I phone 12 Bluetooth not connecting to on 2012 Hyundai Sonata Limited Turbo, what now?

I remember having this problem when I first upgraded from I phone 4s to 6 s Plus, it took forever to get an answer as Apple blamed Hyundai and vise versa. Eventually I got it to work, however I seem to remember that I had to go to the dealership. Now I just upgraded from I phone 10 Xr to 12 / 2020 and my Sonata doesn’t recognize the phone or the phone doesn’t recognize the car. I tried pretty much everything but it just doesn’t work. Did anybody here get their I phone 12 to work with the 2012 Sonata Limited yet? If so could you please tell me how you did it . Thanks in advance !