What Causes the Key Light to Flash on the Corolla Dashboard?

[VonGenesis]

The key light flashing on the Corolla dashboard is caused by the activation of the engine immobilizer system. Reasons for the key light flashing: If the green key light on the dashboard is flashing and the engine won't start, it's because Honda's anti-theft function has been activated, preventing the vehicle from starting. Solutions for the key light flashing: If the key light on the dashboard is flashing, it means the 'engine chip' inside the key has not been detected. You can try opening the main key to check if there are any abnormalities in the glass tube-shaped engine chip inside and try changing the orientation of the chip. If no abnormalities are found but the engine still won't start, you may need to get a suitable engine chip matched and installed inside the key to start the vehicle. Alternatively, you can consult a professional automotive locksmith to disable the vehicle's immobilizer system using specialized equipment, followed by reprogramming and rematching. Another option is to contact a 4S dealership to disable the anti-theft system and reset the password.