE - Step 19
  13. INSTALL BATTERY COVER LOCK STRIKER 
    Refer to PROCEDURE - Step 10
  14. INSTALL AIR CLEANER HOSE ASSEMBLY 
    Refer to PROCEDURE - Step 19
  15. INSTALL AIR CLEANER ASSEMBLY WITH NO. 1 AIR CLEANER HOSE 
    Refer to PROCEDURE - Step 20
  16. INSTALL NO. 1 ENGINE COVER SUB-ASSEMBLY 
    Refer to PROCEDURE - Step 58
  17. REMOVE BATTERY COOLING BLOWER ASSEMBLY 

    Refer to REMOVAL [09/2023 - ]

  18. REMOVE NO. 3 FLOOR BOARD 
    1. GTY1200861Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  19. REMOVE NO. 2 FLOOR BOARD 
    1. GTY1200855Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  20. REMOVE NO. 1 FLOOR BOARD 
    1. GTY1194668Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  21. REMOVE NO. 3 CONSOLE BOX MOUNTING BRACKET (for Captain Seat Type) 
    WARNING:

    Be sure to wear insulated gloves.
    1. GTY1194663Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  22. REMOVE NO. 4 CONSOLE BOX MOUNTING BRACKET (for Captain Seat Type) 
    WARNING:

    Be sure to wear insulated gloves.
    1. GTY1200838Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  23. REMOVE NO. 6 HV BATTERY SHIELD SUB-ASSEMBLY 
    WARNING:

    Be sure to wear insulated gloves.
    1. for 60/40 Split Seat Type:
      GTY1131434Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Service Plug Grip *2 Battery Cover Lock Striker
      *a Projection *b Turn
      *c Button - -
      1. Insert the projection of the service plug grip and turn the button of the battery cover lock striker counterclockwise to release the lock to remove the battery cover lock striker.
      2. Remove the 2 bolts, 2 nuts and No. 6 HV battery shield sub-assembly from the HV battery.
    2. for Captain Seat Type:
      GTY1197242Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Service Plug Grip *2 Battery Cover Lock Striker
      *a Projection *b Turn
      *c Button - -
      1. Insert the projection of the service plug grip and turn the button of the battery cover lock striker counterclockwise to release the lock to remove the battery cover lock striker.
      2. Remove the No. 6 HV battery shield sub-assembly from the HV battery.
  24. DISCONNECT NO. 2 HV FLOOR UNDER WIRE 
    See step  47
  25. DISCONNECT HV BATTERY CHARGER WIRE 
    WARNING:

    Be sure to wear insulated gloves.
    1. GTY1129994Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Shield Ground - -
      1. Using an insulated tool, remove the 2 nuts and disconnect the HV battery charger wire.
        NOTE:

        To prevent the wire harness from being caught, make sure to bundle the wire harness using insulating tape or equivalent.

      2. Remove the nut and disconnect the shield ground from the HV battery.
  26. DISCONNECT FLOOR WIRE 
    WARNING:

    Be sure to wear insulated gloves.
    1. w/ Voltage Inverter:
      GTY1133379Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Shield Ground - -
      1. Remove the 2 nuts and disconnect the shield ground from the HV battery.
      2. Disconnect the 2 No. 1 traction battery device box assembly connectors.
        NOTE:

        Insulate each disconnected high-voltage connector with insulating tape. Wrap the connector from the wire harness side to the end of the connector.

    2. GTY1133720Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  27. REMOVE HV BATTERY 
    WARNING:

    Be sure to wear insulated gloves.

    NOTE:
    • Do not allow foreign matter, such as grease or oil, to adhere to the bolts of the HV battery.
    • To prevent the wire harness from being caught, make sure to bundle the wire harness using insulating tape or equivalent.
    • Use cardboard or another similar material to protect the HV battery and vehicle body from damage.
    • Since the HV battery is very heavy, 2 people are needed to remove it. When removing the HV battery, be careful not to damage the parts around it.
    • When removing the HV battery from the vehicle, do not allow it to contact the vehicle.
    • When removing/installing/moving the HV battery, make sure not to tilt it more than 30°.
    • Insulate the disconnected terminals or connectors with insulating tape.
    • If the HV battery has been struck or dropped, replace it.
    1. GTY1200857Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. GTY1198351Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Tilt the HV battery and place cardboard.
      2. Pull the HV battery to the front of the vehicle as shown in the illustration.
      3. Pull the HV battery to the RH side of the vehicle as shown in the illustration.
    3. GTY1238690Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. To prevent scratches or damage, use protective sheets to protect the vehicle interior and body.
      2. Using a suitable adaptor such as straps and 4 hooks, remove the HV battery while tilting it.
        NOTE:

        Set the 4 hooks as shown in the illustration.

        GTY1238577Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *a Hook installation hole
        *b Hook installation hole of 8 mm or less in thickness
  28. REMOVE NO. 3 HYBRID BATTERY INTAKE DUCT 
    WARNING:

    Be sure to wear insulated gloves.
    1. GTY1194666Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  29. REMOVE NO. 3 HV BATTERY INTAKE DUCT LH 
    WARNING:

    Be sure to wear insulated gloves.
    1. GTY1200854Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  30. REMOVE NO. 1 HYBRID BATTERY CARRIER BRACKET 
    WARNING:

    Be sure to wear insulated gloves.
    1. GTY1133761Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  31. REMOVE NO. 2 HYBRID BATTERY CARRIER BRACKET 
    WARNING:

    Be sure to wear insulated gloves.
    1. GTY1133758Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  32. REMOVE NO. 3 HV BATTERY CARRIER BRACKET 
    WARNING:

    Be sure to wear insulated gloves.
    1. GTY1133759Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. GTY1133757Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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