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Home >> Lexus >> 2020 >> LC 500h >> Repair and Diagnosis (Single Page) >> Steering >> Manual Steering >> Dynamic Rear Steering System - Diagnostic Codes & Symptom Tests >> Dynamic Rear Steering System >> DTC C1B21/31: ECU Malfunction(CPU); DTC C1B22/32: ECU Malfunction(Internal Line); DTC C1B23/33: ECU Malfunction(Substrate Temperature Sensor); DTC C1B25/35: ECU Malfunction(Flash Memory) [01/2017 - 09/2018] >> Procedure

DTC C1B21/31: ECU Malfunction(CPU); DTC C1B22/32: ECU Malfunction(Internal Line); DTC C1B23/33: ECU Malfunction(Substrate Temperature Sensor); DTC C1B25/35: ECU Malfunction(Flash Memory) [01/2017 - 09/2018]: Procedure

  1. REPLACE DRS ECU (REAR STEERING CONTROL ECU) 
    1. Replace the DRS ECU (rear steering control ECU).

      Refer to REMOVAL [01/2017 - 05/2023]

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

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