Decrease the keyboard backlight off with fn f1.
Surface pro 4 keyboard backlight turn on.
If you keep on pressing this key you can see that the backlight intensity goes down until it switches off completely.
Press the fn key again to unlock them.
A light appears on the fn keys when the keys are locked into function mode.
So in case you are running out of battery you can disable the backlight or if you are working in an environment where there is adequate lighting you can always turn off the backlight.
Simply press fn del to increase or the fn backspace buttons to decrease the display brightness.
Of course you can also use the new display brightness buttons in the action center with.
Next choose the time for keyboard backlight s auto shutdown.
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Enable keyboard lighting and select the brightness you want.
If you want to turn it on you can press and hold the key next to the key which you.
Activating the special keys increases or decreases the keyboard backlight on the surface keyboard.
Move the slider under the keyboard backlight tab to the right to enable the backlight.
Increase the keyboard backlight on with fn f2.
Press the fn key to lock the function keys.