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Home >> Lexus >> 2021 >> UX 200 Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 66 (Smart Access System W/ Push-Button Start (Entry Function) (Diagnostic Codes & Symptom Tests) (Hybrid)) >> SMART ACCESS SYSTEM WITH PUSH-BUTTON START (for Entry Function, HV Model) >> DTC B27A2: Open in Front Passenger Side Electrical Antenna Circuit [10/2018 - ] >> Caution / Notice / Hint

Caution / Notice / Hint

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2024 Lexus UX 250h, 2023 Lexus UX 250h, 2022 Lexus UX 250h, 2021 Lexus UX 250h, and 2020 Lexus UX 250h. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
  • The smart access system with push-button start (for Entry Function) uses the LIN communication system and CAN communication system. Inspect the communication function by following How to Proceed with Troubleshooting. Troubleshoot the smart access system with push-button start (for Entry Function) after confirming that the communication systems are functioning properly.

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

  • When using the Techstream with the power switch off, connect the Techstream to the DLC3 and turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the Techstream and the vehicle begins. Then select the vehicle type under manual mode and enter the following menus: Body Electrical / Smart Access. While using the Techstream, periodically turn a courtesy light switch on and off at intervals of 1.5 seconds or less to maintain communication between the Techstream and the vehicle.
  • Before replacing the certification ECU (smart key ECU assembly), refer to Precaution.

    Refer to PRECAUTION [10/2018 - 10/2019] , or refer to PRECAUTION [10/2019 - 10/2020] , or refer to PRECAUTION [10/2020 - 08/2021] , or refer to PRECAUTION [08/2021 - ]

  • After repair, confirm that no DTCs are output by performing "DTC Output Confirmation Operation".
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