The water temperature of the fault light of modern 35 engine rises slowly.
The thermostat is broken. The temperature controller is damaged, which leads to the failure light, the temperature controller cannot be turned off, or the cooling fan is in normal rotation, and the water temperature rises slowly. Hyundai is an automobile brand owned by Hyundai Motor Company, one of the top 500 automobiles in the world. Its main models are Sonata, Elantra, Santa Fe and Tucson.