Magic keyboard volume not working on macbook pro 13 (2019))

Hello MakBooc-user,

Welcome to Apple Support Communities!

Please use these steps to make sure your Magic Keyboard is correctly paired to your Mac to help get the buttons working:

"Follow these steps to set up your Magic Keyboard, Magic Mouse, or Magic Trackpad:

1. Connect a Lightning to USB Cable1 or a USB-C to Lightning Cable to the Lightning port on the device2 and connect the other end of the cable to your Mac.
2. Make sure that the device's power switch is in the ON position. (Green is visible under the switch when the device is on.)
3. Choose Apple menu  > System Preferences, then click Bluetooth to open the Bluetooth preferences window. When the device pairs with your Mac, it appears in the list of devices.
4. Check the Bluetooth preferences window to see your device's charge level. When the device is charged, unplug it for wireless use."

This Apple Support page has the full details: Set up your Magic Keyboard, Magic Mouse, or Magic Trackpad with your Mac - Apple Support

If the issue remains, make sure your software is working as expected by installing all pending updates.

This Apple Support page has the full steps if needed: Update macOS on Mac - Apple Support

You might also try pairing your keyboard to another Mac to see if the same thing happens.

We hope this helps get the volume buttons working as expected.

Cheers!

Hi there MakBooc-user,

It sounds like the one 'currently in use' is the one built-in to your MacBook Pro.

Are we correct in understanding that the settings for your external keyboard aren't showing, even when plugging it into your Mac?

Does it show in your Bluetooth settings? We provided this link earlier, but wanted to provide it again just in case: Set up your Magic Keyboard, Magic Mouse, or Magic Trackpad with your Mac

Which macOS Catalina version number is currently installed, and are there any issues with pairing your keyboard with another Mac(if you're able to test this)?

Cheers!

Hey MakBooc-user,

If you use the "fn" key along with the volume key, does it then work?

Use standard function keys

Standard function keys work differently depending on the app and the keyboard shortcuts that you've set up. Some apps have their own keyboard shortcut preferences that you can customize.

To use the standard function keys, hold the Function (Fn)/Globe key  when pressing a function key. For example, pressing both Fn and F12 (speaker icon) performs the action assigned to the F12 key instead of raising the volume of your speakers. 

If your keyboard doesn’t have an Fn key, try pressing and holding the Control key when pressing a function key.

If not, and following these steps is not working as expected:

Change the default function key behavior

If you want to change the top row of keys to work as standard function keys without holding the Fn key, follow these steps:

1. Choose Apple menu  > System Preferences.

2. Click Keyboard.

3. Select "Use F1, F2, etc. keys as standard function keys". 

Then, the next step is to contact Apple Support so they can take a look at what's happening:

Get Support

The above information is from this article: How to use the function keys on your Mac

Take care!

Hey MakBooc-user,

Thank for reaching back out. The settings that appear in System Preferences > Keyboard should be the settings for the current keyboard in use. You can checkmark the box that allows the use of F1, F2, etc keys. If you believe the wrong keyboard is active, click the bottom left where it says "Change Keyboard Type".

Cheers.