What Causes the Hazard Lights to Flash and Skid During Emergency Braking?
2 Answers
Emergency braking causing the hazard lights to flash and skid is due to the Emergency Stop Signal system, abbreviated as the ESS system. ESS System: This is a system that alerts vehicles behind during emergency braking at high speeds. When the vehicle speed exceeds 50km/h, the hazard lights automatically flash upon emergency braking to warn following vehicles to brake. Automatic Door Unlock System: Vehicles equipped with this system also feature an automatic door unlock function. When the hazard lights activate during emergency braking, the doors automatically unlock to prevent situations where doors cannot be opened in case of an accident, hindering quick rescue. If the car comes to a stop due to emergency braking, the hazard lights will continue to flash frequently to alert vehicles behind.
My car has had this situation too. The hazard lights automatically flashing during hard braking indicates the stability control system was triggered. Skidding is mainly caused by tires losing grip, possibly due to worn tread or water/sand on the road. When ABS activates, you'll hear a clicking sound and feel the brake pedal pulsating - don't release it. RWD cars are particularly prone to oversteer. Once during rain when I braked hard on an elevated curve, the rear felt like it was ice-skating and nearly swung sideways. I recommend regularly checking tread depth - replace immediately if below 3mm. In rain/snow, maintain at least 50% greater following distance for safety.
