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Home >> Lexus >> 2021 >> LS 500h AWD >> Repair and Diagnosis >> Hybrid/Electric Powertrain >> Electric Motor Systems >> Hybrid Battery Control System - Service Information (2 Of 5) >> HV Battery >> Removal [10/2017 - 09/2018] >> Procedure

Removal [10/2017 - 09/2018]: Procedure

  1. PRECAUTION 
    NOTE:
    • After turning the power switch off, waiting time may be required before disconnecting the cable from the negative (-) auxiliary battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) auxiliary battery terminal notices before proceeding with work.

      Refer to PRECAUTION [10/2017 - 09/2019]

    • When the cable is disconnected from the negative (-) auxiliary battery terminal, some systems need to be initialized after the cable is reconnected.

      Refer to INITIALIZATION [10/2017 - 09/2018]

    • If the HV battery has been struck or dropped, replace it.
    • When connecting a connector to the HV battery, confirm that the connector is securely connected through the following:

      - Push the connector until a click sound is heard.

      - Visually check and confirm that the connector is securely connected by pulling on it.

    • Make sure to insulate the high-voltage connectors and terminals of the HV battery with insulating tape after removing it.

      If the HV battery stored without insulating the connectors and terminals, electric shock or fire may result.

    • When performing repairs around the HV battery, such as using a tap, do not allow metal shavings to enter the HV battery.
    • Do not touch any high voltage wire harnesses, connectors or parts with bare hands.
    • Hold the areas shown in the illustration and lift the HV battery.
      GTY785035Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 No. 1 HV Battery Carrier Sheet
    • Do not break the No. 1 HV battery carrier sheet.
    • Do not allow foreign matter, such as grease or oil, to adhere to the bolts or nuts of the HV battery.
    • Do not put your hands into the openings of the HV battery.
    • When removing/installing/moving the HV battery assembly, make sure not to tilt it more than 80°.
    • Do not climb on top of or stand on the HV battery.
    • Do not allow any foreign matter or water to enter the HV battery.
    • If any bolts, nuts or clips are dropped into the HV battery, make sure to remove them.
  2. READ VALUE USING TECHSTREAM 
    1. Connect the Techstream to the DLC3.
    2. Turn the power switch on (IG).
    3. Enter the following menus: Powertrain / HV Battery / Data List / Hybrid Battery Temperature 1 to 6.

      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
    4. Read the Data List.
      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. AIR SUSPENSION CONTROL PROHIBITED (w/ Air Suspension) 

    Refer to PRECAUTION [10/2017 - ]

  4. REMOVE LUGGAGE COMPARTMENT MAT SUB-ASSEMBLY 

    Refer to PROCEDURE - Step 24

  5. DISCONNECT CABLE FROM NEGATIVE AUXILIARY BATTERY TERMINAL 

    Refer to PROCEDURE - Step 3

    NOTE:

    When disconnecting the cable, some systems need to be initialized after the cable is reconnected.

    Refer to INITIALIZATION [10/2017 - 09/2018]

  6. REMOVE TOOL BOX 

    Refer to PROCEDURE - Step 27

  7. REMOVE LUGGAGE COMPARTMENT FLOOR MAT 

    Refer to PROCEDURE - Step 23

  8. REMOVE LUGGAGE COMPARTMENT TRIM COVER RH 

    Refer to PROCEDURE - Step 26

  9. REMOVE LUGGAGE COMPARTMENT TRIM COVER LH 

    Refer to PROCEDURE - Step 25

  10. REMOVE SIDE TRIM BOX 

    Refer to PROCEDURE - Step 14

  11. REMOVE REAR FLOOR FINISH PLATE 

    Refer to PROCEDURE - Step 11

  12. REMOVE LOWER INNER LUGGAGE COMPARTMENT TRIM COVER 

    Refer to PROCEDURE - Step 28

  13. REMOVE NO. 1 LUGGAGE COMPARTMENT LIGHT ASSEMBLY 

    Refer to REMOVAL [10/2017 - ]

  14. REMOVE FRONT LUGGAGE COMPARTMENT TRIM COVER 

    Refer to PROCEDURE - Step 29

  15. REMOVE REAR LUGGAGE COMPARTMENT TRIM COVER 

    Refer to PROCEDURE - Step 31

  16. REMOVE LUGGAGE COMPARTMENT TRIM COVER ASSEMBLY RH 

    Refer to PROCEDURE - Step 15

  17. REMOVE LUGGAGE COMPARTMENT TRIM COVER ASSEMBLY LH 

    Refer to PROCEDURE - Step 12

  18. REMOVE REAR LUGGAGE COMPARTMENT TRAY BRACKET RH 

    Refer to PROCEDURE - Step 17

  19. REMOVE REAR LUGGAGE COMPARTMENT TRAY BRACKET LH 

    HINT: 

    Perform the same procedure as for the RH side.

