Considering a Model X, when I looked at the Model S back in 2015 there wasn't a way to turn off the main screen. Basically, I don't want to see it on at night. Back in 2015 the best they could offer me was a cleaning mode to switch it mostly black. But then it had the words Cleaning Mode displayed. That was also several menus deep and wasn't a one button press kind of thing. Has anything changed?
Is there a setting to turn off the screen?
Is there a setting to turn off the screen?