LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Lexus >> 2019 >> UX 250h Base >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Anti-Theft Systems >> Smart Access System W/ Push-Button Start (Start Function) (Diagnostic Codes & Symptom Tests (1 Of 2)) (Hybrid) >> SMART ACCESS SYSTEM WITH PUSH-BUTTON START (for Start Function, HV Model) >> DTC B2781: Open / Short in Steering Lock ECU [10/2018 - 07/2022] >> Procedure
April 5, 2026: LEMON Manuals is launched! Read the announcement.

DTC B2781: Open / Short in Steering Lock ECU [10/2018 - 07/2022]: Procedure

  1. CHECK DTC 
    1. Using the Techstream, check if LIN communication DTC B2785 is output.

      Body Electrical > Smart Access > Trouble Codes 

      HINT: 

      If a LIN communication DTC is output, perform troubleshooting for the LIN communication system.

      Refer to HOW TO PROCEED WITH TROUBLESHOOTING [10/2018 - 07/2022]

      Result

      Result Proceed to
      DTC B2785 is output. A
      for Manual Tilt and Manual Telescopic Steering Column B
      for Power Tilt and Power Telescopic Steering Column C

    Result: 

    GO TO LIN COMMUNICATION SYSTEM (DTC B2785). Refer to  DTC B2785: Communication Malfunction between ECUs Connected by LIN [10/2018 - 07/2022] 

    Result: 

    REPLACE STEERING LOCK ECU (STEERING LOCK ACTUATOR OR UPPER BRACKET ASSEMBLY). Refer to  DISASSEMBLY [10/2018 - 07/2022] 

    Result: 

    REPLACE STEERING LOCK ECU (STEERING LOCK ACTUATOR OR UPPER BRACKET ASSEMBLY). Refer to  DISASSEMBLY [10/2018 - 07/2022]