  20. REMOVE SERVICE PLUG GRIP 

    Refer to REMOVAL [10/2017 - 09/2018]

  21. REMOVE INVERTER COVER ASSEMBLY RH 

    Refer to PROCEDURE - Step 9

  22. REMOVE COWL TOP VENTILATOR LOUVER SUB-ASSEMBLY 

    Refer to REMOVAL [10/2017 - 10/2020]

  23. REMOVE CONNECTOR COVER ASSEMBLY 

    Refer to PROCEDURE - Step 12

  24. CHECK TERMINAL VOLTAGE 

    Refer to PROCEDURE - Step 13

  25. INSTALL CONNECTOR COVER ASSEMBLY 

    Refer to PROCEDURE - Step 15

  26. DISCONNECT FLOOR UNDER WIRE 
    1. Detach the claw, clamp and remove the battery terminal connector cover.
      GTY800102Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Remove the nut and disconnect the HV floor under wire.
      GTY800104Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  27. REMOVE SUB-BATTERY MODULE ASSEMBLY 

    Refer to PROCEDURE - Step 19

  28. REMOVE NO. 3 EARTH WIRE 
    1. GTY806346Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Remove the bolt and No. 3 earth wire.

  29. REMOVE AUXILIARY BATTERY 

    Refer to PROCEDURE - Step 4

  30. REMOVE EARTH WIRE 
    1. GTY806347Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Remove the 2 bolts and earth wire.

  31. REMOVE BATTERY CARRIER CATCH BRACKET SUB-ASSEMBLY 

    Refer to PROCEDURE - Step 19

  32. REMOVE BATTERY CARRIER ASSEMBLY 

    Refer to PROCEDURE - Step 20

  33. REMOVE REAR STEERING CONTROL ECU (w/ Dynamic Rear Steering) 

    Refer to PROCEDURE - Step 8

  34. REMOVE NO. 1 LUGGAGE ROOM WIRE 
    1. w/ Air Suspension:
      1. Disconnect the connector from the height control compressor.
        GTY807513Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      2. Disengage clamp and 3 claws.
    2. Disconnect the connectors.
      GTY825256Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *A w/ Air Suspension *B w/ Dynamic Rear Steering
      *C w/ 100W Voltage Inverter *D Relay Block A
      *E Relay Block B - -
      GTY802607Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *A w/o Air Suspension *B w/ 100W Voltage Inverter
      *C Relay Block A *D Relay Block B
    3. w/ Dynamic Rear Steering:
      1. Detach the 2 clamps.
      2. Remove the bolt (E).
    4. w/ 100W Voltage Inverter:
      1. Detach the clamp.
      2. Disconnect the connector.
    5. Relay block A:
      1. Remove the bolt (A), bolt (B) and 2 nuts.
    6. Relay block B:
      1. Remove the 2 bolts (C).
    7. Remove the bolt (D).
    8. Detach the each clamps and remove the No. 1 luggage room wire.
  35. REMOVE REAR SEAT CUSHION ASSEMBLY (for Fixed Seat Type) 

