Of course you can also use the new display brightness buttons in the action center with.
Surface pro 4 keyboard backlight turn on.
Enable keyboard lighting and select the brightness you want.
Decrease the keyboard backlight off with fn f1.
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.
Click on the tab to access additional options.
Next choose the time for keyboard backlight s auto shutdown.
Press the fn key again to unlock them.
If you want to turn it on you can press and hold the key next to the key which you.
So this is how you turn the backlight of the keyboard on or off.
Activating the special keys increases or decreases the keyboard backlight on the surface keyboard.
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 to lock the function keys.
To turn off the backlight in the surface keyboard press the key next to esc key see the image below.
Simply press fn del to increase or the fn backspace buttons to decrease the display brightness.
Move the slider under the keyboard backlight tab to the right to enable the backlight.