I noticed this bug when doing the scenario Bargteheide Return. When I'm going back in the br 766.2 I need to unlock the brake key, but when I do that I can't drive. Then when I lock it its starts driving. Then I need to unlock it again(when driving) so I can brake
Don’t have HHL, but if you have just changed ends, did you switch of the brake key on the other end of the train?
another thing is you may need to press the brake overcharge button which is next to the brake key. i had that problem until i pressed the brake overcharge key