There are several threads on this site dealing with LED Headlight conversion. Below are a couple. Refer to these to see what I've used, as well as what others have used.What did you do to upgrade to the aftermarket LEDs?
I've got the Ultimate package which was a full load at the time and includes heated steering wheel. In addition to gorj's list I'd like to add front parking sensors, adjustable headrest angle, ventilated seats, 2 position memory driver's seat with exit mode, storage net behind both front seats not just passenger side, self parking & tilting side mirrors, improved full EV mode and true adjusted mileage display in both ICE and EV modes.I have yet to understand Hyundai's marketing strategy concerning the Ioniq. I have the ultimate and yet I still have a wish list: like power passenger seat, heated steering wheel, remote hatch, remote start from fob - the BlueLink is a pain, full window (no bar) with wiper/washer in the hatch, electric parking brake, 360 view anytime, lighted threshold plates
Gotcha, redundant.I would add the vented seats, along with a storage net behind the driver's seat, and powered steering wheel adjustment tied to the rear view mirrors with the memory seats. Front sensors would be nice, but with the 360 view they would be an extra safety feature.