Older cars had a little lever that would adjust the beam. Newer/high-end cars have an electronic adjustment controlled via a configuration option.
But, I've been told that in the case of Xenon headlights, there is no need for adjustment because the beam is flat. I've googled a bit and found two articles that mention this, but I am not sure if this is true for the 500x.
I added Xenons as an option when I bought my car, but never bothered to look at the shape of the beam.