How do you change thermostat 2002 hyhundai accent?

To change the thermostat on a 2002 Hyundai Accent, first, ensure the engine is cool and disconnect the negative battery cable. Drain the coolant from the radiator and remove the hoses connected to the thermostat housing. Unscrew the thermostat housing, take out the old thermostat, and replace it with the new one, ensuring the gasket is in place. Reassemble everything, refill the coolant, and check for leaks.