DSD Information System
Home >> Toyota >> 2021 >> Highlander LE, 4WD >> Repair and Diagnosis >> Accessories & Equipment >> Exterior Lights >> Lighting System (W/ AFS) - Diagnostic Codes (1 Of 2) >> LIGHTING SYSTEM (w/ AFS) >> DTC B2456: Left Headlight ECU Variation Error [10/2022 - 11/2023] >> Caution / Notice / Hint

Caution / Notice / Hint

NOTE:
  • Before replacing the main body ECU (multiplex network body ECU), refer to Registration.

    for HV Model: Refer to REGISTRATION [10/2021 - 11/2023]

    for Gasoline Model: Refer to REGISTRATION [10/2022 - 11/2023]

  • Before replacing the hybrid vehicle control ECU, refer to Registration. (for HV Model)

    Refer to REGISTRATION [10/2021 - 11/2023]

  • Before replacing the ECM, refer to Registration. (for Gasoline Model)

    Refer to REGISTRATION [10/2022 - 11/2023]

  • If the headlight ECU sub-assembly LH or headlight assembly LH has been replaced, it is necessary to synchronize the vehicle information and initialize the headlight ECU sub-assembly LH.

    Refer to INITIALIZATION [12/2019 - 11/2023]

  • When replacing the headlight ECU sub-assembly LH or headlight assembly LH, always replace it with a new one. If a headlight ECU sub-assembly LH which was installed to another vehicle is used, the information stored in it will not match the information from the vehicle and a DTC may be stored.