Where is the radiator drain on a 2003 Hyundai Sonata?

On a 2003 Hyundai Sonata, the radiator drain is typically located at the bottom of the radiator on the driver's side. It is a small petcock or drain valve that can be turned to release coolant. Ensure the engine is cool before attempting to drain the radiator to avoid burns or injury. Always have a container ready to catch the coolant when you open the drain.