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Diagnosis System [10/2023 - ]

WARNING: This page is about a different car, the 2024 Lexus LS 500h. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK DLC3 
    1. Check the DLC3.

      Refer to GENERAL INFORMATION [09/2018 - ]

  2. FUNCTION OF PASSENGER AIRBAG ON/OFF INDICATOR 
    1. Initial check
      1. Turn the power switch on (IG).
      2. The passenger airbag ON/OFF indicator comes on for approximately 4 seconds, then goes off for approximately 2 seconds.
      3. Approximately 6 seconds after the power switch is turned on (IG), the passenger airbag ON/OFF indicator will indicate ON/OFF depending on the following conditions.
        INDICATOR OPERATION

        Front Passenger Seat Condition Passenger Airbag ON/OFF Indicator SRS Warning Light
        ON Indicator OFF Indicator
        Vacant Off On Off
        Adult*1 is seated On Off Off
        Child*2 is seated On or Off*2 Off or On*2 Off
        Child restraint system is installed Off On Off
        Occupant classification system failure Off On On
        1. *1: The system judges a person of average adult weight or more as an adult. If a smaller adult sits in the front passenger seat, the system may not recognize them as an adult depending on their physique and posture.
        2. *2: The system may not recognize a child or a child in a child restraint system as a child depending on factors such as the positioning of the child restraint system or the child's physique or posture.

        HINT: 

        • The passenger airbag ON/OFF indicator illuminates based on the following timing chart in order to check the indicator light circuit.
        • When the occupant classification system has a malfunction, both the SRS warning light and passenger airbag ON/OFF indicator ("OFF") come on. In this case, check for airbag system DTCs first.
        GTY818558Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  3. PASSENGER AIRBAG ON/OFF INDICATOR CHECK 
    1. Turn the power switch on (IG).
      GTY800177Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *A Type A
      *B Type B
    2. Check that the passenger airbag ON/OFF indicator ("ON" and "OFF") comes on for approximately 4 seconds, then goes off for approximately 2 seconds.

      HINT: 

      Refer to the indicator operation table in Function of Passenger Airbag ON/OFF Indicator for the passenger airbag ON/OFF indicator operation when the power switch is turned on (IG) and elapses approximately for 6 seconds.