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Nissan Spare Keys A spare key can prevent you from being locked out. You must make sure the spare key is programmed to work with your vehicle. Modern Nissan keys provide security and convenience thanks to their modern technology. Like all other technologies, they are prone to damage. Programming Nissan is renowned for introducing cutting-edge technology into its vehicles. One of the most popular is the Intelligent Key. This feature is more than just a lock and unlock system. It also o