To determine if the ESC system is faulty, first observe the status of the ESC indicator light on the dashboard. Attempt to restart the engine or press the ESC switch to eliminate false alarms; if the warning persists, further inspection is required. Common causes include abnormal tyre pressure, insufficient brake fluid level, or contamination/damage to wheel speed sensors, which can be identified through visual inspection and basic procedures like cleaning sensor surfaces with a soft cloth or verifying wiring connections. Critical faults such as signal accuracy deviations or control module malfunctions require precise diagnosis through OBD diagnostic tools to retrieve fault codes. Furthermore, if the vehicle exhibits unstable steering, loss of skid control, or abnormal brake pedal response during operation, these may indicate ESC failure - immediately stop the vehicle and seek professional repair. Routine maintenance should include regular checks of brake pad thickness (minimum 3mm recommended) and brake fluid condition to mitigate secondary failure risks. Importantly, ESC faults involve complex integration of electronic and mechanical systems. If initial troubleshooting fails to resolve the issue, promptly visit an authorised service centre for professional diagnostic equipment to prevent potential safety hazards from delayed repairs.
