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
emergencySelecting trailer ball
Use the correct trailer ball for your application.
Trailer ball load rating
matches or exceeds the gross
trailer weight rating of the trailer.
Ball diameter
matches the size of the trailer coupler.
Most couplers are stamped
with the required trailer ball size.
Shank len ...