Where is the engine thermostat located on a 2001 Toyota Avalon 6 cylinder engine?

The engine thermostat on a 2001 Toyota Avalon with a 6-cylinder engine is located near the engine's water outlet, which is typically found at the end of the upper radiator hose. To access it, you will need to remove the hose and the thermostat housing, which is bolted to the engine. Make sure to allow the engine to cool before attempting to access the thermostat to prevent burns from hot coolant.