If your car’s dash has the brake light on, there could be a few reasons why. When the brake light is on, it means there may be a problem with the brakes, like low brake fluid, broken brake system parts, leaking brake fluid, or a parking brake left on. If the brake light turns on, you do not want to drive the car in case the brakes stop working. The tips in this article and video can help you inspect the system yourself and possibly fix it without having to bring it to a professional.