How do I enable the lane departure warning in my Audi A7?

I recently purchased an Audi A7 and I noticed that it has a lane departure warning feature. However, it doesn't seem to be working. How can I enable it and ensure it is functioning properly?

First, make sure that the lane departure warning feature is actually included in your specific model of Audi A7. If it is, then check your car's settings menu, typically found on the infotainment screen, to see if the feature is disabled. If it is, simply enable it.