When the ESC fault light illuminates, the vehicle can still be driven at low speed for a short distance to a repair shop, but aggressive manoeuvres such as sudden acceleration, hard braking, or sharp turns should be avoided. As an electronic stability control system, the main function of ESC is to enhance stability when the vehicle changes lanes quickly or goes around a bend. Common causes of faults include abnormal sensors, poor circuit connections, or issues with the control unit, which need to be diagnosed by reading fault codes with professional equipment. Although the basic driving function is not directly affected, the active safety performance will decrease, especially on slippery roads or in sudden situations, requiring extra caution. It is recommended that the car owner go to a formal repair facility for inspection and repair as soon as possible, and avoid disassembling parts themselves to prevent secondary damage. Regular maintenance can prevent such faults. If abnormal phenomena such as heavy steering or body shaking occur during driving, stop the vehicle immediately and contact professionals for handling.