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Home >> Lexus >> 2021 >> NX 300h Base >> Repair and Diagnosis >> Body & Frame >> Door Locks >> Smart Access System With Push-Button Start (For Start Function) - Diagnostic Codes & Symptom Tests >> SMART ACCESS SYSTEM WITH PUSH-BUTTON START (for Start Function) >> DTC U0140: Lost Communication with Main Body ECU; DTC U0142: Lost Communication with Main Body ECU; DTC U0155: Lost Communication with Combination Meter; DTC U0293: Lost Communication with Hybrid Vehicle Control System; DTC U1117: Lost Communication with Accessory Gateway [10/2014 - ] >> Procedure
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DTC U0140: Lost Communication with Main Body ECU; DTC U0142: Lost Communication with Main Body ECU; DTC U0155: Lost Communication with Combination Meter; DTC U0293: Lost Communication with Hybrid Vehicle Control System; DTC U1117: Lost Communication with Accessory Gateway [10/2014 - ]: Procedure

  1. CHECK FOR DTC 
    1. Note any DTCs that are output.

      Refer to HOW TO PROCEED WITH TROUBLESHOOTING [10/2014 - ]

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    GO TO CAN COMMUNICATION SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING). Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [10/2014 - 09/2017]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [09/2017 - 05/2019]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [05/2019 - ] 

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