Nissan key not recognized 2

https://carkeysymbolnissanbase.brightsora.com/posts/what-the-car-with-key-symbol-nissan-means-and-how-to-troubleshoot-it

You're trying to start your Nissan, but the dashboard flashes 'key not recognized' and the engine won't turn over. It's frustrating when the fob battery seems fine, but the car just won't communicate with it. Sometimes, reprogramming the key by holding it near the start button for a few seconds does the trick, or you might need to replace the key fob's internal battery or try your spare key to see if it's a chip issue.