Hi there! Our 2004 Kia Sedona overheated and stopped working the other day, and had to be towed to a Kia dealership. They say that the rear heater tubes needed to be replaced. they say that it is going to cost about $850 to fix with $200 going to parts and 6 hours of labor totaling almost $600. Then tax. Not to mention we're paying $120 for the tow. First of all does this seem like an extremely high amount of money for labor? Does it really take 6 hours to fix these heater tubes? Secondly, what causes something like this to happen? The guy said it was because of salt on the roads. We live in Chicago... how are we supposed to avoid that in the winter time? Is this a design flaw, or what? Also, our minivan is 4,000 miles past 60K, but only 4.5 years old. What is the deal with the Kia 10-year warrantee? Please help! I think somehow we're getting whacked! Thank you! I'm so glad a site like this exists!