    Refer to PROCEDURE - Step 4

  36. REMOVE REAR SEAT CUSHION LOCK HOOK (for Fixed Seat Type) 

    Refer to PROCEDURE - Step 7

  37. REMOVE NO. 1 SEAT ARMREST CAP (for Fixed Seat Type) 

    Refer to PROCEDURE - Step 5

  38. REMOVE REAR SEATBACK ASSEMBLY (for Fixed Seat Type) 

    Refer to PROCEDURE - Step 6

  39. REMOVE REAR SEAT BACK HOLDER (for Fixed Seat Type) 

    Refer to PROCEDURE - Step 8

  40. REMOVE REAR SEAT CUSHION ASSEMBLY LH (for Power Seat) 

    Refer to PROCEDURE - Step 4

  41. REMOVE REAR SEAT CUSHION ASSEMBLY RH (for Power Seat) 

    Refer to PROCEDURE - Step 5

  42. REMOVE REAR CENTER SEAT CUSHION ASSEMBLY (for Power Seat) 

    Refer to PROCEDURE - Step 6

  43. REMOVE REAR SEAT CUSHION LOCK HOOK (for Power Seat) 

    Refer to PROCEDURE - Step 7

  44. REMOVE REAR SEATBACK ASSEMBLY LH (for Power Seat) 

    Refer to PROCEDURE - Step 8

  45. REMOVE REAR SEATBACK ASSEMBLY RH (for Power Seat) 

    Refer to PROCEDURE - Step 9

  46. REMOVE REAR CENTER SEAT ARMREST ASSEMBLY (for Power Seat) 

    Refer to PROCEDURE - Step 10

  47. REMOVE REAR DOOR SCUFF PLATE LH 

    Refer to PROCEDURE - Step 15

  48. REMOVE REAR DOOR SCUFF PLATE RH 

    Refer to PROCEDURE - Step 16

  49. REMOVE REAR SEAT SIDE GARNISH LH 

    Refer to PROCEDURE - Step 23

  50. REMOVE REAR SEAT SIDE GARNISH RH 

    Refer to PROCEDURE - Step 24

  51. REMOVE ROOM PARTITION BOARD ASSEMBLY LH (for Power Seat) 

    Refer to PROCEDURE - Step 17

  52. REMOVE ROOM PARTITION BOARD ASSEMBLY RH (for Power Seat) 

    Refer to PROCEDURE - Step 18

  53. REMOVE NO. 2 EV BATTERY INTAKE DUCT 
    1. GTY800006Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Remove the 4 clips and No. 2 EV battery intake duct.

  54. REMOVE NO. 4 HYBRID BATTERY INTAKE DUCT 
    1. GTY800007Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Remove the 4 clips and No. 4 hybrid battery intake duct.

  55. REMOVE CENTER ROOM PARTITION GARNISH ASSEMBLY (for Power Seat) 

    Refer to PROCEDURE - Step 20

  56. REMOVE NO. 1 SEAT RECLINING ADJUSTER ASSEMBLY LH (for Power Seat) 

    Refer to PROCEDURE - Step 21

  57. REMOVE NO. 1 SEAT RECLINING ADJUSTER ASSEMBLY RH (for Power Seat) 

    Refer to PROCEDURE - Step 22

  58. REMOVE CENTER NO. 2 FLOOR TO BRACE EXTENSION 
    1. Remove the 3 bolts and center No. 2 floor to brace extension.
      GTY807503Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  59. DISCONNECT FLOOR WIRE 
    WARNING:

    Wear insulated gloves.

    1. Detach the 2 claws and Remove the connector cover.
      GTY800004Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. GTY800005Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Disconnect the 2 connectors.

  60. REMOVE CENTER NO. 1 FLOOR TO BLACE EXTENSION 
    1. Remove the 3 bolts and center No. 1 floor to blace extension.
      GTY807508Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  61. REMOVE NO. 10 HV BATTERY SHIELD PANEL 
    WARNING:

    Wear insulated gloves.

    1. Using the service plug grip, remove the battery cover lock striker.

      HINT: 

      Insert the projection of the service plug grip and turn the button of the battery cover lock striker counterclockwise to release the lock.

      GTY808859Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Service Plug Grip
      *2 Battery Cover Lock Striker
      *a Projection
      *b Turn
      *c Button
    2. Remove the 2 nuts and No. 10 HV battery shield panel.
      GTY832709Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  62. DISCONNECT FLOOR UNDER WIRE 
    WARNING:

    Wear insulated gloves.

    1. Remove the nut and disconnect the 2 connectors.
      GTY800008Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  63. REMOVE NO. 4 HV BATTERY EXHAUST DUCT 
    WARNING:

    Wear insulated gloves.

    1. GTY800001Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Detach the 2 claws as shown in the illustration.

    2. Remove the No. 4 HV battery exhaust duct.
  64. REMOVE HV BATTERY ASSEMBLY 
    WARNING:

    Wear insulated gloves.

    1. Remove the 3 bolts, 2 nuts and HV battery assembly.
      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.
      • 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 80°.
      • Insulate the disconnected terminals or connectors with insulating tape.
      • If the HV battery has been struck or dropped, replace it.
      GTY800002Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE:

      Use cardboard or another similar material to protect the HV battery and vehicle body from damage.

      GTY835412Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  65. REMOVE HV BATTERY DUCT SUB-ASSEMBLY 
    WARNING:

    Wear insulated gloves.

    1. GTY793633Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Remove the clip and HV battery duct sub-assembly.

  66. REMOVE NO. 9 HV BATTERY SHIELD PANEL 
    WARNING:

    Wear insulated gloves.

    1. GTY793629Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Remove the 4 nuts and No. 9 HV battery shield panel.

  67. REMOVE HV BATTERY BRACKET LH 
    WARNING:

    Wear insulated gloves.

    1. GTY793628Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Remove the bolt, 2 nuts and HV battery bracket LH.

  68. REMOVE HV BATTERY BRACKET RH 

    HINT: 

    Use the same procedure described for the HV battery bracket LH.

  69. PERFORM RECOVERY INSPECTION 
    1. Before returning the HV battery, make sure to perform a recovery inspection.

      Refer to RECOVERY INSPECTION [10/2017 - ]

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