The Nissan security indicator light is a small red blinking LED on your dashboard that shows your vehicle's anti-theft system is active. It flashes when the engine is off and the car is locked, providing a visual deterrent to potential thieves. Some owners find its persistent glow slightly annoying at night, but it's a small price for peace of mind. If it stays solid or behaves unusually, it might signal a system issue worth checking. Nissan security indicator light 8