tom01015, pay no attention to the catty comment. You can call that thing whatever you want!
A few things come to mind.
- First, make sure you are looking at the right setting. In my 2014 RRS, the night/day setting is actually called "Theme" and the settings are light/dark. The setting is located in Setup / Screen / Theme. I believe 2016s infotainment vary slightly, but it shouldn't be too far off.
- Are you lights on Auto? It could be that if your lights are not set to Auto, the screen won't change modes until you actually turn on the lights.
- Something else I thought of is an obstruction of the sensor. The night/day screen feature is triggered by the auto lights sensor, which in most cars is located where the dash meets the windshield and looks like a little plastic dome. Check that out to make sure there's nothing covering it.