Audi=No fault code, no idea
Audi dont expect people buying a premium make car to be able to see where they are going at night....they expect you to be tone deaf so you get a crap little stereo..know exactly where you are going so you will not need Satnav or even a map light. You will not require cruise or auto lights because God gave you hands and eyes. A handy function you do get is...water pour's in when you open the window if its raining. This is to tell you to put your wipers on so you dont need auto wipers. You will get a multi ? function steering wheel with just 2 working functions if you are lucky. It only has two because that the minimum they could fit and still call it multi.
But dont be put off !! for an extra 3-4 thousand pounds for being a bloody nuisance.. you can have all this stuff that should have been fitted in the first place.