What is the principle of the three-wire thermal switch in the Jetta radiator?

1 Answers
Adriel
07/30/25 5:26am
The three wires consist of one power supply, one ground, and one signal wire. Below is a detailed introduction to the car radiator (professionally known as the radiator): 1. Main components: The radiator is part of the car's cooling system. The radiator in the engine water cooling system is composed of three parts: the inlet chamber, the outlet chamber, the main plate, and the radiator core. 2. Main function: When the engine's water temperature is high, the water pump circulates water repeatedly to lower the engine's temperature (the radiator is made up of hollow copper tubes. Hot water enters the radiator, is cooled by air, and then circulates back to the engine cylinder walls), thereby protecting the engine. In winter, if the water temperature is too low, the water circulation stops to prevent the engine temperature from becoming too low.
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