I've noticed that over the last couple of weeks, my brake pedal has been squeaking pretty readily whenever I brake past the halfway point. Any thoughts on a solution? Thinking I'd try to get in there with some lubricant, but if the brakes are like other cars I've owned, the moving parts run into the brake booster. Not sure if I want to mess with that, but also feel foolish bringing the car into the dealer for such minor issue.