What is the reason for the squeaking sound when the electronic handbrake is engaged?

[McAva]

This is a normal phenomenon. The electronic handbrake operates via an electric motor, so this unusual sound is simply the noise produced by the motor working. Below are specific details about the electronic handbrake: 1. Principle: The electronic handbrake is a technology that achieves vehicle parking braking through electronic control. Its working principle is similar to that of a mechanical handbrake, both essentially relying on the friction between the brake disc and brake pads to achieve the purpose of parking braking. The only difference is that the traditional mechanical handbrake lever has been replaced with an electronic button. 2. Function: The electronic handbrake, also known as the electronic parking brake system, combines the need for temporary braking during driving with the requirement for prolonged braking after parking, both achieved through electronic control. Additionally, it extends to the vehicle's auto-hold function, which allows the driver to avoid prolonged braking when the vehicle is parked, effectively preventing the vehicle from sliding.