Toyota 2012 Yaris Hatchback Owner's Manual page 111

2-1. Driving procedures
Turn signal lever
The turn signal lever can be used to show the following intentions
of the driver:
■
Turn signals can be operated when
The engine switch is in the "ON" position.
■
If the indicator flashes faster than usual
Check that a light bulb in the front or rear turn signal lights has not burned
out.
130
Right turn
Left turn
Lane change to the right
(push and hold the lever
partway)
The right hand signals will
flash until you release the
lever.
Lane change to the left
(push and hold the lever
partway)
The left hand signals will flash
until you release the lever.