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Home >> Lexus >> 2021 >> ES 350 Luxury >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Drivers Assistance Systems - ADAS >> Parking Support Alert System (Except Hybrid) - Diagnostic Codes & Symptom Tests >> PARKING SUPPORT ALERT SYSTEM (for Gasoline Model) >> DTC C1AE4: Front Right Sensor Malfunction [06/2018 - 09/2022] >> Procedure

DTC C1AE4: Front Right Sensor Malfunction [06/2018 - 09/2022]: Procedure

  1. CHECK DTC OUTPUT 
    1. Check for DTCs.

      Body Electrical > Advanced Parking Guidance/ICS/Intuitive P/A > Trouble Codes 

      Result

      Result Proceed to
      Only DTC C1AE4 is output A
      DTC C1AE4 and C1AEC are output B
      No DTCs are output C

    Result: 

    GO TO DTC (C1AEC). Refer to  DTC C1AEC: Front Sensor Communication Malfunction [06/2018 - 09/2022]  

    Result: 

    USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [06/2018 - ] 

    Result: 

    See step  2

  2. REPLACE FRONT CORNER ULTRASONIC SENSOR RH 
    1. Replace the front corner ultrasonic sensor RH with new or a known good one.

      Refer to REMOVAL [06/2018 - 08/2021] , or refer to REMOVAL [08/2021 - 09/2022]

      HINT: 

      All of the sensors are interchangeable. To confirm whether a sensor is functioning normally, switch it with a known good sensor from the other end of the vehicle.

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  3

  3. CHECK DTC OUTPUT 
    1. Clear the DTCs.

      Body Electrical > Advanced Parking Guidance/ICS/Intuitive P/A > Clear DTCs 

    2. Check for DTCs.

      Body Electrical > Advanced Parking Guidance/ICS/Intuitive P/A > Trouble Codes 

      Result

      Result Proceed to
      DTC C1AE4 is output A
      No DTCs are output B

    Result: 

    REPLACE CLEARANCE WARNING ECU ASSEMBLY. Refer to  REMOVAL [06/2018 - 08/2021]  , or refer to  REMOVAL [08/2021 - 09/2022] 

    Result: 

    END (FRONT RIGHT CORNER SENSOR WAS DEFECTIVE)