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Home >> Lexus >> 2017 >> GS 450h Base >> Repair and Diagnosis >> Engine Mechanical >> Starter >> Smart Access System With Push-Button Start (For Entry Function) (Diagnostic Codes & Symptom Tests) >> SMART ACCESS SYSTEM WITH PUSH-BUTTON START(for Entry Function) >> Symptom Tests >> New Key cannot be Registered [09/2014 - ] >> Caution / Notice / Hint
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Caution / Notice / Hint

NOTE:
  • If registration of an electrical key transmitter sub-assembly is not possible, first confirm the procedure by engine immobilizer system.

    Refer to HOW TO PROCEED WITH TROUBLESHOOTING [09/2014 - ]

  • A new registration mode can be entered only when no electrical key transmitter sub-assemblies are stored in the certification ECU (smart key ECU assembly).
  • The smart access system with push-button start (for Entry Function) uses a multiplex communication system (LIN communication system) and the 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 [09/2014 - ]

  • When using the Techstream with the power switch off to troubleshoot: Connect the Techstream to the DLC3 and turn a courtesy light switch on and off at 1.5-second intervals until communication between the Techstream and vehicle begins.
  • Before replacing the electrical key transmitter sub-assembly, certification ECU (smart key ECU assembly), steering lock ECU (steering lock actuator assembly), refer to the smart access system with push-button start (for Entry Function).

    Refer to PRECAUTION [09/2014 - ]

  • Inspect the fuses for circuits related to this system before performing the following inspection procedure.