What is the reason for the constant illumination of the brake light on Dongfeng Fengguang 580?

[Doris]

The constant illumination of the brake light on the Dongfeng Fengguang 580 indicates a potential fault in the system. It is necessary to use a car computer diagnostic tool at a repair shop, where the issue will be addressed based on the fault code. Below are the relevant details: 1. Cause of the fault: The force applied to the brake pedal during driving is transmitted through the brake master cylinder piston to the brake wheel cylinders at each wheel, causing the brake pads to contact the wheels and achieve the braking effect. A lack of brake fluid is often accompanied by noticeably insufficient braking force, and in severe cases, a complete loss of braking power. Insufficient brake fluid can cause the brake pedal to sink, keeping the brake switch continuously powered, which results in the brake light staying on. 2. Powertrain: The Fengguang 580 is equipped with two engines: a 1.8-liter naturally aspirated engine and a 1.5-liter turbocharged engine. The 1.8-liter naturally aspirated engine delivers 139 horsepower and a maximum torque of 187 N·m, featuring multi-point fuel injection technology and an aluminum cylinder head with a cast iron cylinder block.