A parking pass will be needed beginning Feb 1, 2017 to see the sunrise at Haleakala. The cost is $1.50 and reservations can be made at recreation.gov in addition to the $20 that it already costs for each car to enter the national park. The ticket website launched a few days ago, and travelers can buy parking passes up to 60 days in advance.
The parking pass is good for three days between 3-7am, the most popular hours to arrive to hike and/or see the sunrise. Cars arriving after 7am do not need a parking pass; while you will miss the sunrise you can still hike and see the volcanic crater.