Lexus IS250 2009, Service Manual

Page: 77 / 542

77
1
Be
fore
driving
1-6. Theft deterrent system
Engine immobilizer system
n
System maintenance
The vehicle has a maintenance-free type of engine immobilizer system.
n
Conditions that may cause the system to malfunction
l
If the grip portion of the key is in contact with a metallic object
l
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
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.
The indicator light flashes after
the “ENGINE START STOP”
switch has been turned OFF to
indicate that the system is oper-
ating.