Hey man,
Looks like we're the only two that have experienced this. I'm wondering if we have the same issue.
I bought my 15 5.0 Ultimate about 5 weeks ago. After 2-3 weeks and starting to drive it harder (corner harder) I noticed what at first I thought was some slop in the front end. Then one time, I was mid-corner and unwinding the
wheel with one hand and as the pressure from my hand transferred from one half of the
wheel to the other, the whole steering
wheel "popped" to the newly loaded side. After that, when I parked I put both hand behind the
wheel and could lightly pull toward myself on either side and watch the whole
wheel and column (columns switches and covers) move side to side (sort of rock back and forth) about 1-2mm.
At the 3 week mark, I took it in for my first dealer experience (to have them look at steering column issue, pano-roof seal issue, illuminated sill plate that just wouldn't light [first world problems, right...?] and what I thought was a bluelink issue) and while the SA was nice enough, they weren't very helpful. After having the car all day (and not furnishing me a loaner) Bluelink was fine (and I haven't had the frozen connection issue since), the roof seal was "normal" (even though the two used G80s they had on the lot didn't look all rolled under like mine was), they ordered a replacement sill plate to fix that and the steering column "moved due to the design of the column and the haptic feedback from lane departure warning system."
It seemed to get worse and better, maybe based on ambient temp, but it was definitely not right. Kinda unsafe when you consider that the collapsible column and the airbag hanging from the end of it are two of the most important pieces of safety equipment on the car.
So I called a dealer 20 miles away, told them I was having trouble getting something diagnosed in my town and wondered if they'd take a look. I dropped her off this morning (at a dealer that actually sells the Genesis brand in a brand new and very nice facility) and when the service adviser stepped out with me to see the problem, he immediately said, "Yeah, that's definitely not right."
They were able to get me a (base, ugh...) Sonata to drive in the meantime and said he'd let me know what they figured out and how long the parts (assuming they'd have to order something) would take to come in. Hopefully this won't turn into a huge issue and just be an easy warranty replacement of one part that fixes the issue. I have just under 50k miles and the in-service date was mid-October 2014, so I only have 10k miles and 4 months left of the bumper to bumper warranty. Hopefully when it expires I'll have already addressed any issues that she has and she'll be good to me for another 40-50k miles.