Why do BYD's hazard lights suddenly flash automatically?

[LeColin]

The reason why BYD's hazard lights suddenly flash automatically is due to a malfunction in the control box, and it is necessary to check whether the hazard light relay is functioning properly. Below are common scenarios for using hazard lights: 1. Driving in foggy weather: Due to poor visibility in foggy conditions, it is advisable to not only turn on the hazard lights but also the fog lights to alert passing vehicles. 2. Vehicle breakdown or traffic accident: When a vehicle breaks down or is involved in a traffic accident on the road, hazard lights should be activated to warn other vehicles for safety. On highways, failure to use lights and set up warning signs as required after a vehicle breakdown or accident will result in a 12-point penalty.

[GiselleLynn]

Last time I was driving my BYD, the hazard lights suddenly started flashing on their own, leaving me scrambling on the roadside. After checking, I found the switch button near the steering wheel was stuck, probably due to frequent bumps or dust causing poor contact. Automatic activation of hazard lights is usually related to electrical issues, such as short circuits or control unit failures. In BYD models, the control module might be sensitive, and outdated software versions can easily trigger false alarms. It's recommended to pull over immediately, turn off the power, wait a few minutes, and then restart; if the lights still flash, don't push through—head to a repair shop to check the battery and fuses. Ignoring it long-term could lead to faster battery drain or even more serious system issues. That time, it cost me a few hundred bucks to fix, saving me a lot of trouble.

[OFaith]

I think the sudden automatic activation of the hazard lights is mostly caused by minor faults in the electrical system. If the switch component is worn out or the relay has issues, such as internal contact burning, it can keep the circuit energized and trigger the hazard lights. BYD vehicles have a high level of electronic integration, and if the battery management system experiences significant output fluctuations, it may inadvertently activate the warning lights. During inspection, try pressing the switch repeatedly to see if it resets, and check the fuse box for any blown fuses. For safety, avoid tampering with internal wiring yourself—seek a professional technician to scan for error codes using diagnostic tools. For prevention, keep the interior dry, regularly clean contact points, and reduce the risk of short circuits to extend component lifespan and minimize trips to the repair shop.

[VanLondon]

It's quite annoying when the BYD hazard lights flash automatically. That time I was driving in the city when the lights suddenly came on, distracting me and nearly causing an accident. The common causes are water ingress in the control panel or loose wiring due to vibration, triggering a short circuit. It's best to stop the car immediately and try to turn off the switch; if that doesn't work, the relay might be stuck. Restarting the vehicle sometimes helps reset the system. Ignoring it can mislead other drivers and increase the risk of accidents, so it's safer to quickly take it to a 4S shop for inspection. To prevent this, avoid parking in damp spots to reduce the chance of failure.