What is the reason why the hazard lights keep flashing and cannot be turned off?

[SanAdalynn]

Hazard lights keep flashing and cannot be turned off due to a problem with the control box. You need to check whether the hazard light relay is functioning properly. Use a multimeter to measure the output line of the hazard light relay to see if there is a 12v output. If there is intermittent output variation, it indicates normal operation. If there is no output or a constant 12v output, it means the hazard light relay is damaged and needs to be replaced with a new one. Usage of hazard lights: 1. When towing a faulty motor vehicle, both the towing vehicle and the towed vehicle should turn on the hazard warning flashers to indicate that the vehicle is in an abnormal state; 2. When temporarily parked on the road, turn on the hazard lights to alert other vehicles; 3. When forming a convoy permitted by traffic police, vehicles within the convoy should turn on their hazard lights.

[McSadie]

The hazard lights keep flashing and can't be turned off. As a veteran driver with twenty years of experience, I've seen this happen quite often. The most common reasons are a stuck switch or dust accumulation inside, which can cause malfunction over time. It could also be a faulty relay that keeps the circuit powered continuously. Poor contact or a short circuit in the wiring is another possibility, especially during rainy weather or on bumpy roads. This isn't safe—if the lights keep flashing on the highway, other drivers might think you're in an accident. It's best to pull over immediately and see if you can temporarily fix the issue by removing the fuse. If that doesn't work, head to a repair shop right away to have the entire lighting system checked. Don't let a small problem turn into a big one.

[RosalieLynn]

I recently encountered the issue of not being able to turn off the hazard lights, which is extremely annoying. Most likely, the switch button is broken and doesn't spring back after being pressed; or the anti-theft system is acting up, sometimes the car key remote triggers it endlessly. It could also be a blown fuse, and if not replaced in time, it keeps powering the flashing lights. If you want to DIY, first try disconnecting the battery for a few minutes and then reconnecting it—it might reset the system. However, if the lights flash for too long and drain the battery, you'll have to call a tow truck. Drive carefully; such faults are common in used cars, so remember to do regular maintenance.

[AniyahRose]

From my experience in car repair, the inability to turn off the hazard lights is usually caused by a stuck relay or a short circuit. The control module is located behind the vehicle's console, and once it malfunctions, it can't control the circuit. Alternatively, if the fuse blows but the current isn't completely cut off, the lights will keep flashing. Checking is simple: open the hood and inspect the corresponding fuse in the fuse box—replace it if it's blown. If that doesn't work, check for loose or corroded wiring. If the lights still flash, it's best to use a multimeter to test the circuit rather than forcing it, to avoid damaging other components.