On our 2008, there is 1 external hex that requires an internal hex tool to adjust ours. It is white and vertical right behind the radiator core support. I used an E8 ("internal torx") socket on mine, but it only adjusts up and down aim.
I tried to find out if there was a way to adjust left/right aim, but I didn't find it. The manual says to leave it to the professionals, (as if to say "you're not worthy of having the information"). Good luck with it. Ideally, in the old days, you could take out only the mounting screws and it didn't mess with aim.
Rob in AZ