* Parking Brake Engaged: This is the most common reason. If the parking brake (also called the emergency brake or handbrake) is engaged, the light will be on. This is a reminder to release the brake before driving. Sometimes, it might not fully disengage, causing the light to remain on even when driving.
* Low Brake Fluid: A low brake fluid level triggers the light. This is a serious issue indicating a potential brake system leak. Do not drive the car if this light is on due to low brake fluid. Have the system inspected and repaired immediately.
* Brake System Malfunction: The light can also indicate a problem within the braking system itself, such as a faulty brake switch, sensor, or other component. This could be anything from a worn brake pad sensor to a more serious mechanical issue.
* ABS (Anti-lock Braking System) Problem: Modern vehicles often have an integrated system. If there's a problem with the ABS system, the brake warning light will often illuminate.
If the emergency brake light is on while the car is running, you should stop driving as soon as it is safe to do so. If the problem is not the parking brake being engaged, there's a potentially serious problem with your braking system that requires immediate professional attention. Driving with a brake warning light on is dangerous.
