My son's new to him(2009) sport trac xlt now shows the warning light "check brakes". It wasn't on when he bought it tuesday and we drove it home. It was owned by an elderly man. My son said when he moved the pickup in our driveway, he put the parking brake on and released it to be sure it worked and thats when he noticed the warning light come on. It stays on. The folks that sold it to us replace the brakes over the weekend so it has new brakes. I'm thinking maybe its a brake switch? My son said he checked behind the parking brake and the one behind it moves in and out, but the one for the main stopping brake seems stuck? I don't know much about mechanical things, but I've used youtube before to fix small things on my old caravan and my washer and dryer. LOL So if there is a step by step for us to find and follow, I'd appreciate it.