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 > Navigation System: Diagnostic Trouble Code Chart
DIAGNOSTIC TROUBLE CODE CHART
Navigation System
DTC No.
Detection Item
Link
B1324
Lost Communication with Meter
B153A
GVIF Disconnected (from Extension Module to H/U)
...
Toyota CH-R Service Manual > Navigation System: Parts Location
PARTS LOCATION
ILLUSTRATION
*1
MAP LIGHT ASSEMBLY (TELEPHONE MICROPHONE ASSEMBLY)
*2
SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY)
*3
NO. 1 ENGINE ROOM RELAY BLOCK
- DCM/MAYDAY FUSE
*4
PARK/NEUTRAL POSI ...