1. Press the brake pedal.
2. Press the start key to start the engine.
3. Run the engine to 90 degrees Celsius, and then turn off the engine.
4. Keep the engine at room temperature.
5. Open the front cover of the car.
6. Slowly unscrew the lid of the kettle and let out the high-pressure air inside.
7. Add antifreeze to the lid of the small kettle to the maximum extent to complete the operation.