In my 2014 Model VW Golf 7, I get a 'Low Coolant Level' warning when I reach speeds of 130-140 km/h. When I check the expansion tank, I see that the water level is below the MIN line. However, when I look at the temperature gauge, I observe that it remains stable at 90 degrees, and the fan does not turn on. When I open the cap of the expansion tank, the water completely returns to its former level, and the warning disappears. There is no white smoke, etc., coming from my vehicle. Only when I open the engine oil cap while the engine is hot, something like vapor comes out. However, there is no a…
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