SUB BATTERY RELAY REMOVAL

CAUTION / NOTICE / HINT

The necessary procedures (adjustment, calibration, initialization or registration) that must be performed after parts are removed and installed, or replaced during backup relay removal/installation are shown below.

Necessary Procedure After Parts Removed/Installed/Replaced
Replacement Part or Procedure Necessary Procedure Effect/Inoperative Function when Necessary Procedure not Performed Link
Auxiliary battery terminal is disconnected/reconnected Memorize steering angle neutral point LKA/LDA system (for Mono camera type)

for Stereo Camera type:

Click here

forMono Camera type:

Click here

Lane control system (for Stereo camera type)
Parking support brake system*
Pre-collision system (for Mono camera type)
Pre-collision system (for Stereo camera type)
Adaptive high beam system

    Lighting system (EXT)

  • Cornering lights
Variable gear ratio steering system

Click here

Parking assist monitor system

Click here

Panoramic view monitor system

Click here

Initialize Rear Door Sunshade System Rear door sunshade system

Click here

Initialize power trunk lid system Power trunk lid system

Click here

*: When performing learning using the GTS.
Click here Click here

Note

After the power switch is turned off, the radio receiver assembly records various types of memory and settings. As a result, after turning the power switch off, be sure to wait for the time specified in the following table before disconnecting the cable from the negative (-) auxiliary battery terminal.

Waiting Time before Disconnecting Cable from Negative (-) Auxiliary Battery Terminal
System Name See Procedure
Vehicle enrolled in lexus enform system or safety connect system 6 minutes
Vehicle not enrolled in lexus enform system and safety connect system 1 minute

PROCEDURE


  1. REMOVE REAR COOLING UNIT ASSEMBLY (w/ Rear Cooler)

    Click here

  2. REMOVE LUGGAGE COMPARTMENT MAT SUB-ASSEMBLY

    Click here

  3. REMOVE TOOL BOX

    Click here

  4. PRECAUTION

    Note

    After turning the engine switch off, waiting time may be required before disconnecting the cable from the negative (-) battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) battery terminal notices before proceeding with work.

    Click here

  5. DISCONNECT CABLE FROM NEGATIVE AUXILIARY BATTERY TERMINAL

    Note

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

    Click here

  6. REMOVE AUXILIARY BATTERY

    Click here

  7. REMOVE LUGGAGE COMPARTMENT FLOOR MAT

    Click here

  8. REMOVE LUGGAGE COMPARTMENT TRIM COVER LH

    Click here

  9. REMOVE LUGGAGE COMPARTMENT TRIM COVER RH

    Click here

  10. REMOVE SIDE TRIM BOX

    Click here

  11. REMOVE ROPE HOOK ASSEMBLY

    Click here

  12. REMOVE REAR FLOOR FINISH PLATE

    Click here

  13. REMOVE INNER LOWER LUGGAGE COMPARTMENT TRIM COVER

    Click here

  14. REMOVE NO. 1 LUGGAGE COMPARTMENT LIGHT ASSEMBLY

    Click here

  15. REMOVE FRONT LUGGAGE COMPARTMENT TRIM COVER

    Click here

  16. REMOVE REAR LUGGAGE COMPARTMENT TRIM COVER

    Click here

  17. REMOVE LUGGAGE COMPARTMENT TRIM COVER ASSEMBLY RH

    Click here

  18. REMOVE LUGGAGE COMPARTMENT TRIM COVER ASSEMBLY LH

    Click here

  19. REMOVE REAR LUGGAGE COMPARTMENT TRAY BRACKET RH

    Click here

  20. REMOVE BATTERY CARRIER CATCH BRACKET SUB-ASSEMBLY


    1. B004SGD

      Remove the 4 nuts and the battery carrier catch bracket sub-assembly.

  21. REMOVE BATTERY CARRIER ASSEMBLY


    1. B004WQZ

      Remove the 6 bolts and battery carrier assembly.

  22. REMOVE CONNECTOR COVER

    Click here

  23. REMOVE LUGGAGE ROOM RELAY BLOCK


    1. Loosen the nut and disconnect the positive (+) terminal of the sub-battery from the sub-battery module assembly.

    2. B004S2X

      Remove the 2 bolts from the luggage room relay block.

    3. Detach the clamp and claw and disconnect the luggage room relay block.

    4. B004X0D

      Remove the relay block cover.

    5. B004X4S

      Lift up the lock lever and disconnect the connector as shown in the illustration.

    6. Detach the 3 clamps and disconnect the luggage room relay block harness from the luggage room panel.

    7. B004W3N

      Detach the 2 clamps and disconnect the luggage room relay block harness from the luggage room panel.

    8. w/ Dynamic Rear Steering:


      1. B004UAKC01
        *a Ground Wire Bolt
        *b Ground Wire

        Lift up the lock lever and disconnect the connector of the DRS control ECU as shown in the illustration.

      2. Remove the bolt and ground wire.

      3. Detach the 2 clamps and disconnect the luggage room relay block harness from the luggage room panel.

  24. REMOVE BACKUP RELAY


    1. B004XESC01
      *a Luggage Room Relay Block Lower Side

      Detach the clamp and disconnect the 3 tie wraps from the luggage room relay block.

    2. B004TMOC02
      *a Luggage Room Relay Block Lower Side

      Detach the 6 claws and remove the relay block lower cover from the luggage room relay block.

    3. B004VQ7C02
      *a Luggage Room Relay Block Upper Side

      Detach the 3 claws and disconnect the relay block assembly from the luggage room relay block.

    4. B004Y3ZC01
      *a Backup Relay Terminal Side

      Loosen the bolt and nut and remove them from the backup relay terminal.

    5. Loosen the 2 bolts and remove them from the backup relay.

    6. Disconnect the connector from the backup relay.

    7. Detach the claw and remove the backup relay from the relay block assembly.