I was backing out of a parking lot on a downhill when the brakes and steering wheel locked on me. I almost crashed into another car. Thankfully, it saw me and began backing up. To fix it, I restarted the car (turned the car off then back on again) and was able to stop (brake) the car. It freaked me out and almost caused a crash, but was the only time it happened. My boyfriend crashed the car a few months later :P