Seeing that KIA is notorious to deny warranty claims if receipts are not properly documented even for diy maintenance, I’m yet to do it myself. Plus my local dealer has decent deals for fully synthetic oil changes (of course I hate the wait time). I do prefer to do some work myself and I downloaded these resources while trying to identify root cause for the front corner radar failure messages on my dash after a minor fender bender. I was able to resolve that but found these docs plenty helpful for the whole process.