Where is the thermostat on a 2003 Hyundai xg350?

On a 2003 Hyundai XG350, the thermostat is located in the engine compartment, specifically on the engine block near the outlet of the upper radiator hose. To access it, you typically need to remove the upper radiator hose and the thermostat housing, which is secured by bolts. Make sure to allow the engine to cool before attempting to service the thermostat to avoid burns or injuries.