Why is the parking brake light always on?

[KimberlyFitz]

There are two possible situations: 1. The brake light on the dashboard is on: The brake pads are worn to the limit; The brake fluid is insufficient; The warning circuit is short-circuited; The ABS pump is damaged; The handbrake is not released or the switch is short-circuited. 2. The brake light at the rear of the car is on: The brake light switch on the brake pedal is damaged; The brake light circuit is short-circuited. Additional information: The brake light is generally installed at the rear of the vehicle, with the main color being red, to enhance the penetration of the light source, so that vehicles behind can easily detect the braking of the vehicle in front even in low visibility conditions, helping to prevent rear-end collisions. In simple vehicle models, the power passes through a fuse to the brake switch. When the brake pedal is pressed for braking, the switch connects, sending electricity to the two brake lights and one high-mounted brake light, forming a circuit through the negative line connected to the vehicle body.