The water leak in the car's water tank is not a big problem, but the water tank is always short of water, which really makes the owner feel a headache. In fact, there are three main reasons for the water tank leaking, which are as follows:
  
1. The rubber ball valve is broken, the seal is not strict, and there is water leakage. Just replace it.

2. The water tank gasket is aging, the seal is not strict, and needs to be replaced.

3. The connection between the spherical float and the water inlet switch of the water tank is loose, the float is in place and the switch is not closed, so that the water does not stop, and the water flows out from the upright drain pipe after the water is full, as long as the connection of the float and the water valve switch is tightened.

If your car's water tank is always leaking, check to see if it is for these reasons. If not, go to the 4S shop for repair.