So I have had this problem for a awhile, the game(S) think i'm pressing the acceleration button all the time. non stop, the only time it will stop is if I disconnect the controller, press the brake other than that its WOT all the time. (I thought it was ETS2 causing it, then I bought ATS today and it has the same problem.) Keyboard works just fine, and the acceleration axis is the only one "stuck". Other games the controller works just fine, for example Beam, GTAV etc. Thanks
It needs a bit more specific setup. Go to the axis configuration wizard in the game and rebind acceleration to the same trigger, then just mess around with the "Inverted", "Centered" etc. options until you find the right combination. You'll know it's working when the little yellow bar is empty by default.