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Home >> Lexus >> 2017 >> LX 570 >> 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) [08/2020 - ] >> Procedure

DTC C15B1: ECU Malfunction (CPU); DTC C15B3: ECU Malfunction (Substrate Temperature Sensor); DTC C15B5: ECU Malfunction (Flash Memory); DTC C15B6: ECU Malfunction (EEPROM) [08/2020 - ]: Procedure

  1. REPLACE VGRS ECU (STEERING CONTROL ECU) 
    1. Replace the VGRS ECU (steering control ECU). Refer to REMOVAL [09/2015 - ] .

    Result: 

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