Even though the ventilated front seats do currently function in my car; I find that they perform poorly when it comes to blowing cold air onto the seat. They do work, but the cold air being blown onto the seat is minimal and weak at best. This system is inferior in comparison to other systems I have experienced in my friend's vehicles "Ford and Lexus being the exact makes." For the most part I am extremely happy with my Sonata as I find it to be a well thought out, well designed, and very well rounded car. I must admit that I am a little surprised Hyundai has their ventilated seat (even with A/C turned on to a cold high setting) perform so poorly. I hope they can improve their ventilated seat function by using a better system or possibly switching to a better supplier in the near future.