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Home >> Lexus >> 2024 >> RX 500h >> Repair and Diagnosis >> External Pages >> Different car >> Section 72 (Smart Access System (For Start) - Symptom Tests) >> SMART ACCESS SYSTEM WITH PUSH-BUTTON START (for Start Function, Gasoline Model) >> System Malfunction Message is Displayed on the Multi-information Display [10/2022 - ] >> Procedure

System Malfunction Message is Displayed on the Multi-information Display [10/2022 - ]: Procedure

WARNING: This page is about a different car, the 2025 Lexus RX 350, 2024 Lexus RX 350, and 2023 Lexus RX 350. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK FOR DTC 
    1. Check for DTCs.

      Body Electrical > Smart Access > Trouble Codes 

      Body Electrical > Power Source Control > Trouble Codes 

      Result

      Result Proceed to
      DTCs are not output A
      DTC is output. B

    Result: 

    GO TO SMART ACCESS SYSTEM WITH PUSH-BUTTON START (for Entry Function) (DIAGNOSTIC TROUBLE CODE CHART). Refer to  DIAGNOSTIC TROUBLE CODE CHART [10/2022 - ] 

    Result: 

    See step  2

  2. READ VALUE USING GTS (VEHICLE RUNNING CONDITION (LINE)) 
    1. Read the Data List according to the display on the GTS.

      Body Electrical > Power Source Control > Data List 

      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Vehicle Running Condition (Line) Vehicle being driven or stopped Stop or Running Stop: Vehicle stopped
      Running: Vehicle being driven at 5 km/h (3 mph) or more
      -

      Body Electrical > Power Source Control > Data List 

      Tester Display
      Vehicle Running Condition (Line)

      OK

      The GTS display changes correctly in response to the vehicle condition.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY). Refer to  REMOVAL [10/2022 - 08/2023]  , or refer to  REMOVAL [08/2023 - ] 

    Result: 

    NG 

    GO TO ELECTRONICALLY CONTROLLED BRAKE SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING). Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [10/2022 - ]