Audi 8T RS5 Front

Hey All,

I have been looking at purchasing a 2013-2015 Audi RS5. I have seen multiple models that look to have a camera on the right side of the car under the head light. I was wondering if anyone knew what it was and what it does.

One other question that I have is what are some things to specifically look at with these models when purchasing them. I have already read to look at the water pump and rotors and see if they have been replaced (I am looking at RS5's within the 40-55k mile range), but any more items that you guys recommend to look at would be greatly appreciated.

Thanks !