Hey, just read through the real manual of the BR143 and I actually just now learned about the different driving programmes and the so-called "freier Auslauf". I've found all the other switches for the other programs but not the mentioned "freier Auslauf". Does it even exist in the game? maybe someone can point me in the right direction.
It does not exist in the game. It would be a silver button on the right side of the speed controller (Geschwindigkeitswähler).
If added to the game I wonder this is part of the traction lock system or not? Deutsche Reichsbahn Lehrfilm Baureihe 243 DB Baureihe 143. Video is in the German language