Engine Immobiliser System - Lexus RX300 Manual

KEYS AND DOORS
11L023-3
D Do not bend the key grip.
D Do not cover the key grip with any material that cuts off
electromagnetic waves.
D Do not knock the key hard against other objects.
D Do not leave the key exposed to high temperatures for a long
period, such as on the dashboard and hood under the direct
sunlight.
D Do not put the key in water or wash it in an ultrasonic washer.
D Do not use the key with electromagnetic materials.
10

ENGINE IMMOBILISER SYSTEM

11L024–3
The engine immobiliser system is a theft prevention system.
When you insert the key in the ignition switch, the transponder
chip in the key's head transmits an electronic code to the vehicle.
The engine will start, only when the electronic code in the chip
corresponds to the registered ID code for the vehicle.
The system is automatically set when the key is removed from the
ignition switch. At this time, the "SECURITY" indicator light at the
bottom of the instrument cluster flashes. When you insert the key in
the ignition switch, the "SECURITY" indicator light goes out and
the system is canceled automatically, which enables the engine to
start.
For your Lexus dealer to make you a new key with built–in
transponder chip, your dealer will need your key number and master
key. However, there is a limit to the number of additional keys your
Lexus dealer can make for you.