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DTC C1C6D-49: Advanced Drive Control Module Internal Electronic Failure [11/2021 - ]: Procedure

WARNING: This page is about a different car, the 2024 Lexus LS 500h, 2023 Lexus LS 500h, and 2022 Lexus LS 500h. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK DTC 
    1. Clear DTCs.

      Chassis > Advanced Drive eXtension Control > Clear DTCs 

    2. Wait at least 5 minutes.
    3. Check for DTCs.

      Chassis > Advanced Drive eXtension Control > Trouble Codes 

      Result

      Result Proceed to
      DTCs are not output A
      DTC C1C6D-49 is output B

    Result: 

    USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [11/2021 - 10/2022]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [10/2022 - 10/2023]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [10/2023 - ] 

    Result: 

    REPLACE ADVANCED DRIVE ECU ASSEMBLY. Refer to  REMOVAL [11/2021 - 10/2022]  , or refer to  REMOVAL [10/2022 - 10/2023]  , or refer to  REMOVAL [10/2023 - ]