Toyota Yaris: Security System / How to Arm the System

Toyota Yaris XP210 (2020-2025) Owner's Manual / Before Driving / Security System / How to Arm the System

Close the windows securely.
Switch the ignition OFF.
Make sure the hood, the doors, and the liftgate/trunk lid are closed.
Press the lock button on the smart key or lock the driver’s door from the outside with the auxiliary key.
The hazard warning lights will flash once.
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The following method will also arm the theft deterrent system: Press the door-lock switch “ ” while any door is open and then close all of the doors.

With the advanced keyless function: Press a request switch.

The security indicator light in the instrument panel flashes twice per second for 20 seconds.
After 20 seconds, the system is fully armed.

The theft deterrent system can also be armed by activating the auto relock function with all the doors, the liftgate/trunk lid and the hood closed. Refer to Smart Key.
The system will disarm if one of the following operations takes place within 20 seconds after pressing the lock button:
Unlocking any door.

Opening any door.

Opening the hood.

Switching the ignition ON.

To rearm the system, do the arming procedure again.
When the doors are locked by pressing the lock button on the smart key or using the auxiliary key while the theft deterrent system is armed, the hazard warning lights will flash once to indicate that the system is armed.

Theft Deterrent System (If equipped)

If the theft deterrent system detects an inappropriate entry into the vehicle, which could result in the vehicle or its contents being stolen, the alarm alerts the surrounding area of an abnormality by sounding the horn and flashing the hazard warning lights...

To Turn Off an Armed System

An armed system can be turned off using any one of the following methods: Pressing the unlock button on the smart key. Starting the engine with the push button start...

Other information:

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