Heater not working properly. Took my 2016 Sorento to the dealer due to cold air coming out of vents. Was told everything is working properly however I have to turn the temperature up to past 80 before any warm or hot air will come out of the air vents.
Under warranty. If the dealer isn’t solving the problem, try another Kia dealer. Or contact Kia. The contact number is in your owners manual.