For safety and security -> Engine immobilizer system for Your Toyota 4 Runner SUV Fifth Generation (2010-2024)

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1-3. Theft deterrent system  
Engine immobilizer system  
The vehicle’s keys have built-in transponder chips that prevent  
the engine 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 vehi-  
cle.  
This system is designed to help prevent vehicle theft but does  
not guarantee absolute security against all vehicle thefts.  
The indicator light flashes after  
the engine switch has been turned  
off to indicate that the system is  
operating.  
The indicator light stops flashing  
after the engine switch has been  
turned to ACCESSORY or IGNI-  
TION ON mode to indicate that  
the system has been canceled.  
System maintenance  
The vehicle has a maintenance-free type engine immobilizer system.  
Conditions that may cause the system to malfunction  
If the grip portion of the key is in contact with a metallic object  
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  
WARNING  
Certifications for the engine immobilizer system  
Changes or modifications not expressly approved by the party responsible  
for compliance could void the user’s authority to operate the equipment.  
NOTICE  
To ensure the system operates correctly  
Do not modify or remove the system. If modified or removed, the proper  
operation of the system cannot be guaranteed.  
4RUNNER (U)