Same thing here with my 2021 Elantra SEL, with only 10k mi. In fact, I just joined the forum today and started a new post. No power steering, Driver Awareness System has been disabled. Like others have said, all was fine when I went to a store, came out about 10 minutes later and when I turned the car on, the display started showing 'Check this, check that....' (mostly safety related), no power steering, outside temp not displayed, and master warning triangle near bottom of screen to the right of the MPG display. But at least there's no check engine or fluids warnings. Fuel level indicator, speedometer/tach, lights are working. Was able to drive home with no problems other than stiff steering. Brakes are fine. Took it for a test drive after checking all fluids, fuses, etc and seems fine except for the stiffer steering. Held it at 70 mph for a while and was okay. It's Sunday, so couldn't call dealership. Have to work tomorrow but am off Tues, so I'll call dealership tomorrow morning, drive the 5 mi to work and back, and take it in Tues morning. Who knows, maybe it'll be mysteriously 'fixed' when I start it in the morning.
BTW, at only 7k mi, the transmission had to be replaced on this car. So not a happy camper with Hyundai. When the lease is up next year, I'll definitely be looking elsewhere. Most likely Toyota.