Does my Nissan have blind spot warning?

I’ve been having some real issues with my Ford Focus, and my cousin, who is a mechanic, has offered to look at it. Now, the thing about my cousin is this—he’s a bit of a loose cannon. Everything in his garage is covered in motor oil, and he has a tendency to toss wrenches at random, so you gotta be on your toes. That said—the guy knows cars, so I’m thinking I’ll let him take a look and see if he can fix mine, which will be much cheaper than taking it to an auto body shop. He did ask me where my OBD port is, and I’ve got no clue. Where is the OBD port location in a 2010 Ford Focus?

Is there a way to make your car sound louder in Forza Horizon 4? I feel like my cars are always pretty quiet and I’m not sure how to change that in the game. If this were real life I would just get a smaller muffler, but is that an option here?

I was coming home from work last night and noticed my headlight was out. What’s the easiest way to change the headlight bulb on a 2003 Honda Civic?