SMART ENTRY AND START SYSTEM (for Entry Function) PROBLEM SYMPTOMS TABLE

Tech Tips


  • If a problem occurs in certain locations or at certain times of day, check for the possibility of wave interference.

  • When the electrical key transmitter sub-assembly is brought near the door control receiver (RF band), door outside handle (LF band), indoor electrical key antenna (LF band) or any of the electrical key antennas (LF band), the possibility of wave interference decreases. By doing this, whether wave interference is causing the problem can be checked.

  • Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.

  • Inspect the fuses and relays related to this system before inspecting the suspected areas below.

Smart Entry and Start System (for Entry Function)
Symptom Suspected Area See page
Entry Interior Alarm does not Sound Meter/gauge system

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Certification ECU (smart key ECU assembly) -
All Door Entry Lock/Unlock Functions and Wireless Functions do not Operate Power door lock control system

Click here

Electrical key transmitter sub-assembly -
Transmitter battery -
Door control receiver -
Certification ECU (smart key ECU assembly) -
Harness or connector -
All Door Entry Lock/Unlock Functions do not Operate, but Wireless Functions Operate Electrical key transmitter sub-assembly

Click here

Certification ECU (smart key ECU assembly) -
Driver Door Entry Unlock Function does not Operate Power door lock control system

Click here

Front door outside handle assembly (for driver door) -
Certification ECU (smart key ECU assembly) -
Harness or connector -
Front Passenger Door Entry Unlock Function does not Operate Power door lock control system

Click here

Front door outside handle assembly (for front passenger door) -
Certification ECU (smart key ECU assembly) -
Harness or connector -
Rear Door LH Entry Unlock Function does not Operate Power door lock control system

Click here

Rear door outside handle assembly (for rear door LH) -
Certification ECU (smart key ECU assembly) -
Harness or connector -
Rear Door RH Entry Unlock Function does not Operate Power door lock control system

Click here

Rear door outside handle assembly (for rear door RH) -
Certification ECU (smart key ECU assembly) -
Harness or connector -
Driver Door Entry Lock and Unlock Functions do not Operate Power door lock control system

Click here

Front door outside handle assembly (for driver door) -
Certification ECU (smart key ECU assembly) -
Harness or connector -
Front Passenger Door Entry Lock and Unlock Functions do not Operate Power door lock control system

Click here

Front door outside handle assembly (for front passenger door) -
Certification ECU (smart key ECU assembly) -
Harness or connector -
Rear Door LH Entry Lock and Unlock Functions do not Operate Power door lock control system

Click here

Front door outside handle assembly (for rear door LH) -
Certification ECU (smart key ECU assembly) -
Harness or connector -
Rear Door RH Entry Lock and Unlock Functions do not Operate Power door lock control system

Click here

Front door outside handle assembly (for rear door RH) -
Certification ECU (smart key ECU assembly) -
Harness or connector -
Driver Door Entry Lock Function does not Operate Power door lock control system

Click here

Front door outside handle assembly (for driver door) -
Certification ECU (smart key ECU assembly) -
Harness or connector -
Front Passenger Door Entry Lock Function does not Operate Power door lock control system

Click here

Front door outside handle assembly (for front passenger door) -
Certification ECU (smart key ECU assembly) -
Harness or connector -
Rear Door LH Entry Lock Function does not Operate Power door lock control system

Click here

Front door outside handle assembly (for rear door LH) -
Certification ECU (smart key ECU assembly) -
Harness or connector -
Rear Door RH Entry Lock Function does not Operate Power door lock control system

Click here

Front door outside handle assembly (for rear door RH) -
Certification ECU (smart key ECU assembly) -
Harness or connector -
All Door Entry Unlock Functions except Driver Door do not Operate Certification ECU (smart key ECU assembly)

Click here

Main body ECU (multiplex network body ECU) -
Room Oscillator does not Recognize Key Smart entry and start system (for Start Function)

Click here

NO. 1 indoor electrical key antenna assembly (front floor) -
NO. 1 indoor electrical key antenna assembly (inside luggage compartment) -
Certification ECU (smart key ECU assembly) -
Harness or connector -
Electrical key transmitter sub-assembly -
Luggage Compartment Door Entry Unlock Function does not Operate when Key is Outside Luggage Compartment Power door lock control system

Click here

Luggage Door Opening Switch Assembly -
Electrical key antenna (outside luggage) -
Certification ECU (smart key ECU assembly) -
Harness or connector -
Key Luggage Compartment Lock-in Prevention Function does not Operate Power door lock control system

Click here

NO. 1 indoor electrical key antenna assembly (inside luggage compartment) -
Certification ECU (smart key ECU assembly) -
Harness or connector -