2. Turn on the drain switch to drain the original water in the water tank at the bottom of the water tank.
3. After drainage, when installing the drainage switch, apply an appropriate amount of sealant on the switch.
4. At this time, when filling antifreeze into the water tank, never add water, because it is easy to cause scaling and rust in the water tank, and don't fill antifreeze with different colors.
5. After filling the water tank with water, start the car to circulate the antifreeze in the water tank. At this time, we should pay attention to whether the antifreeze in the auxiliary water tank is.
6. After the operation, check the whole water tank and even the pipeline to see if there is any leakage. In case of leakage, it is necessary to postpone antifreeze again to solve the leakage, and then restart.