Under what circumstances does the car cooling fan operate?

[MacJonathan]

When the coolant in the radiator reaches a certain temperature (around 95 degrees Celsius), the thermal switch will control the activation of the radiator fan. Here are the specific details about the car cooling fan: 1. The operation or shutdown of the car cooling fan is controlled by the thermal switch located on the radiator. 2. When the coolant temperature reaches a higher level, the thermal switch will increase the fan speed. Once the coolant temperature drops to a certain level, the radiator fan will automatically turn off. 3. The car radiator cooling fan operates automatically and cannot be manually controlled. It does not activate at low temperatures. For medium and high temperatures, there are two speed settings: typically, the medium speed activates automatically at 95 degrees Celsius, and the high speed activates at 105 degrees Celsius.