Toyota Yaris: Security System / How to Arm the System

Toyota Yaris XP210 (2020-2026) 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.

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:

Toyota Yaris XP210 (2020-2026) Reapir and Service Manual: Lost Communication with Steering Angle Sensor Module Missing Message (U012687,U010087,U012987,U014087,U023A87)

DESCRIPTION The power steering ECU assembly receives signals from the steering sensor, skid control ECU (brake actuator assembly), forward recognition camera, ECM and clearance warning ECU assembly via CAN communication. DTC No. Detection Item DTC Detection Condition Trouble Area Warning Indicate Return-to-normal Condition Note U010087 Lost Communication With ECM/PCM "A" Missing Message Lost communication with ECM CAN communication system ECM EPS warning light: Does not come on After normal confirmation - U012687 Lost Communication with Steering Angle Sensor Module Missing Message Lost communication with steering sensor CAN communication system Steering sensor EPS warning light: Does not come on After normal confirmation - U012987 Lost Communication with Brake System Control Module Missing Message Lost communication with skid control ECU (brake booster with master cylinder assembly) CAN communication system Skid control ECU (Brake booster with master cylinder assembly)(for TMC Made HV Model) Skid control ECU (Brake actuator assembly)(for TMMF Made HV Model) EPS warning light: Does not come on After normal confirmation - U014087 Lost Communication with Body Control Module Missing Message Lost communication with main body ECU (multiplex network body ECU) CAN communication system Main body ECU (multiplex network body ECU) EPS warning light: Does not come on After normal confirmation - U023A87 Lost Communication with Image Processing Module "A" Missing Message Lost communication with forward recognition camera CAN communication system Forward recognition camera EPS warning light: Does not come on After normal confirmation w/ Toyota Safety Sense PROCEDURE 1...

Toyota Yaris XP210 (2020-2026) Reapir and Service Manual: Installation

INSTALLATION PROCEDURE 1. INSTALL REAR DIFFERENTIAL SUPPORT (a) Install the differential support to the rear differential carrier assembly with 3 new bolts. Torque: 120 N·m {1224 kgf·cm, 89 ft·lbf} 2. INSTALL REAR DIFFERENTIAL DYNAMIC DAMPER (a) Install the rear differential dynamic damper to the differential support with 2 bolts...