Keys and Doors -> Engine immobiliser system for Your Toyota Avalon 4 Door Second Generation (2000-2004)

’03 AVALON U (L/O 0206)  
Engine immobiliser system  
Inserting the registered key in the ignition  
switch automatically cancels the system,  
which enables the engine to start. The  
indicator light will go off.  
For your Toyota 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  
Toyota dealer can make for you.  
If you make your own duplicate key,  
you will not be able to cancel the sys-  
tem or start the engine.  
The engine immobiliser system is  
a
The system is automatically set when the  
key is removed from the ignition switch.  
The indicator light will start flashing to  
show the system is set.  
NOTICE  
theft prevention system. When you in-  
sert the key in the ignition switch, the  
transponder chip in the key’s head  
transmits an electronic code to the ve-  
hicle. The engine will start, only when  
the electronic code in the chip corre-  
sponds to the registered ID code for  
the vehicle.  
Do not modify, remove or disas-  
semble the engine immobiliser sys-  
tem. If any unauthorized changes or  
modifications are made, the proper  
operation of the system cannot be  
guaranteed.  
If any of the following indicator conditions  
occurs, contact your Toyota dealer.  
D The indicator light stays on except  
when the theft deterrent system is set-  
ting or activating. (See “Theft deterrent  
system” in this section.)  
D The indicator light does not start flash-  
ing when the key is removed from the  
ignition switch.  
D The indicator light flashes unsteady.  
2003 AVALON (OM41401U)  
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