For owners of modern Nissan and Infiniti vehicles, the check engine light can feel like a summons to the dealership and a potential bill for hundreds of dollars. However, for those in the know, a powerful alternative exists: software. But what does it mean when a system or feature is "Verified" to work with NDS III, and why should this matter to you? This article is your comprehensive guide to understanding, installing, and using this dealer-level diagnostic tool to save money, perform advanced maintenance, and truly understand your car.