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Home >> Toyota >> 2020 >> RAV4 XLE, AWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 11 (Hybrid Battery Control System - Service Information (4 Of 7)) >> BATTERY ECU (for LITHIUM-ION BATTERY) >> Removal [08/2020 - 12/2021] >> Caution / Notice / Hint

Caution / Notice / Hint

WARNING: This page is about a different variant/trim than selected.

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

NECESSARY PROCEDURES AFTER PARTS REMOVED/INSTALLED/REPLACED

Replaced Part or Performed Procedure Necessary Procedures Effect/Inoperative Function when Necessary Procedure not Performed Link
Auxiliary battery terminal is disconnected/reconnected Perform steering sensor zero point calibration Lane control system Refer to INITIALIZATION [11/2018 - 12/2021]
Parking support brake system*
Pre-collision system
Lighting system (EXT) (w/ AFS)
Memorize steering angle neutral point Parking assist monitor system Refer to INITIALIZATION [11/2018 - 10/2022]
Panoramic view monitor system Refer to INITIALIZATION [11/2018 - 10/2022]
Reset back door close position Power back door system Refer to INITIALIZATION [11/2018 - 10/2023]
Power back door initialization Power door lock control system Refer to INITIALIZATION [11/2018 - ]
Replacement of battery ECU assembly Current sensor offset learning DTCs are stored Refer to PROCEDURE - Step 14

*: When performing learning using the Techstream.

WARNING:
  • Orange wire harnesses and connectors indicate high-voltage circuits. To prevent electric shock, always follow the procedure described in the appropriate service information .
    GTY588409Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    Refer to PRECAUTION [06/2020 - ]

  • To prevent electric shock, wear insulated gloves when working on wire harnesses and components of the high voltage system.
    GTY588386Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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 [11/2018 - ]

  • The type of battery ECU assembly to be used varies depending on the vehicle model.
  • The type of battery ECU assembly can be confirmed by the color of the label.
    GTY756930Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    *a Black Label
  • If the wrong type of battery ECU assembly is installed, the power switch cannot be turned on (READY).
  • After installing the battery ECU assembly, perform the following to check that the power switch can be turned on (READY).
    • Turn the power switch on (READY).
    • Turn the power switch off and wait for 30 seconds or more.
    • Turn the power switch on (READY) again.