How to stop your MacBook from changing keyboard brightness automatically
To adjust your MacBook’s keyboard brightness levels, you’ll have to start by disabling automatic keyboard brightness adjustments. You can press Option + F5 or Option + F6 on your keyboard to access the keyboard preferences page quickly.
Alternatively, you can click the Apple logo in the top-left corner of your screen and go to System Preferences > Keyboard and select the Keyboard tab.
On this Keyboard preferences page, disable Adjust keyboard brightness in low light.
How to adjust your MacBook’s keyboard brightness using your keyboard
The quickest way to adjust keyboard brightness on a Mac is to use the keyboard’s function keys. If you press F5 (small sunrise icon), the keyboard brightness will decrease and if you press F6 (large sunrise icon), it will increase. There is a useful indicator on the screen that tells you how bright the keyboard backlight is. When you press the F5 or F6 key, you can use this indicator to measure the brightness level.
Please note if you have changed the keyboard settings to use F1, F2, etc. As a standard function key, you can press fn + F5 to decrease the brightness of the keyboard, and press fn + F6 to increase the brightness.
How to adjust your MacBook’s keyboard brightness using the Control Center
If you are using macOS Big Sur (version 11) or later, you can use the Control Center to quickly adjust the keyboard brightness on your Mac. To see which version you are running, click the Apple logo in the upper left corner of the screen, and then select About This Mac. If you have version 11 or higher, you’re good to go.
Click the control center icon next to the clock in the upper right corner of the screen, and then select the keyboard brightness. You can click and drag the slider to the right to increase the brightness of the keyboard and drag to the left to decrease the brightness.
You can quickly add the keyboard brightness button to the menu bar to save clicks Click the Apple logo again and select System Preferences> Dock & Menu Bar. In the left pane, select Keyboard Brightness, and then in the right pane, select Show in the menu bar. The keyboard brightness icon (which looks like a sunrise) will appear in the top menu bar.
How to turn off MacBook keyboard backlight automatically
You can also have your MacBook turn off the keyboard backlight when you are not using the keyboard by going to System Preferences > Keyboard or press Option + F5 or Option + F6 on your keyboard.
On the keyboard preference page, select Turn on keyboard backlight later. There is a drop-down menu that defaults to 5 seconds, which means that the keyboard backlight will turn off after 5 seconds of inactivity, but you can click the drop-down menu and select a different time interval.
How to disable keyboard backlight on your MacBook
Although most people don’t need to do this, it can be annoying for some people to use their MacBook with an external keyboard and accidentally turn on the keyboard backlight.
After disabling automatic keyboard brightness adjustment, just press the F5 button on the keyboard until the keyboard backlight turns off. Alternatively, you can go to “Control Center”> “Keyboard Brightness” and move the slider all the way to the left. Once the keyboard backlight is turned off, it will not turn on again unless you choose to manually turn it on again.