Where is the Thermostat Switch for the Car Electric Fan Located?
2 Answers
The thermostat switch for the car electric fan is located in the central control area of the vehicle. Below is relevant information about the thermostat switch: 1. Operating Range: The operating range of the car thermostat switch is 85~105℃. 2. Composition: It consists of a wax temperature-sensitive driving element and a two-stage contact action mechanism. The switch utilizes the sudden volume expansion of paraffin wax when it changes from solid to liquid upon heating to move the push rod, thereby controlling the opening and closing of the contacts. As the coolant temperature rises, the paraffin wax begins to expand, pushing the push rod through the rubber sealing membrane to overcome the tension of the spring frame. 3. Function: The thermostat switch in the car air conditioning system is the main switch used to adjust whether the air conditioning provides cooling or heating. Rotating this switch enables the switching between cooling and heating functions.
I often see the thermal switch for the electric fan mounted on the side or top of the radiator, especially in older models. It sits right against the edge of the coolant tank, resembling a small plastic sensor with a bunch of wires attached. When popping the hood, it's best to let the car cool for 10 minutes to avoid burns—I recall checking my own vehicle and finding it tucked near the hose connector, fixed in place yet easily overlooked. As temperatures rise, the switch detects coolant changes and automatically closes the circuit to activate the fan for engine cooling. If the fan fails, start by inspecting the switch: use a multimeter to check if its resistance falls within the normal 15-20K ohm range; otherwise, it might be corroded or stuck. Always consult the user manual for the exact location, as placement is generally similar but varies slightly between sedans and SUVs.
