Recently, the editor often receives messages from friends about "How to empty the water tank of Volkswagen Passat?", and now I will explain it to you.
The Volkswagen Passat water tank exhaust air is automatically exhausted. The sign of air in the car water tank is that the antifreeze in the water tank has air resistance, causing the coolant to not flow smoothly. After the antifreeze is filled, it fails to circulate in the engine at a normal rate. Finally, a high temperature alarm will appear. It's most likely caused by too much air entering the water tank. The steps for cleaning the car water tank are as follows:
1. Make sure the engine is cooled and turned off, remove the radiator cap and make sure the engine is cool;
2. Open the bottom of the radiator The drain plug allows the coolant to flow into a bucket. The coolant should be disposed of properly to avoid harm to the environment; close the drain plug and fill the radiator with water;
3. Turn on the engine and turn on the heater control system (This operation will open the heater control valve), add cooling system cleaner, and idle the engine for 30 minutes (or follow the instructions on the cleaner bottle);
4. Turn off the engine and let it cool down Drain the liquid in the radiator for 5 minutes;
5. Close the drain plug, fill the radiator with water and let the engine idle for 5 minutes, then refill the compound of water, ethylene glycol antifreeze, and coolant (Use the same coolant that the car used before).
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