Why does my Audi A8 have an illuminated check engine light?

I recently noticed that the check engine light on my Audi A8 is constantly illuminated. What could be causing this and what steps should I take to resolve it?

It's possible that there is an issue with the engine or emissions control system. The best course of action would be to take your A8 to a certified mechanic to have it diagnosed and repaired.

The illuminated check engine light could also be due to a loose gas cap. Try tightening it and see if the light goes off. If not, then it's best to have it checked by a professional.