"This is your Navigation System's control panel. Vehicle functions are viewed on a series of screens. Use the control buttons to display the corresponding menus. There are two ways to select keys: one, touch the item on the screen or two, turn the SCROLL knob left or right to highlight the preferred item and press the SCROLL knob to select. At any point you can return to the previous screen by selecting the BACK button. Press the DAY/ NIGHT button and turn the TUNE/SCROLL/AUDIO knob to change the display brightness. Press this button for more than two seconds to turn the display OFF. Press any button, to turn the display ON. Your Navigation System starts when the ignition is in the ACC or ON position. "