If no voltage was recorded on the scale during the previous check, then the thermal switch should be checked.
Unscrew the thermal switch.
It should be replaced if it has green-blue deposits on the surface facing the radiator cavity.
In this case, replacing the radiator is only necessary if it is damaged by electrolysis.
Only after rinsing with clean water or radiator cleaning agent should new coolant be added.
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Checking the thermal switch (VW Golf 1)
This article is available at russian, bulgarian, belarusian, ukrainian, serbian, croatian, romanian, polish, slovak, hungarian
The text has been checked: Medvedeva Elena
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