Tech Tips
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.
If the problem only occurs in certain locations or at certain times of day, check for wave interference.
If the vehicle components are added, check for wave interference from the added components.
| Symptom | Suspected Area | See page |
|---|---|---|
| Security indicator light does not blink | Proceed to "Security Indicator Light Does not Blink" | |
| Hybrid control system cannot be started*1 | Certification ECU (smart key ECU assembly) | |
| Hybrid control system cannot be started*1 | ID code box (immobiliser code ECU) | |
| Hybrid vehicle control ECU assembly | ||
| Hybrid control system | ||
| Power source mode cannot be changed*1 | Power switch | |
| Certification ECU (Smart Key ECU Assembly) | ||
| Steering lock lock/unlock not possible*2 | Steering lock ECU (steering lock actuator assembly) |
*1: Refer to Problem Symptoms Table for Smart Entry and Start System (for Start Function).
*2: Refer to Problem Symptoms Table for Steering Lock System.