[mrmr256]

You don't need to change the filter in these cars, unless there's something wrong with it. Our transmissions are designed as a sealed system, so as far as regular maintenance goes, all it needs is a drain/refill.

This should help. The process used here is exactly the same for our cars.
http://www.hyundai-forums.com/222-y...177-atf-drain-fill-pics-those-interested.html