I had the same problem. The crankshaft sensor has to be replaced. Before taking your vehicle to kia make sure to test to see if your battery is fully operational. Kia will try to charge you for a new battery when they change that part under warranty. The due pick up 25% of the battery cost. They may even change your timing belt along with another. If so, ask what other belts do they have to remove in that area and purchase new ones your self since they have the vehicle torn down at that point.