You can adjust the brightness of the MFD Touch screen by pressing the Settings button in the bottom left corner and then selecting VBOX Display Settings.
You can adjust the screen brightness manually. 1 is the dimmest and 5 is the brightest. The Auto setting is also available. It uses the internal ambient light sensor to automatically adjust the screen brightness. In dark conditions, the screen brightness will dim, and in light conditions, the screen will brighten. Tap the button to cycle through the available options.