Engine Immobilizer System - Lexus 2004 LS430 Owner's Manual

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D Do not bend the key grip or flat key.
D Do not cover the key grip or flat key with any material
that cuts off electromagnetic waves.
D Do not knock the key or flat key hard against other
objects.
D Do not leave the key or flat key exposed to high
temperatures for a long period, such as on the
dashboard or hood under direct sunlight.
D Do not put the key or flat key in water or wash it in an
ultrasonic washer.
D Do not use the key or flat key with electromagnetic
materials.
KEYS AND DOORS

ENGINE IMMOBILIZER SYSTEM

Deactivation using the smart key system
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The engine immobilizer system is a theft prevention
system. When you enter the vehicle carrying a smart key
and push the ignition switch, the electronic code in the
key is automatically checked to determine whether it
corresponds to the registered ID code for the vehicle. If
the key indicator light comes on after the ID code
verification, you can start the engine.
This system is automatically set when the ignition switch is
turned to the "LOCK" position. At this time, the security
indicator light flashes. When you push the ignition switch, the
security indicator light goes out and the system is cancelled
automatically, which enables the engine to start.
The engine immobilizer system cannot be cancelled if the
cancel switch of the smart key system is turned on. For details,
see "Deactivating the smart key system" on page 34.
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