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.
| Symptom | Suspected Area | Link |
|---|---|---|
| Entry interior alarm does not sound | Meter/gauge system | |
| Certification ECU (Smart key ECU assembly) | - | |
| Entry exterior alarm and answer-back buzzer do not sound | Certification ECU (Smart key ECU assembly) | |
| Main Body ECU (Multiplex Network Body ECU) | - | |
| Wire harness or connector | - | |
| All door entry lock/unlock functions and wireless functions do not operate | Power door lock control system | |
| Electrical key transmitter sub-assembly | - | |
| Transmitter battery | - | |
| Door control receiver | - | |
| Certification ECU (Smart key ECU assembly) | - | |
| Wire harness or connector | - | |
| All door entry lock/unlock functions do not operate, but wireless functions operate | Electrical key transmitter sub-assembly | |
| Certification ECU (Smart key ECU assembly) | - | |
| Driver side door entry unlock function does not operate | Power door lock control system | |
| Front door outside handle assembly (for driver door) | - | |
| Certification ECU (Smart key ECU assembly) | - | |
| Wire harness or connector | - | |
| Front passenger side door entry unlock function does not operate | Power door lock control system | |
| Front door outside handle assembly (for front passenger door) | - | |
| Certification ECU (Smart key ECU assembly) | - | |
| Wire harness or connector | - | |
| Driver side door entry lock and unlock functions do not operate | Power door lock control system | |
| Front door outside handle assembly (for driver door) | - | |
| Certification ECU (Smart key ECU assembly) | - | |
| Wire harness or connector | - | |
| Front passenger side door entry lock and unlock functions do not operate | Power door lock control system | |
| Front door outside handle assembly (for front passenger door) | - | |
| Certification ECU (Smart key ECU assembly) | - | |
| Wire harness or connector | - | |
| Driver side door entry lock function does not operate | Power door lock control system | |
| Front door outside handle assembly (for driver door) | - | |
| Certification ECU (Smart key ECU assembly) | - | |
| Wire harness or connector | - | |
| Front passenger side door entry lock function does not operate | Power door lock control system | |
| Front door outside handle assembly (for front passenger door) | - | |
| Certification ECU (Smart key ECU assembly) | - | |
| Wire harness or connector | - | |
| Room oscillator does not recognize key | Entry and start system (for Start Function) | |
| No. 2 indoor electrical key antenna assembly (front floor) | - | |
| Indoor electrical key antenna (rear floor) | - | |
| Certification ECU (Smart key ECU assembly) | - | |
| Wire 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 | |
| Luggage electrical key switch | - | |
| Electrical key antenna (outside luggage compartment) | - | |
| Certification ECU (Smart key ECU assembly) | - | |
| Wire harness or connector | - | |
| Key luggage compartment lock-in prevention function does not operate | Power door lock control system | |
| No. 1 indoor electrical key antenna assembly (inside luggage) | - | |
| Certification ECU (Smart key ECU assembly) | - | |
| Wire harness or connector | - |