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DTC U0418-81: Invalid Data Received from Brake System Control Module Invalid Serial Data Received [05/2023 - ]: Procedure

WARNING: This page is about a different car, the 2024 Lexus LC 500h. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK ELECTRONICALLY CONTROLLED BRAKE SYSTEM 
    1. Check for DTCs.

      Chassis > ABS/VSC/TRAC > Trouble Codes 

      HINT: 

      If U0418-81 is output in the pre-collision system, electronically controlled brake system DTCs may also have been output. Check the electronically controlled brake system first.

      Result

      Result Proceed to
      Electronically controlled brake system DTC are not output A
      Electronically controlled brake system DTC are output B

    Result: 

    REPLACE FORWARD RECOGNITION CAMERA. Refer to  REMOVAL [05/2023 - ] 

    Result: 

    GO TO ELECTRONICALLY CONTROLLED BRAKE SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [09/2018 - ]