





Intermotor Engine Cooling Fan Switch TS-579

Engine Cooling Fan Switch. (TS-579) by Intermotor
Robust design and high grade materials meet the stringent demands of today's service professional. In design, we specify custom wax formulations that will expand when heated, activate a snap action electrical contact and transfer the electrical signal to the fan controller. In manufacturing, we custom form the wax pellets for different temperature range specifications. All units are calibrated & tested to confirm switch actuation at their specified temperature. The switch is designed using a formed bimetallic contact arm. The bimetal contact movement is achieved using the different expansion rates of two metals fused together. This is a creep action device, provides precise performance. In production, all thermal switches are factory-calibrated to make electrical contact at the specified lower-temperature set point. As a global manufacturer of original equipment ignition products, we maintain complete quality control throughout the manufacturing process from componentry to finished product.
Vehicle Fitments:
| Year | Make | Model | Submodel | 
|---|---|---|---|
| 2001 - 2005 | Lexus | IS300 | Base | 
| 2002 - 2005 | Lexus | IS300 | Sportcross | 
| 2000 - 2005 | Toyota | Echo | Base | 
| 2001 - 2005 | Toyota | RAV4 | Base | 
| 2004 - 2005 | Toyota | RAV4 | L | 
| 2005 | Toyota | RAV4 | Sport | 


























