Toyota 2012 Yaris Hatchback Owner's Manual page 54

1-6. Theft deterrent system
Engine immobilizer system
The vehicle's keys have built-in transponder chips that prevent the
engine from starting if a 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.
■
System maintenance
The vehicle has a maintenance-free type engine immobilizer system.
■
Conditions that may cause the system to malfunction
●
If the grip portion of the key is in contact with a metallic object
●
If the key is in close proximity to or touching a key to the security system
(key with a built-in transponder chip) of another vehicle
72
∗
The indicator light flashes after
the key has been removed
from the engine switch to indi-
cate that the system is operat-
ing.
The indicator light stops flash-
ing after the registered key
has been inserted into the
engine switch to indicate that
the system has been can-
celed.
∗
: If equipped