So my '13 versa SV started having this rattling noise that happens when I'm braking and sometimes when I'm in park. Inside of the car it comes from the driver's side vent area, and when I pop the hood it sounds like it's coming from the cylinders. There's also this very quiet squeaking sound (similar to that of a tennis shoe on a gym floor) whenever I accelerate after coasting. I'm dropping it off overnight at the dealership on Monday. Any ideas to what it could be? anything I should suggest?