On our 2017 S 100D and 2018 X 100D, so far, we haven't been able to get AutoPark to work.
When the P shows up, it's usually at places where there aren't parking spaces, such as when stopped at a traffic light or when we're pulling into our driveway, and the P is displayed when we pass the sidewalk in front of our house.
And when we find parking spaces that we want to use, the P hasn't shown up...