Coolant is called antifreeze, which is the heat source of automobile air. Insufficient cooling liquid in cooling system is the most common and easily solved fault phenomenon, which will lead to warm air phenomenon, and hot air will not be turned on.
Methods of replacing automobile coolant:
1. Please wait for 10 minutes after the vehicle is turned off before changing the coolant. After driving, the coolant temperature is very high and it is easy to burn.
2. Vehicle inspection: Check the pipeline for signs of leakage and cracks, and check the five-way water pipe. If this part of the coolant leaks, replace the water pipe or re-fix the connection according to the situation.
3. Lift the vehicle with a jack.
4. Unscrew the screw of the bottom shell of the water tank with a wrench, and connect the old liquid with the waste basin.
5. Cover the expansion box cover with a thick towel, slowly loosen it until the air pressure is exhausted, and then completely remove the box cover. Use a compressed air blowtorch or a thick towel to pressurize the water inlet of the expansion tank and remove it from the engine block as far as possible.
6. Add softened water and leave it idle for 5 minutes to thoroughly clean the inside of the cooling circulation system.
7. Add new antifreeze to the upper limit of water level.
8. Run at idle speed for 5 minutes, then observe the scale line of antifreeze tank and fill it up.
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