1. Every week, check the coolant level in the expansion tank. When the engine is cold, the coolant level should be between the "Min" and "Max" marks. When the engine is hot, the coolant level should reach the "Max" mark or slightly exceed it.
2. If the coolant level drops unexpectedly, you must immediately find the cause.
3. It is necessary to periodically check for leaks and damage to rubber pipes and connections.
4. Borigo fluid can be used for the cooling system, but the system should be rinsed with clean water before adding it.
5. It is necessary to periodically check the connections of the water temperature sensor pipes and the radiator fan thermal switch.
Caution: The electric fan will turn on even with the ignition off when the coolant temperature in the radiator is higher than the specified temperature. Therefore, it is necessary to work especially carefully near the fan blades or disconnect the electrical wires from the thermal switch or fan in advance.
[The original can be found at: VWMANUAL.ru]
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