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Home >> Lexus >> 2019 >> UX 250h Base >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Collision/Avoidance >> Parking Assist Monitor System (Diagnostic Codes & Symptom Tests) >> Parking Assist Monitor System >> DTC U0126-87: Lost Communication with Steering Angle Sensor Module Missing Message; DTC U012987: Lost Communication with Brake System Control Module "A" Missing Message; DTC U014087: Lost Communication with Body Control Module Missing Message; DTC U016387: Lost Communication with Navigation Control Module Missing Message; DTC U029387: Lost Communication with Hybrid/EV Powertrain Control Module Missing Message [07/2022 - ] >> Procedure
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DTC U0126-87: Lost Communication with Steering Angle Sensor Module Missing Message; DTC U012987: Lost Communication with Brake System Control Module "A" Missing Message; DTC U014087: Lost Communication with Body Control Module Missing Message; DTC U016387: Lost Communication with Navigation Control Module Missing Message; DTC U029387: Lost Communication with Hybrid/EV Powertrain Control Module Missing Message [07/2022 - ]: Procedure

  1. CLEAR DTC 
    1. Clear the DTCs.

      Chassis > Rear Camera > Clear DTCs 

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  2

  2. CHECK FOR DTC 
    1. Check for DTCs.

      Chassis > Rear Camera > Trouble Codes 

      HINT: 

      • If CAN communication system DTCs are stored, they may also be stored in other systems.
      • If the CAN communication system has been inspected and repaired in other systems, the DTCs will not be output when rechecking for DTCs.
      • If these DTCs are output frequently, duplicate the conditions that cause the problem symptoms and perform the inspection again, even though the DTC was not output when rechecking for DTCs.

        Refer to PROBLEM SYMPTOMS TABLE [07/2022 - ]

      Result

      Result Proceed to
      DTCs are not output A
      DTCs are output B

    Result: 

    USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [10/2018 - ] 

    Result: 

    GO TO CAN COMMUNICATION SYSTEM 

    Refer to HOW TO PROCEED WITH TROUBLESHOOTING [10/2018 - ]