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Home >> Lexus >> 2021 >> LS 500 Base, RWD >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Drivers Assistance Systems - ADAS >> Automatic High Beam System - Diagnostic Codes & Symptom Tests >> Automatic High Beam System >> Automatic High Beam System does not Operate or Operation Indicator does not Illuminate [10/2020 - 11/2021] >> Caution / Notice / Hint

Caution / Notice / Hint

NOTE:
  • First, confirm that there is no malfunction in the front radar sensor system.
  • Before replacing the main body ECU (multiplex network body ECU), refer to Registration.

    Refer to REGISTRATION [10/2020 - 10/2022]

  • When replacing the combination meter assembly, always replace it with a new one. If a combination meter assembly 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.
  • Before troubleshooting, make sure that the low beam headlights and high beam headlights operate normally.
  • If the windshield glass is dirty, fogged up or has an oily film, the forward recognition camera may not operate properly, affecting the operation of systems that use the forward recognition camera.
  • for Stereo Camera Type:

    When replacing the object recognition camera, always replace it with a new one. If an object recognition camera which was installed to another vehicle is used, the information stored in the object recognition camera will not match the information from the vehicle. As a result, a DTC may be stored.

  • for Stereo Camera Type:

    When the object recognition camera is replaced with a new one, make sure to perform beam axis adjustment for the object recognition camera and clear the vehicle control history for each system.

    HINT: 

    Object recognition camera adjustment can be performed by using either One Time Recognition or Sequential Recognition. When clearing vehicle control history, refer to the following links:

    for Sequential Recognition:

    Refer to ADJUSTMENT (SEQUENTIAL RECOGNITION) [10/2020 - 10/2023]

    for One Time Recognition:

    Refer to ADJUSTMENT (ONE TIME RECOGNITION) [10/2020 - 10/2023]

  • for Mono Camera Type:

    When replacing the forward recognition camera, always replace it with a new one. If a forward recognition camera which was installed to another vehicle is used, the information stored in the forward recognition camera will not match the information from the vehicle. As a result, a DTC may be stored.

  • for Mono Camera Type:

    When the forward recognition camera is replaced with a new one, make sure to perform beam axis adjustment for the forward recognition camera and clear the vehicle control history for each system.

    HINT: 

    Forward recognition camera adjustment can be performed by using either One Time Recognition or Sequential Recognition. When clearing vehicle control history, refer to the following links:

    for Sequential Recognition:

    Refer to ADJUSTMENT (SEQUENTIAL RECOGNITION) [10/2020 - 11/2021]

    for One Time Recognition:

    Refer to ADJUSTMENT (ONE TIME RECOGNITION) [10/2020 - 11/2021]

    for Driving Adjustment:

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