Welcome. Did you do it like this.
Removing And Installing/Replacing Coolant Expansion Tank Warning: Danger of scalding! Only perform this work after engine has cooled down.Follow instructions for working on cooling system.Remove intake filter housing.Remove front underbody protection.Drain coolant from radiator.
Venting Cooling System And Checking For Leaks Warning:Danger of scalding! Only perform these tasks on an engine that has cooled down. Check cooling system for leaks. Top up coolant.