1. Park the vehicle on a level surface and allow the engine to cool down completely.
2. Open the hood of the vehicle.
3. Locate the radiator drain plug. It is usually a plastic or metal plug located at the bottom of the radiator.
4. Place a drain pan under the radiator drain plug.
5. Use a wrench to loosen the radiator drain plug.
6. Allow the radiator fluid to drain completely into the drain pan.
7. Once the radiator is empty, close the drain plug.
8. Refill the radiator with the recommended type and amount of coolant.
9. Start the engine and let it run for a few minutes to circulate the coolant.
10. Check the coolant level and add more if necessary.
