I discovered one today:
The passenger seat belt alarm dinging endlessly - AFTER they got out and I put it in park...both 60 seconds ago! I had to fasten the seat belt then disconnect it again. It silenced the alarm, but still showed the light for about 10 seconds, then shut off.
If it's in park, no alarm. Period! Hyundai, are you listening?
Aside from that, the only annoyance I have is the freezing temperature warning ding at 39°. I'm pretty sure nothing is going to freeze at 39°...
Everything else was done right. That's why I bought it.