Nissan security light on 5

https://star-wiki.win/index.php/Understanding_the_Nissan_Key_Recognition_Problem:_What_the_Key_Symbol_on_Your_Dashboard_Means

That glowing little icon on your Nissan's dashboard, shaped like a car with a key inside or just a key symbol, means the security system has detected something—maybe a door wasn't closed all the way, or the key fob battery is dying. It's usually not a big deal, just a nudge to double-check your doors and make sure everything's sealed tight before you drive off.