The HEP is not restored for the CTC-3 after a game save. Hoe to reproduce? Drive service MTBA Stoughton #916 After leaving Stoughton I saved the game. Left the service to the Main Menu and the resumed the game. Pic before and after the save. You clearly see all lights in cab panel are off, including the HEP, instrument lights and so on. You cannot restore them manually, because the cab car has no function to start the HEP again.
I can confirm that this exact problem happens to me. And nothing happens when I try to restart the HEP.