Remove the radiator and expansion tank caps.
Disconnect the outlet hose from the radiator and remove the radiator drain plug, placing a container under the radiator if necessary.
After draining the coolant, connect the drain hose to the radiator, replacing the clamp, and tighten the drain plug of the radiator and the plug of the expansion tank.
Fill the system with coolant through the radiator filler neck.
Start and warm up the engine until the thermostat opens to remove air pockets.
Add fluid to the system if the level drops.
Check the fluid level, which should reach the lower edge of the radiator neck. If the level is low and there are no signs of leakage in the system, add coolant. Close the radiator cap.