RSN On the Dosto Gen4 the destination diplay only shows on the control car and the passenger lights don't turn on. When driving the DB BR 155 the SIFA sometimes doesn't sound. TVL When switching from an external camera to an internal camera on the class 20 the external sounds still play forcing you to:stand up, the DSD goes off and sit back down to get the internal sounds working. Additional notes When driving the DB BR 425, after turning the SIFA on there is no indication on the HUD. When applying the brake on the class 377/4 the in cab Brake Cylinder guage doesn't work.