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Home >> Lexus >> 2021 >> LS 500h AWD >> Repair and Diagnosis >> Electrical >> Motors, Switches, Relays >> Sub Battery System - Service Information >> MULTI POWER CONTROL COMPUTER (w/ Front LiDAR Sensor) >> Removal [10/2023 - ] >> Procedure

Removal [10/2023 - ]: Procedure

  1. PRECAUTION 
    NOTE:
    • After the power switch is turned off, there may be a waiting time before disconnecting the negative (-) auxiliary battery terminal.

      Refer to BEFORE DISCONNECTING BATTERY [10/2023 - ]

    • If the multi power control ECU assembly is subjected to an impact, replace it with a new one.
    • If the multi power control ECU assembly was replaced, turn the power switch to ON and then off with the shift position in P and wait 3 seconds to perform ECU learning.
    • Refer to the table below for the combination of the multi power control ECU assembly and multi power control sub-battery.
      Parts Combination 1 Combination 2
      Letters on Multi Power Control ECU Label #A #B
      Letters on Multi Power Control Sub-battery Label #1 #2
    GTY1162344Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    *1 Multi Power Control ECU Assembly
    *2 Multi Power Control Sub-battery
    *a Label
  2. REMOVE LUGGAGE COMPARTMENT MAT SUB-ASSEMBLY 

    Refer to PROCEDURE - Step 25

  3. DISCONNECT CABLE FROM NEGATIVE AUXILIARY BATTERY TERMINAL 

    Refer to REMOVAL [10/2023 - ]

  4. REMOVE LUGGAGE COMPARTMENT FLOOR MAT 

    Refer to PROCEDURE - Step 24

  5. REMOVE TOOL BOX 

    Refer to PROCEDURE - Step 3

  6. REMOVE INNER LOWER LUGGAGE COMPARTMENT TRIM COVER 

    Refer to PROCEDURE - Step 29

  7. REMOVE LUGGAGE COMPARTMENT TRIM COVER RH 

    Refer to PROCEDURE - Step 27

  8. REMOVE ROPE HOOK ASSEMBLY 

    Refer to PROCEDURE - Step 10

  9. REMOVE REAR FLOOR FINISH PLATE 

    Refer to PROCEDURE - Step 11

  10. REMOVE FRONT LUGGAGE COMPARTMENT TRIM COVER 

    HINT: 

    Use the same procedure described for the front luggage compartment trim cover (w/o Advanced Drive).

    Refer to PROCEDURE - Step 30

  11. REMOVE NO. 1 LUGGAGE COMPARTMENT LIGHT ASSEMBLY 

    Refer to PROCEDURE - Step 1

  12. REMOVE REAR LUGGAGE COMPARTMENT TRIM COVER 

    HINT: 

    Use the same procedure described for the rear luggage compartment trim cover (w/o Advanced Drive).

    Refer to PROCEDURE - Step 33

  13. REMOVE SIDE TRIM BOX 

    Refer to PROCEDURE - Step 16

  14. REMOVE LUGGAGE COMPARTMENT TRIM COVER ASSEMBLY RH 

    Refer to PROCEDURE - Step 17

  15. REMOVE REAR LUGGAGE COMPARTMENT TRAY BRACKET RH 
    1. Detach the claw and open the cap.
      GTY1084601Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Remove in this Direction
    2. Remove the bolt and rope hook assembly.
      GTY1084915Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Detach the clip and remove the rear luggage compartment tray bracket RH.
      GTY1084701Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  16. REMOVE MULTI POWER CONTROL ECU ASSEMBLY 
    1. Disconnect the 6 connectors.
      GTY1084703Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. GTY1084702Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Disengage the clamp and disconnect the floor wire from the multi power control ECU assembly.

    3. Remove the 2 nuts and multi power control ECU assembly from the rear floor pan sub-assembly.
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