How do I enable night vision assist in my Audi A8?

I recently purchased an Audi A8 and I noticed it has a night vision assist feature. However, I'm not sure how to use it. Can someone explain how to enable it?

To enable night vision assist in your Audi A8, first turn on your headlights and then press the 'NV' button on your control panel.

One important thing to note is that night vision assist only works in low-light situations. Make sure the conditions are dark enough before trying to use it.