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AUTOMATIC HIGH BEAM SYSTEM PROBLEM SYMPTOMS TABLE

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Note:

Before replacing the main body ECU (multiplex network body ECU), refer to Service Bulletin.

Tip:

Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.

Table 1. Automatic High Beam System
Symptom Suspected Area Link
Automatic high beam indicator on the combination meter assembly does not illuminate Check operating conditions Click here
Combination meter assembly

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Lane departure warning camera

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Main body ECU (Multiplex network body ECU) Click here
Automatic high beam system does not operate Check Data List (Auto H Beam STS) Click here
Automatic high beam switch circuit Click here
Headlight dimmer switch circuit Click here
Check automatic light control system operation Click here
Lane departure warning camera power source circuit

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Lane departure warning camera

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Main body ECU (Multiplex network body ECU) Click here
Tip:

  • Camera detection malfunctions can be detected using the GTS.

  • Aiming misalignment of the camera can be detected using the GTS. If the camera aiming is misaligned, check the following conditions:


    • Check if the vehicle is inclined.

    • Check if the windshield glass is installed correctly.

    • Check if the lane departure warning camera is installed correctly.

    • Check if there is deformation of the lane departure warning camera.