The treatment methods of frozen water tank are: 1. Pour warm water into the water tank, not boiling water, otherwise the water pipe will be damaged due to thermal expansion and cold contraction, which will increase the temperature in the water tank and accelerate the melting of ice; 2. Pour alcohol into the water tank along the water to accelerate the melting of ice; 3. Use the engine water temperature to thaw. When the temperature of the water thermometer rises, turn on the car air conditioner, turn on the warm air switch, and set the air outlet direction to blow the front windshield. Automobile water tank, also known as radiator, is the main part of automobile cooling system, and its function is to dissipate heat. The cooling water absorbs heat in the water jacket, flows to the radiator and dissipates heat, and then returns to the water jacket for circulation, thus realizing temperature regulation.