Mine did this exact thing last night on the way to work. I went into work for about 5 hours and when I came back out, all was normal. I will continue to monitor and take her in if it continues to happen. I have a 2013 3.8 Track with about 4,000 miles, purchased in Oct.Jonahan,
I had a very similar experience. My one week old 2013 Genesis Coupe had a temporary malfunction as well. The first symptom was the flashing seat belt warning and chime. Then I noticed that the "auto" setting in the head lights was not working. It was dark outside but the car lights were not coming on. When I switched to the head light on position on the light switch the lights came on. The lights indicator section of the instrument panel (including the door open indicator) was not working. Taking the seat belt on and off on both the passenger and driver side didn't make any difference. Turning the ignition key completely off and back on didn't help the situation either.
Needless to say I was quite bummed out about my brand new car developing malfunctions of this type. When I got home I realized that the trunk open switch didn't work either. At this time I was suspecting a blown fuse. However, after parking the car for about an hour I went back to check again and found that everything was back to normal! Its been two days and the issue has not re-surfaced again.
I'm not sure what to make of this. Maybe, there is a fuse that is not making good contact...
About an hour later