How do you change coolant on 1998 Mercedes ML-320?

To change the coolant on a 1998 Mercedes ML-320, first ensure the engine is cool. Open the hood and locate the coolant reservoir; drain the existing coolant by removing the lower radiator hose or the drain plug if available. Once drained, flush the system with water until it runs clear, then replace the drain plug or reconnect the hose. Finally, refill the system with a 50/50 mixture of Mercedes-approved coolant and distilled water, and run the engine to help circulate the new coolant, checking for any leaks.