I've had this happen 3 times since new. I took a video of it, sent it to my friend (who's a Subie Tech) and he said he's not seen it before. Same thing... On the dash, Park will blink, Brake will be solid and Parking Brake light doesn't show that it's lit. I pull the brake switch and it engages slightly, like a fast sound. Push the brake button down and nothing. I have to restart the car and then push the brake button down and it works. - I parked my car in the garage, got out, and when I was opening the door to my house, I heard the Parking Brake engage on it's own... Stupid F'ing electronics...