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Home >> Lexus >> 2021 >> LS 500 Base, AWD >> Repair and Diagnosis (Single Page) >> Steering >> Manual 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) [12/2017 - 10/2023] >> Procedure

DTC C15B1: ECU Malfunction(CPU); DTC C15B3: ECU Malfunction(Substrate Temperature Sensor); DTC C15B5: ECU Malfunction(Flash Memory); DTC C15B6: ECU Malfunction(EEPROM) [12/2017 - 10/2023]: Procedure

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

      Refer to REMOVAL [12/2017 - 09/2018] , or refer to REMOVAL [09/2018 - 10/2020] , or refer to REMOVAL [10/2020 - 10/2022] , or refer to REMOVAL [10/2022 - 10/2023]

      Result

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    Result: 

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