When a fault occurs in the vehicle's ESC system, first remain calm and immediately pull over to ensure safety. Then, you may attempt to turn off the engine, inspect whether the brake pedal switch wiring is loose and secure it properly, before restarting the engine to observe the fault indicator status. Should the issue persist, potential complex causes such as sensor malfunctions (e.g., wheel speed sensor, steering angle sensor), control unit (ECU) issues, or wiring faults should be considered. In such cases, avoid aggressive driving manoeuvres and have the vehicle transported to an authorised dealership or professional repair facility promptly. Technicians will employ specialized diagnostic equipment to retrieve fault codes, with subsequent repairs potentially involving sensor cleaning/replacement, ECU software updates or hardware replacement, or wiring repairs. For routine maintenance, it is advisable to periodically verify sensor cleanliness, refrain from unprofessional electrical modifications, and monitor brake system condition to minimize ESC failure risks. Note that in certain vehicle models, the ESC system is deeply integrated with active safety features, meaning faults could compromise vehicle stability control - making prompt professional servicing essential.
