ENTRY AND START SYSTEM(for Start Function) PROBLEM SYMPTOMS TABLE

Tech Tips

If the problem occurs in certain locations or times of day, the possibility of wave interference is high.
If a malfunction occurred after optional components were installed by the dealer, check if there is wave interference from the components.

Entry and Start System (for Start Function)
Symptom	Suspected Area	Link
Power source mode does not change to on (IG) and on (ACC)	Entry and Start System (for Entry Function)	Click here
	Affected by Wave Interference
	Transmitter Battery
	Electrical Key Transmitter Sub-Assembly
	No. 1 Indoor Electrical Key Antenna Assembly (Front Floor)
	No. 2 Indoor Electrical Key Antenna Assembly (Rear Floor)
	Power switch
	Harness or Connector
	Driver Side Junction Block Assembly
	Certification ECU (Smart Key ECU Assembly)
Power source mode does not change to on (ACC)	Harness or Connector	Click here
	Relay ACC D Relay ACC P Relay LUG-ACC Relay
	Driver Side Junction Block Assembly
	Passenger Side Junction Block Assembly
	Certification ECU (Smart Key ECU Assembly)
Power source mode does not change to on (IG)	Harness or Connector	Click here
	Relay IG1 D NO.1 Relay IG1 D NO.2 Relay IG1 D NO.3 Relay IG2 D Relay IG1 P NO.1 Relay IG1 P NO.2 Relay IG1 P NO.3 Relay IG2 P Relay IG1 Relay IG2 NO.2 Relay LUG-IG1 NO.1 Relay LUG-IG1 NO.2 Relay
	Driver Side Junction Block Assembly
	Passenger Side Junction Block Assembly
	Certification ECU (Smart Key ECU Assembly)
Power Source Mode does not Change to ON (READY)	Hybrid Control System	Click here
	Immobiliser Function
	Steering Lock Function
	Harness or Connector
	Shift Control ECU
	Stop Light Switch Assembly
	Certification ECU (Smart Key ECU Assembly)
New key cannot be registered	Lin Communication System	Click here
	Meter / Gauge System
	Reregistration
	Electrical Key Transmitter Sub-Assembly
	Steering Lock ECU (Steering Lock Actuator or Upper Bracket Assembly)
	ID Code Box (Immobiliser Code ECU)
	Certification ECU (Smart Key ECU Assembly)
Additional key cannot be registered	Steering Lock Function	Click here
	Electrical Key Transmitter Sub-Assembly
	Certification ECU (Smart Key ECU Assembly)
New Key registration warning message is not displayed	Lighting System	Click here
	Meter / Gauge System
	Certification ECU (Smart Key ECU Assembly)
"Key Battery Low Replace Key Battery" is Displayed on the Multi-information Display	Transmitter Battery	Click here
Unable to Unlock Steering Wheel (Hybrid control system cannot Start)	Harness or Connector	Click here
	Steering Lock ECU (Steering Lock Actuator or Upper Bracket Assembly)
	ID Code Box (Immobiliser Code ECU)
	Certification ECU (Smart Key ECU Assembly)
Steering Lock does not Lock	Lighting System	Click here
	Harness or Connector
	Steering Lock ECU (Steering Lock Actuator or Upper Bracket Assembly)
	ID Code Box (Immobiliser Code ECU)
	Certification ECU (Smart Key ECU Assembly)
Security Indicator Light Does not Blink	Harness or Connector	Click here
	Security Indicator Light (Integration Control and Panel Assembly)
	Main Body ECU (Multiplex Network Body ECU)
	Certification ECU (Smart Key ECU Assembly)
Immobiliser System does not Operate Properly	Hybrid Control System	Click here
	Register ECU Communication ID
	Harness or Connector
	ID Code Box (Immobiliser Code ECU)
	Hybrid Vehicle Control ECU Assembly