Nissan Immobilizer System Daily

What Does the Key Symbol on Your Nissan Dashboard Mean? If you own a Nissan and have noticed a small car-with-key symbol glowing amber or red on your dashboard, you are not alone. That icon is directly tied to the Nissan immobilizer system, a security feature designed to prevent vehicle theft by blocking the engine start interlock unless the correct transponder key is present. This article explains how that system works, why the warning light comes on, and what you can do