1. Open the driving door of Nissan Sylphy.
2. Pull the hood switch of Nissan Sylphy.
3. Lift the hood of Nissan Sylphy.
4. Slowly unscrew the small lid of Nissan Sylphy's water tank and release the high-pressure gas inside.
5. Disconnect the oil return pipe of Nissan Sylphy to completely release the antifreeze of the cooling system.