2009 Toyota Camry Owners Manual - Page 81
2009 Toyota Camry Manual
Page 81 highlights
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. Vehicles with smart key system: The indicator light flashes after the "ENGINE START STOP" switch has been turned OFF to indicate that the system is operating. Vehicles without smart key system: The indicator light flashes after the key has been removed from the engine switch to indicate that the system is operating.