Toyota 2015 Corolla Owner's Manual page 454

482
8-1. Essential information
Emergency flashers
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.
COROLLA_TMMMS_TMMC_U (OM12F00U)