How to access the hidden engineering menu in Audi A5?

I recently got an Audi A5 and heard about a hidden engineering menu that gives access to some advanced features. How do I access it and what features can I access from it?

To access the hidden engineering menu in an Audi A5, turn on the ignition and use the navigation buttons to navigate to the CAR menu. Then, press the SET button and hold for 10 seconds until the menu appears.

The hidden engineering menu in Audi A5 allows you to access features such as individual component testing and system information. Just be careful not to make any changes unless you know what you're doing.