I’m not 100% sure, but I found this old thread that suggests that if it shows closed then the car has already had the issue fixed. Maybe a previous owner took care of it?
Since this website (from the top reply) is not for a specific car, my assumption is a closed recall means all affected cars must have been resolved.
However, if it were me I’d contact Hyundai with the details of the car and ask if there is anything outstanding. The recall notices had contact details.
I’m not 100% sure, but I found this old thread that suggests that if it shows closed then the car has already had the issue fixed. Maybe a previous owner took care of it?
https://www.hyundai-forums.com/threads/closed-campaigns-in-recall-section-of-myhyundai.500425/
Since this website (from the top reply) is not for a specific car, my assumption is a closed recall means all affected cars must have been resolved.
However, if it were me I’d contact Hyundai with the details of the car and ask if there is anything outstanding. The recall notices had contact details.