Stopping the engine
The ignition switch should be turned off only when the vehicle is stopped and the engine is idling.

Do not stop the engine when the vehicle is moving. This will cause loss of power to the power steering and the brake booster, making steering and braking more difficult. It could also result in accidental activation of the “LOCK” position on the ignition switch, causing the steering wheel to lock.
See also:
Behavior with key lock-in prevention function operational
With the driver’s door open, the doors are
automatically kept unlocked even if the
front side of the power door locking switch
is pressed. ...
Example of the type of accident in which the SRS curtain airbag will
basically not deploy.
The SRS curtain airbags are not basically
designed to deploy if the vehicle pitches
end over end. ...
Security indicator light
This indicator light shows the status of the alarm system. It also indicates
operation of the immobilizer system. ...
