I'm running in cab mode, in TS2010. Press the B or the horn toggle on the Raildriver console and the horn does blow, but the button don't move and I can't blow the horn by clicking the button with the mouse. Maybe it's different with other versions, I don't know since I only have TS2010 installed at the moment. No bell either, altho that's probably missing from the AC4400 I'm using, forgot where I got that one from.