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Four Seasons 37325 A/C Clutch Cycle Switch
Four Seasons 37325 Temperature Switch
The Four Seasons Temperature Switch, part number 37325, is an electronic A/C clutch cycle switch built for 12-volt HVAC systems. It uses a square connector, 2 terminals, and a system-mount design to help control compressor cycling based on temperature.
Compatible With Toyota Highlander, Sienna, Sequoia, and Tundra applications, this Four Seasons Temperature Switch 37325 meets or exceeds OEM requirements and uses a black plastic housing with a cycling-style operation.
Key Features
- Electronic activation control for temperature-based A/C clutch cycling
- System mount design with square connector and 2 terminals
- 12-volt operation for automotive HVAC systems
- Black plastic construction
- Temperature off at 32 and temperature on at 38
- Meets or exceeds OEM specifications
Product Details
Four Seasons Temperature Switch 37325 is a temperature-actuated A/C clutch cycle switch used in HVAC systems that rely on electronic control of compressor engagement. The cycling design helps regulate system operation by responding to temperature thresholds, with the switch opening and closing at the specified off and on points. This part cross-references 203725 and MT1636 for the same application.
Fits 2001-2010 Toyota Highlander, N/A. Fits 2004-2010 Toyota Sienna, N/A. Fits 2001-2007 Toyota Sequoia, N/A. Fits 2000-2006 Toyota Tundra, N/A. These Toyota applications make part number 37325 a direct-fit option for select factory-style HVAC repair needs.
Common Repair Symptoms
- A/C compressor cycling too frequently
- Compressor not engaging at the correct temperature
- Inconsistent cabin cooling performance
- Faulty temperature-based clutch control
- HVAC system switching behavior outside normal range
Installation Notes
Verify connector shape, terminal count, and mounting location before installation. Confirm the temperature switch specification matches the vehicle’s HVAC control strategy and inspect the related wiring and connectors for corrosion or damage. Always compare the original part number and application details before replacing the switch.
Quality Assurance
Four Seasons manufactures this temperature switch to meet or exceed OEM requirements for fit and function in supported Toyota HVAC applications.
| Brand | Four Seasons |
|---|---|
| Part Number | 37325 |
| Position | Temperature Switch |
| Activation Control | Electronic |
| Color | Black |
| Connector Shape | Square |
| Description | Switch-Temp /System Mount |
| Material | Plastic |
| Meets / Exceeds OEM? | YES |
| Mnt Sys Loc | System Mount |
| Number of Terminals | 2 |
| Style | Cycling |
| Temperature Off | 32 |
| Temperature On | 38 |
| Type | Temperature |
| Voltage | 12 |
| Weather Pack? | No |
This part fits 31 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2010 | Toyota | Highlander | N/A | A/C Clutch Cycle Switch (Temperature Switch); Temperature Switch | ||
| 2010 | Toyota | Sienna | N/A | A/C Clutch Cycle Switch (Temperature Switch); Temperature Switch | ||
| 2009 | Toyota | Highlander | N/A | A/C Clutch Cycle Switch (Temperature Switch); Temperature Switch | ||
| 2009 | Toyota | Sienna | N/A | A/C Clutch Cycle Switch (Temperature Switch); Temperature Switch | ||
| 2008 | Toyota | Highlander | N/A | A/C Clutch Cycle Switch (Temperature Switch); Temperature Switch | ||
| 2008 | Toyota | Sienna | N/A | A/C Clutch Cycle Switch (Temperature Switch); Temperature Switch | ||
| 2007 | Toyota | Highlander | 3.3L | V6 | N/A | A/C Clutch Cycle Switch (Temperature Switch); Temperature Switch |
| 2007 | Toyota | Sequoia | N/A | A/C Clutch Cycle Switch (Temperature Switch); Temperature Switch | ||
| 2007 | Toyota | Sienna | N/A | A/C Clutch Cycle Switch (Temperature Switch); Temperature Switch | ||
| 2006 | Toyota | Highlander | 3.3L | V6 | N/A | A/C Clutch Cycle Switch (Temperature Switch); Temperature Switch |
| 2006 | Toyota | Sequoia | N/A | A/C Clutch Cycle Switch (Temperature Switch); Temperature Switch | ||
| 2006 | Toyota | Sienna | N/A | A/C Clutch Cycle Switch (Temperature Switch); Temperature Switch | ||
| 2006 | Toyota | Tundra | N/A | A/C Clutch Cycle Switch (Temperature Switch); Temperature Switch | ||
| 2005 | Toyota | Highlander | 3.3L | V6 | N/A | A/C Clutch Cycle Switch (Temperature Switch); Temperature Switch |
| 2005 | Toyota | Sequoia | N/A | A/C Clutch Cycle Switch (Temperature Switch); Temperature Switch | ||
| 2005 | Toyota | Sienna | N/A | A/C Clutch Cycle Switch (Temperature Switch); Temperature Switch | ||
| 2005 | Toyota | Tundra | N/A | A/C Clutch Cycle Switch (Temperature Switch); Temperature Switch | ||
| 2004 | Toyota | Highlander | N/A | A/C Clutch Cycle Switch (Temperature Switch); Temperature Switch | ||
| 2004 | Toyota | Sequoia | N/A | A/C Clutch Cycle Switch (Temperature Switch); Temperature Switch | ||
| 2004 | Toyota | Sienna | N/A | A/C Clutch Cycle Switch (Temperature Switch); Temperature Switch | ||
| 2004 | Toyota | Tundra | N/A | A/C Clutch Cycle Switch (Temperature Switch); Temperature Switch | ||
| 2003 | Toyota | Highlander | N/A | A/C Clutch Cycle Switch (Temperature Switch); Temperature Switch | ||
| 2003 | Toyota | Sequoia | N/A | A/C Clutch Cycle Switch (Temperature Switch); Temperature Switch | ||
| 2003 | Toyota | Tundra | N/A | A/C Clutch Cycle Switch (Temperature Switch); Temperature Switch | ||
| 2002 | Toyota | Highlander | N/A | A/C Clutch Cycle Switch (Temperature Switch); Temperature Switch | ||
| 2002 | Toyota | Sequoia | N/A | A/C Clutch Cycle Switch (Temperature Switch); Temperature Switch | ||
| 2002 | Toyota | Tundra | N/A | A/C Clutch Cycle Switch (Temperature Switch); Temperature Switch | ||
| 2001 | Toyota | Highlander | N/A | A/C Clutch Cycle Switch (Temperature Switch); Temperature Switch | ||
| 2001 | Toyota | Sequoia | N/A | A/C Clutch Cycle Switch (Temperature Switch); Temperature Switch | ||
| 2001 | Toyota | Tundra | N/A | A/C Clutch Cycle Switch (Temperature Switch); Temperature Switch | ||
| 2000 | Toyota | Tundra | N/A | A/C Clutch Cycle Switch (Temperature Switch); Temperature Switch |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
This part directly replaces or is cross-referenced with the following part numbers:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.