*VERY IMPORTANT*
Make sure your jack fits under the car, with the cars suspension deflated. If need be drive up on some wood, wait for it to go back down, and try again. If you have a thick jack, when you do this work you will be in a bind if you can’t lower it all the way, and you can even damage the skirts. Next up, do not jack the car up with the battery connected, it will attempt to self level and that’ll mess up your operation and put air in the bags, making it harder. Disconnecting the battery also forces to car to re learn it’s ride height when you re connect, so you shouldn’t have to put air in the car the manual way. Always wait for the bags to leak down as much as possible before touching them, I don’t know what kind of pressure these operate at but I don’t want to find out. I’m no Hyundai tech but this is what worked for me, do some research and figure out what’ll work for you, this isn’t an official guide and I take no responsibility for any pickles you find yourself in. We bought low market cars, we have low market issues. That said I’m happy to experiment on my car a tickle to help you if you have any questions. Thanks for reading and good luck and always be safe!
Do not get under your car unless you have jackstands and it is properly secured. Do as I say, not as I do. I take dumb chances because I’m a dumb person. You are not.