There are these Light Bars and Lights you can put on them, but I can't figure out how to turn them On pressing a Key on the Keyboard on ETS2 (Euro Truck Simulator 2).

2 Answers 2


You have to press the F4 Key to enter in the light adjustment menu.


On my game I've found that 'o' is the game default for beacons

  • 1
    Is it O on a PS Controller? Or o as the keyboard's o?
    – Fredy31
    Commented Aug 15, 2021 at 13:24
  • The letter "o" on the keyboard toggles the beacons.
    – Lennart
    Commented Jul 7, 2023 at 13:20

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