When you get into the vehicle, the hazard warning lights button in the overhead console lights up, showing that you can use it. There's also a button located in the bottom bar in the center display.
Press the hazard warning lights button, either in the overhead console or the center display.
The hazard warning flasher buttons flash simultaneously in the same rhythm as the lights. If you're driving, both of the turn signal symbols in the instrument panel also flash and you will hear a clicking sound.