Theft Deterrent System; Immobilizer System - Toyota 2008 Prius Quick Reference Manual

1-7. Theft deterrent system

Immobilizer system

The vehicle's keys have built-in transponder chips that prevent the
hybrid system from starting if the key has not been previously regis-
tered in the vehicle's on-board computer.
Never leave the keys inside the vehicle when you leave the vehicle.
PRIUS_U_(L/O_0802)
Vehicle with smart key sys-
tem:
The indicator light flashes after
the "POWER" 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 "POWER" switch to
indicate that the system is
operating.
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