Most modern vehicles come with brake warning lights that appear on your dash. One is your Antilock Braking System (ABS) light and the other is your brake system warning light. Your brake light won't always come on when there is an issue — it's also the light that appears on your dash when your parking brake is engaged. But if you're seeing a brake warning light and your parking brake isn't engaged, it's time to have a brake expert take a look at your system to diagnose your issues.