![]() ![]() This is especially helpful as motorists and drivers are often unaware that their rear brake lights aren’t working, which can help prevent rear-end collisions. If a brake bulb goes out or dims, it may cause the brake warning light to turn on. Some car computers monitor the rear brake light bulb, which could be a single red light bulb or even an LED bulb array. If they malfunction, they could trigger your dashboard brake light to turn on. Throughout your vehicle, there are many sensors linked to the brake system, such as the sensor in your handbrake, master cylinder, or ABS sensor. When this happens, have an auto professional review your ABS codes to determine the issue. The causes can range from an electrical malfunction to something as simple as a dirty wheel speed sensor. Problems with the antilock brake system can trigger both the brake light and ABS warning light (if it has one) to turn on. Most vehicles with an antilock brake system (ABS) have an ABS warning light. In some cars, once the brake pads are too worn, a sensor wire contacts the rotor and forces the brake light (or brake pad warning light) to light up. Worn brake pads can also cause a drop in brake fluid level as the caliper pistons have to reach further to contact the rotor, which can also trigger your brake warning light. Low fluid levels shouldn’t be taken lightly as it might indicate a leak in the brake line, which will need addressing ASAP. If the fluid levels are below the minimum threshold, the sensor will trigger the brake light to illuminate. Low Brake Fluid LevelsĪ sensor in the master cylinder monitors the brake fluid level in the system. These increased temperatures can also speed up hydraulic fluid degradation and reduce the efficiency of your braking system. Doing so will overheat your brakes, accelerate brake shoe and brake pad wear, and could cause a brake lockup. If you leave it as it is, you’ll be driving around with activated parking brakes. This usually happens when you don’t fully disengage the vehicle handbrake, and the solution is to simply disengage it completely. If the parking brake or handbrake is engaged, the parking brake sensor prompts the brake warning light to illuminate. This is the most common reason why your brake light is on. Here are the six most common culprits why your warning light is on: 1. There are plenty of reasons why the brake warning light comes on, including bad wiring, faulty brake sensors, or a blown LED bulb. Brake pad warning light: This dashboard light is a circle with outer dashed lines.īut why is your dashboard brake light on in the first place? 6 Reasons the Dashboard Brake Light Is On.ABS warning light: This one’s easily recognizable as it spells out “ABS.”.Parking brake light: This one is usually a “P” in a circle.Sometimes the brake warning light comes on alongside other brake related dashboard lights, like the: The second one is usually a sign that something’s wrong with your brakes. The first set functions as a signal to tell other motorists and drivers that your vehicle is slowing down or coming to a stop. The light on the dashboard with an exclamation point (“!”) inside of a circle or the words “BRAKE” spelled out.These typically comprise of led lights, halogen or xenon bulbs. The three red lights that are part of your vehicle’s rear light assembly come on when you hit the brakes. ![]()
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