Why Do the Hazard Lights Flash When Braking?

[LaDylan]

The hazard lights flashing when braking is a function of the vehicle's emergency stop signal system, abbreviated as "ESS". When the vehicle performs an emergency brake at a relatively high speed, this function activates, causing the hazard lights to flash rapidly to alert drivers behind. It is said to provide following vehicles with a precious 0.2-second reaction time. More related information is as follows: 1. When driving quickly over bumpy sections, such as speeding over speed bumps, the hazard lights may suddenly turn on and then off afterward. This happens because the vehicle's stability is compromised on rough roads, potentially triggering the ESP system. Since the ESP system is linked to the lighting system, when ESP activates, the system assumes the vehicle is in a dangerous state, thus triggering the hazard lights to warn trailing vehicles. 2. Bumpy roads may cause slight movement of the tailgate, leading the tailgate lock sensor to mistakenly detect the tailgate as open, activating the hazard lights. This is similar to how the hazard lights briefly flash when opening a door during normal operation. Typically, the lights will automatically turn off once the vehicle stabilizes.