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Home >> Lexus >> 2018 >> LS 500h RWD >> Repair and Diagnosis (Single Page) >> Steering >> Power Steering >> Variable Gear Ratio Steering System - Diagnostic Codes & Symptom Tests >> Variable Gear Ratio Steering System >> DTC C15B1: ECU Malfunction (CPU); DTC C15B3: ECU Malfunction (Substrate Temperature Sensor); DTC C15B5: ECU Malfunction (Flash Memory); DTC C15B6: ECU Malfunction (EEPROM) [10/2017 - 10/2020] >> Procedure
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DTC C15B1: ECU Malfunction (CPU); DTC C15B3: ECU Malfunction (Substrate Temperature Sensor); DTC C15B5: ECU Malfunction (Flash Memory); DTC C15B6: ECU Malfunction (EEPROM) [10/2017 - 10/2020]: Procedure

  1. REPLACE VGRS ECU (FRONT STEERING CONTROL ECU) 
    1. Replace the VGRS ECU (front steering control ECU).

      Refer to REMOVAL [10/2017 - 09/2018] , or refer to REMOVAL [09/2018 - 10/2020]

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

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