Will the hazard lights break if flashing for 12 hours?

[DiCharles]

No, they won't break. The hazard lights can flash for a full day and night when the car is turned off, as car batteries have large capacity while hazard lights consume relatively low power. Relevant explanations are as follows: Check the control box: If hazard lights suddenly start flashing automatically, it's likely due to a control box issue. You need to check whether the hazard light relay is functioning properly - simply use a multimeter to test the output line of the hazard light relay to see if there's 12v output. Replacement: If there's intermittent output variation, it indicates normal operation. If there's no output or constant 12v output, it means the hazard light relay is damaged and needs replacement with a new one.

[CarlosFitz]

Last time I forgot to turn off the hazard lights for an entire night, and the next day I found them still on but surprisingly undamaged. Generally speaking, flashing hazard lights for 12 hours won't necessarily burn them out immediately—it depends on the bulb type. Modern cars mostly use LED bulbs, which dissipate heat well and are more durable, theoretically lasting longer. Older cars with halogen bulbs are prone to overheating or filament burnout. I've checked the circuit—the hazard lights have fuse protection that melts in case of overload to prevent short circuits, so the actual risk of failure isn't too high. However, prolonged flashing accelerates battery drain, especially with older batteries that might need replacement if depleted. I recommend testing the lights and battery afterward—if everything's fine, no worries. Still, developing a habit of shorter usage is more worry-free.

[LeMatteo]

As an experienced car owner, I once carelessly left the hazard lights flashing all day, but nothing happened. However, this isn't the norm—if your car is over five years old, aging bulbs or loose wiring can easily cause issues, such as oxidized lamp sockets leading to poor contact or blown fuses. Modern cars are designed with safety mechanisms, but if the battery is old, it might struggle to start after 12 hours of discharge, affecting daily use. I recommend turning off the lights promptly and checking the car's condition, ideally using a multimeter to test the voltage. Always remember to manually turn off the lights when parking. These small oversights may not always lead to major repairs, but the cumulative costs can be annoying—don't underestimate them.

[IsaacLee]

Leaving hazard lights on for 12 hours can indeed cause damage! After experiencing circuit issues firsthand, I've learned that prolonged bulb use can burn out filaments, while continuous heat may melt fuses or cause short circuits, leading to complete warning system failure. This poses higher risks for older vehicles, though newer cars' circuit protection isn't foolproof either. I recommend immediately checking light functionality after turning off the engine, and seeking repairs if any abnormalities are found to prevent sudden failure during night driving. Developing proper switching habits is crucial.