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Home >> Toyota >> 2021 >> Highlander LE, 4WD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 129 (Smart Key System (For Start, HV) - Symptom Tests (2 Of 2)) >> SMART KEY SYSTEM (for Start Function, HV Model) >> New Key cannot be Registered [10/2021 - 10/2022] >> Caution / Notice / Hint

Caution / Notice / Hint

WARNING: This page is about a different variant/trim than selected.
NOTE:
  • New registration mode can be entered only when no electrical key transmitter sub-assemblies are stored in the certification ECU (smart key ECU assembly).
  • When using the GTS with the ignition switch off, connect the GTS to the DLC3 and turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the GTS and the vehicle begins. Then select the vehicle type under manual mode and enter the following menus: Body Electrical / Smart Key. While using the GTS, periodically turn a courtesy light switch on and off at intervals of 1.5 seconds or less to maintain communication between the GTS and the vehicle.
  • The smart key system (for Start Function) uses the LIN communication system and CAN communication system. Inspect the communication function by following How to Proceed with Troubleshooting. Troubleshoot the smart key system (for Start Function) after confirming that the communication systems are functioning properly.

    Refer to HOW TO PROCEED WITH TROUBLESHOOTING [10/2021 - 11/2023]

  • Before replacing the electrical key transmitter sub-assembly, certification ECU (smart key ECU assembly) or ID code box (immobilizer code ECU), refer to Registration.

    Refer to REGISTRATION [10/2021 - 11/2023]

  • Inspect the fuses for circuits related to this system before performing the following procedure.
  • After repair, confirm that no DTCs are output.
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