Theft Deterrent System; Immobilizer System - Toyota prius Owner's 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 a 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.
This system is designed to help prevent vehicle theft but does not
guarantee absolute security against all vehicle thefts.
 System maintenance
The vehicle has a maintenance-free type immobilizer system.
 Conditions affecting operation
Depending on the surrounding environment and conditions, the immobilizer
system may not operate properly. This may prevent the hybrid system from
starting. (P. 84)
PRIUS_OM_OM47871E_(EE)
The indicator light flashes after
the "POWER" switch has been
turned off to indicate that the
system is operating.
The indicator light stops flash-
ing after the "POWER" switch
has been turned to ACCES-
SORY or ON mode to indicate
that the system has been can-
celed.
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