Why is the brake light of the car always on?

[Verona]

The reasons why the brake light of the car is always on are as follows: Lack of brake fluid: Brake fluid is an indispensable part of the automobile braking system. When the driver steps on the brake pedal, the force from the pedal is transmitted by the piston of the master cylinder through the brake fluid to the brake cylinders located at the wheels, causing the brake pads to contact the wheels and stop the vehicle from moving forward. Tail light bulb damage: The brake fluid cup is divided into an upper line and a lower line. When the brake fluid inside is below the lower line, this phenomenon is detected by the sensor next to the oil cup and reflected by the brake light on the dashboard. If the brake fluid decreases rapidly, it indicates that there is a leak in the braking system.