'18 NX. It seems that the only default display options on the infotainment screen are a tri-screen or dual-screen. Am I missing the option to default to just a single screen when I turn the car on? It's annoying to have to select the screen I want to display in full each time I start the car.

 

My '16 runs only one screen but on occasion I will see multiple screens and just hit the menu button and select the single screen that I want. I'm going to assume that you have navigation. If so the screen set up is in the Navigation manual. Too many screens to show here.

 

On my '19 if I use the Radio or Media button it will show those on the entire screen. The next time I start the vehicle that same screen is shown. I believe whatever you have on the screen when you shut the car off will return when you start it again.