Toyota Yaris: 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.
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...
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:
INSPECTION PROCEDURE 1. INSPECT REAR SEAT INNER BELT ASSEMBLY LH (a) Measure the resistance according to the value(s) in the table below. Standard Resistance: Tester Connection Condition Specified Condition
If the result is not as specified, replace the rear seat inner belt assembly LH...
DESCRIPTION These DTCs are stored when there is a CAN communication malfunction between the certification ECU (smart key ECU assembly) and ECM, main body ECU (multiplex network body ECU) or combination meter assembly. DTC No. Detection Item DTC Detection Condition Trouble Area Note U010087 Lost Communication with ECM/PCM "A" Missing Message CAN communication malfunction between certification ECU (smart key ECU assembly) and ECM (1-trip detection logic*) ECM
Turn the ignition switch to ON and wait at least 10 seconds...
Categories
Before refueling, close all the doors, windows, and the liftgate/trunk
lid, and switch the ignition OFF.
To open the fuel-filler lid, pull
the remote fuel-filler lid release.

To remove the fuel-filler cap, turn it counterclockwise.
Attach the removed cap to the
inner side of the fuel-filler lid.
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