The emergency flashers are used to warn other drivers when the vehicle has to be stopped in the road due to a breakdown, etc.
Press the switch.
All the turn signal lights will flash.
To turn them off, press the switch once again.

■Emergency flashers If the emergency flashers are used for a long time while the engine is not operating, the battery may discharge
If your vehicle has to be stopped in an emergencyToyota CH-R Service Manual > Roof Headlining: Installation
INSTALLATION
PROCEDURE
1. INSTALL ROOF HEADLINING
(a) Insert the roof headlining assembly into the cabin from the back door.
Install in this Direction
NOTICE:
Check that the corners of the roof headlining are not folded, twisted
or otherwise deformed ...
Toyota CH-R Service Manual > Lighting (ext): Side Turn Signal Light Bulb
Components
COMPONENTS
ILLUSTRATION
*1
OUTER MIRROR COVER
*2
SIDE TURN SIGNAL BULB
*3
SIDE TURN SIGNAL LIGHT SOCKET
*4
SIDE TURN SIGNAL LIGHT ASSEMBLY
Removal
REMOVAL
CAUTION / NOTICE / ...