Bad brakes display warning signs for impending brake maintenance. For example, if your brakes squeal or grind when in use, then your brake pads may be worn and require replacements. If your vehicle pulls to one side when braking, then this may point to worn brakes, a malfunctioning caliper, or low brake fluid in the brake lines. If your brake pedal presses down too easily—also known as “spongy” brakes—then this may be an indication of too much air in the hydraulic brake lines. Sometimes, your vehicle's electronic diagnostic system will alert you to a potential brake issue by a service indicator light on the dashboard. While these are only some of the most common signs of potential problems with your vehicle's brake system, noticing these signs of faulty brakes and seeking out a brake service can save you money down the line.