If the engine switch is pressed with the electrical key transmitter sub-assembly in the cabin, the certification ECU (smart key ECU assembly) receives a signal and changes the power source mode.

Click hereVehicle Interior>THEFT DETERRENT / KEYLESS ENTRY>SMART ENTRY AND START SYSTEM(for Start Function)>Power Source Mode does not Change to ON (IG and ACC)

NOTICE:

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When using the GTS with the engine 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 Model Code "KEY REGIST" under manual mode and enter the following menus: Body Electrical / Entry&Start(CAN). 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.

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The smart entry and start 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 entry and start system (for Start Function) after confirming that the communication systems are functioning properly.

Click hereVehicle Interior>THEFT DETERRENT / KEYLESS ENTRY>SMART ENTRY AND START SYSTEM(for Start Function)>HOW TO PROCEED WITH TROUBLESHOOTING

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Make sure that no DTCs are output. If any DTCs are output, proceed to the Diagnostic Trouble Code Chart.

Click hereVehicle Interior>THEFT DETERRENT / KEYLESS ENTRY>SMART ENTRY AND START SYSTEM(for Start Function)>DIAGNOSTIC TROUBLE CODE CHART

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If the smart entry and start system is disabled through the customize function, enable the system before performing troubleshooting.

Click hereVehicle Interior>THEFT DETERRENT / KEYLESS ENTRY>SMART ENTRY AND START SYSTEM(for Start Function)>CUSTOMIZE PARAMETERS

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Before replacing the certification ECU (smart key ECU assembly), refer to smart entry and start system (for Start Function) Precaution.

Click hereVehicle Interior>THEFT DETERRENT / KEYLESS ENTRY>SMART ENTRY AND START SYSTEM(for Start Function)>PRECAUTION

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

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After completing repairs, confirm that the problem does not occur.

HINT:

When the cable is disconnected and reconnected to the negative (-) battery terminal, the power source mode returns to the state it was in before the cable was disconnected.