Yes! Hazard lights can drain the battery of your car. ... Meanwhile when your car is running, the alternator powers the electronics. Also, the hazard lights are designed to use minimal power, to buffer the drain on your battery thus, eventually your hazard lights can and will drain your battery completely.

How long does it take for hazard lights to drain battery?

Emergency flashers drain the battery in 5-10 minutes.

Do hazard lights stay on when car is off?

The lights staying on after the car has been shut off suggests you may have a corrosion issue in one of the sockets or potentially a shorted out turn signal switch assembly, which is known to cause this to happen on many cars.