2010 Toyota Matrix Owners Manual - Page 86

1-6. Theft deterrent system Engine immobilizer system The vehicle's keys have built-in transponder chips that prevent the engine from starting if the key has not been previously registered in the vehicle's on-board computer. Never leave the keys inside the vehicle when you leave the vehicle. 1 The indicator light flashes after the key has been removed from the engine switch to indicate that the system is operating. Before driving