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Home >> Lexus >> 2018 >> ES 350 >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Anti-Theft Systems >> Smart Access System (For Entry Function) (Diagnostic Codes & Symptom Tests) >> Smart Access System With Push-Button Start (For Entry Function) >> Driver Side Door Entry Lock and Unlock Functions do not Operate (07/2015 -) >> Caution / Notice / Hint
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Caution / Notice / Hint

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 (Refer to HOW TO PROCEED WITH TROUBLESHOOTING (07/2015 -) ). Troubleshoot the smart access system with push-button start (for Entry Function) after confirming that the communication systems are functioning properly.
  • When using the Techstream with the vehicle engine switch off, connect the Techstream to the vehicle 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.
  • Check that there are no electrical key transmitter sub-assemblies in the vehicle.
  • Before performing the inspection, check that DTC B1242 (wireless door lock control) is not output (Refer to DTC B1242: Wireless Door Lock Tuner Circuit Malfunction (07/2015 -) ).
  • Before replacing the certification ECU (smart key ECU assembly), refer to smart access system with push-button start (for Entry Function) Precaution (Refer to PRECAUTION (07/2015 -) ).
  • After repair, confirm that no DTCs are output by performing "DTC Output Confirmation Operation".
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