The illumination of the ESC warning light indicates an abnormality in the vehicle's Electronic Stability Control system. Normally, the ESC light will briefly illuminate for 4 seconds when the vehicle is started and then turn off. If it remains on or flashes continuously, it indicates a system fault, which may be caused by an abnormal ABS pump, dirty sensors, short-circuited wiring, or software false alarms. At this point, the electronic stability function will be disabled, and there is an increased risk of loss of control, especially in rainy weather or during sharp turns. It is best to immediately reduce speed, avoid sudden acceleration/braking, and prioritize contacting an authorised service centre to diagnose the issue using a dedicated diagnostic tool. Some vehicle models allow manual deactivation of ESC (e.g., during off-road driving or when installing snow chains), but it will automatically reactivate when the speed exceeds 80 km/h. Regularly checking the cleanliness of wheel speed sensors and the condition of brake fluid during routine maintenance can reduce the probability of malfunctions. If the warning light flashes intermittently, it is usually a normal system intervention (e.g., detecting tyre slippage), and there is no need for excessive concern.
