Thanks for the answers. I'll bet that it's what Robert defined because that's the area the sound comes from. And I was just talking about the car setting still, right after starting and while it was still in Park and pressing of the brakes, not the Park brake. Don't worry I hope to never accidently press the park brake while driving. I did find out though that if you press the park brake(while stopped) before you put the gears into Park your prius alarm start screaming at 'ya. Like Barbara's, mine doesn't click while in drive either. I guess I just never noticed it until a couple of weeks ago. Thanks alot for the replys.