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Fail-Safe Chart [03/2019 - ]

WARNING: This page is about a different car, the 2024 Lexus RC F, 2023 Lexus RC F, 2022 Lexus RC F, 2021 Lexus RC F, and 2020 Lexus RC F. However, it is still accessible from the selected car via links, so may be relevant.
  1. FAIL-SAFE FUNCTION 
    1. Headlight ECU sub-assembly
      1. The headlight ECU sub-assembly stops light operation if any of the following malfunctions are detected.
        Malfunction Multi-information Display Warning DTC Output
        Lighting on/off LED light source malfunction Low beam/High beam Displayed Output
        Fan malfunction* Displayed Output
        Other than above (communication with main body ECU (multiplex network body ECU)) Not displayed Output
        Automatic headlight beam level control Displayed Output
        Power supply IG voltage line malfunction Displayed Output
        Other than an IG voltage line malfunction Not displayed Not output
        1. *: for Triple Beam Headlight
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