What does it indicate if the parking brake light is illuminated?

The illumination of the parking brake light serves as an important indicator that the parking brake is engaged. This warning light is typically designed to alert the driver that the parking brake has not been fully released and is still activated. When the parking brake is applied, it is crucial for safety reasons, particularly when the vehicle is stationary, to prevent it from rolling.

Additionally, if the parking brake light stays on even after the brake is disengaged, it can signify an issue with the brake system, like a malfunction of the brake system or low brake fluid levels. However, the primary function of this light is to inform the driver about the engagement status of the parking brake itself. Therefore, whenever this light is illuminated, it is essential to check the parking brake before driving to ensure safe operation.