1. Cushion damage: The water circulation system fails, resulting in abnormal water circulation, so that the water temperature inside the engine is too high to vaporize, forming high-pressure steam to break through the cylinder gasket and enter the engine, resulting in water leakage in the engine compartment. Go to the 4s shop for professional maintenance in time.

2. Loose joints: Too loose joints will lead to slipping and directly lead to wrong teeth; Too tight will increase tension, and high load will easily break, resulting in water leakage in the engine compartment. It is recommended to go to the repair shop to check and repair immediately.

3, water pipe burst: when there is no antifreeze in winter, cold water will crack after freezing, first from the car water pipe; The water tank has not been cleaned or replaced for a long time, resulting in slow perforation under the circulating pressure of the water pump. Replace the water pipe in time or go to the 4s shop for professional maintenance.