Why is the handbrake red light always on?

[Nicole]

The reasons for the constant illumination of the handbrake light include the handbrake not being fully released, the brake fluid level being below the safety line, or a false alarm. Definition of the handbrake: The professional term for the handbrake is the auxiliary brake, which uses a steel wire cable connected to the rear brake shoes to brake the car. Long-term use of the handbrake can cause plastic deformation of the steel wire. Since this deformation is irreversible, prolonged use will reduce its effectiveness, and the handbrake's travel distance will also increase. Countermeasures: For such occasional alerts, simply releasing the handbrake fully or adding an appropriate amount of brake fluid will suffice. If the handbrake light is on and accompanied by uneven braking, it may be due to inconsistent wear of the brake pads or uneven force distribution from the brake caliper. In such cases, immediate inspection and repair are necessary to avoid compromising driving safety.