How do you replace the coolant on a Renault scenic 2004?

To replace the coolant on a 2004 Renault Scenic, begin by ensuring the engine is cool. Locate the coolant reservoir and radiator drain plug, then remove the drain plug to allow old coolant to drain out completely. After draining, close the drain plug, mix the new coolant with water as per the manufacturer's instructions, and fill the reservoir to the appropriate level. Finally, run the engine to circulate the new coolant and check for leaks before closing the hood.