After starting up your car, navigate to the second page of options by pushing the arrow in the bottom left. It should give you the options of Bluetooth, auxiliary, and info. Your going to click info->settings. Once in settings there is an option to "Link to Day/Night View" and you will choose time instead of headlight.
Now it gives you an option for "Time Settings" underneath where you previously were. When you click that it will bring up a page to select the hour and minutes of sunrise and sunset.
Sunrise is when it will switch to day view, while sunset is when it will dim and switch to night. Try setting the sunset time to something later that way it stays bright for you.
Hope that helped!