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Home >> Lexus >> 2019 >> UX 250h Base >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Warning Systems >> Vehicle Proximity Notification System (Diagnostic Codes & Symptom Tests) >> Vehicle Proximity Notification System >> DTC U0129: Lost Communication with Brake System Control Module; DTC U0140: Lost Communication with Body Control Module; DTC U0293: Lost Communication with Hybrid/EV Powertrain Control Module [10/2019 - 08/2021] >> Procedure
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DTC U0129: Lost Communication with Brake System Control Module; DTC U0140: Lost Communication with Body Control Module; DTC U0293: Lost Communication with Hybrid/EV Powertrain Control Module [10/2019 - 08/2021]: Procedure

  1. CHECK FOR DTC 
    1. Connect the Techstream to the DLC3.
    2. Turn the power switch on (IG).
    3. Turn the Techstream on.
    4. Enter the following menus: Body Electrical / Vehicle Proximity Notification System / Trouble Codes.
    5. Check for DTCs.

      Body Electrical > Vehicle Proximity Notification System > Trouble Codes 

      HINT: 

      When DTCs indicating a CAN communication system malfunction are output, perform troubleshooting for the CAN communication system before the vehicle proximity notification system.

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    GO TO CAN COMMUNICATION SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [10/2018 - ]