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Home >> Lexus >> 2020 >> LS 500h AWD >> Repair and Diagnosis >> Electrical >> Motors, Switches, Relays >> Sub Battery System - Service Information >> Sub Battery Relay >> Installation [10/2020 - 10/2023] >> Procedure

Installation [10/2020 - 10/2023]: Procedure

  1. INSTALL BACKUP RELAY 
    1. Attach the claw and install the backup relay to the relay block assembly.
    2. Connect the connector to the backup relay.
    3. Install the backup relay to the relay block assembly with the 2 bolts.

      Torque: 5.4 N.m (55 kgf/cm, 48 in.lbf) 

    4. Install the bolt and nut to the backup relay terminal.

      Torque: 5.4 N.m (55 kgf/cm, 48 in.lbf) 

    5. Attach the 3 claws and connect the relay block assembly to the luggage room relay block (luggage room relay block upper side).
    6. Attach the 6 claws and install the relay block lower cover to the luggage room relay block (luggage room relay block lower side).
    7. Attach the clamp and connect the 3 tie wraps the luggage room relay block (luggage room relay block lower side).
  2. INSTALL LUGGAGE ROOM RELAY BLOCK 
    1. w/ Dynamic Rear Steering:
      1. Pull down the lock lever and connect the connector of the DRS control ECU as shown in the illustration.
        GTY778832Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *a Ground Wire Bolt
        *b Ground Wire
      2. Install the ground wire with the bolt.

        Torque: 10 N.m (102 kgf/cm, 7 ft.lbf) 

      3. Attach the 2 clamps and connect the luggage room relay block harness to the luggage room panel.
    2. Attach the 2 clamps and connect the luggage room relay block harness to the luggage room panel.
    3. Pull down the lock lever and connect the connector as shown in the illustration.
      GTY810853Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Attach the 3 clamps and connect the luggage room relay harness to the luggage room panel.
    5. Install the relay block cover.
    6. Attach the clamp and claw to the luggage room relay block.
    7. Install the luggage room relay block with the 2 bolts.

      Torque: 8.0 N.m (82 kgf/cm, 71 in.lbf) 

    8. Connect the positive (+) sub-battery terminal to the sub-battery module assembly with the nut.

      Torque: 8.7 N.m (89 kgf/cm, 77 in.lbf) 

  3. INSTALL CONNECTOR COVER 

    See step  3

  4. INSTALL BATTERY CARRIER ASSEMBLY 
    1. Install the battery carrier assembly to the luggage room panel with the 6 bolts.

      Torque: 19.5 N.m (199 kgf/cm, 14 ft.lbf) 

  5. INSTALL BATTERY CARRIER CATCH BRACKET SUB-ASSEMBLY 
    1. Install the battery carrier catch bracket sub-assembly to the luggage room panel with the 4 nuts.

      Torque: 8.5 N.m (87 kgf/cm, 75 in.lbf) 

  6. INSTALL REAR LUGGAGE COMPARTMENT TRAY BRACKET RH 

    See step  4

  7. INSTALL LUGGAGE COMPARTMENT TRIM COVER ASSEMBLY LH 

    Refer to PROCEDURE - Step 2 [10/2020 - 11/2021] , or refer to PROCEDURE - Step 2 [11/2021 - 10/2023]

  8. INSTALL LUGGAGE COMPARTMENT TRIM COVER ASSEMBLY RH 

    Refer to PROCEDURE - Step 2 [10/2020 - 11/2021] , or refer to PROCEDURE - Step 2 [11/2021 - 10/2023]

  9. INSTALL REAR LUGGAGE COMPARTMENT TRIM COVER 

    Refer to PROCEDURE - Step 4 [10/2020 - 11/2021] , or refer to PROCEDURE - Step 4 [11/2021 - 10/2023]

  10. INSTALL FRONT LUGGAGE COMPARTMENT TRIM COVER 

    Refer to PROCEDURE - Step 7 [10/2020 - 11/2021] , or refer to PROCEDURE - Step 7 [11/2021 - 10/2023]

  11. INSTALL NO. 1 LUGGAGE COMPARTMENT LIGHT ASSEMBLY 

    Refer to PROCEDURE - Step 1

  12. INSTALL INNER LOWER LUGGAGE COMPARTMENT TRIM COVER 

    Refer to PROCEDURE - Step 9 [10/2020 - 11/2021] , or refer to PROCEDURE - Step 9 [11/2021 - 10/2023]

  13. INSTALL REAR FLOOR FINISH PLATE 

    Refer to PROCEDURE - Step 2 [10/2020 - 11/2021] , or refer to PROCEDURE - Step 2 [11/2021 - ]

  14. INSTALL ROPE HOOK ASSEMBLY 

    Refer to PROCEDURE - Step 3 [10/2020 - 11/2021] , or refer to PROCEDURE - Step 3 [11/2021 - ]

  15. INSTALL SIDE TRIM BOX 

    Refer to PROCEDURE - Step 3 [10/2020 - 11/2021] , or refer to PROCEDURE - Step 3 [11/2021 - 10/2023]

  16. INSTALL LUGGAGE COMPARTMENT TRIM COVER RH 

    Refer to PROCEDURE - Step 12 [10/2020 - 11/2021] , or refer to PROCEDURE - Step 12 [11/2021 - 10/2023]

  17. INSTALL LUGGAGE COMPARTMENT TRIM COVER LH 

    Refer to PROCEDURE - Step 11 [10/2020 - 11/2021] , or refer to PROCEDURE - Step 11 [11/2021 - 10/2023]

  18. INSTALL LUGGAGE COMPARTMENT FLOOR MAT 

    Refer to PROCEDURE - Step 14 [10/2020 - 11/2021] , or refer to PROCEDURE - Step 14 [11/2021 - 10/2023]

  19. INSTALL AUXILIARY BATTERY 

    Refer to INSTALLATION [10/2020 - 10/2023]

  20. INITIALIZATION AFTER RECONNECTING AUXILIARY BATTERY TERMINAL 

    Refer to WORK PROCEDURE [10/2020 - 11/2021] , or refer to WORK PROCEDURE [11/2021 - 10/2022] , or refer to WORK PROCEDURE [10/2022 - ]

    HINT: 

    When disconnecting and reconnecting the battery, there is an automatic learning function that completes learning when the respective system is used.

    Refer to AUTOMATIC LEARNING CHART [10/2020 - 11/2021] , or refer to AUTOMATIC LEARNING CHART [11/2021 - 10/2023]

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