What does the P light on the car mean?

[Landon]

The P light on the car indicates that the parking brake is engaged. You can check whether the handbrake or electronic brake is activated. The parking brake, commonly known as the handbrake, provides resistance to prevent the car from rolling when parked. It functions as the parking gear in automatic transmissions, locking the drive shaft and rear wheels. The electronic parking brake is a technology that achieves parking braking through electronic control. Its working principle is the same as that of a mechanical handbrake, both utilizing the friction generated between the brake disc and brake pads to control parking braking. The only difference is that the control method has changed from a mechanical handbrake lever to an electronic button.