OE Quality
60-Day Returns

Four Seasons 36549 Engine Cooling Fan Switch
Reliable Engine Cooling Fan Switch for Lexus and Toyota Vehicles
The Four Seasons Temperature Switch 36549 is designed to maintain optimal engine temperature by controlling the cooling fan operation. Engineered for select Lexus and Toyota models, this engine cooling fan switch ensures precise temperature regulation to protect your vehicle's engine.
- Connector color: White with rectangular shape for secure fit
- Two male terminals for reliable electrical connection
- Engine-mounted installation with M16-1.50 male fitting thread size
- Temperature activation range: turns on at 194°F and off at 185°F
- Meets or exceeds OEM specifications for dependable performance
About the Four Seasons Temperature Switch Product Line
The Temperature Switch line by Four Seasons focuses on temperature-sensitive components that regulate engine cooling systems. This product line includes switches designed to activate or deactivate cooling fans based on engine temperature, helping maintain efficient engine operation and prevent overheating. The 36549 switch is part of this line, offering precise temperature control and compatibility with various Lexus and Toyota models.
Detailed Product Description
The Four Seasons 36549 engine cooling fan switch is a temperature-activated switch that mounts directly on the engine. It features a white rectangular connector with two male terminals, ensuring a secure and stable electrical connection. The switch operates within a specific temperature range, activating the cooling fan at 194°F and turning it off at 185°F to maintain optimal engine temperature. Its M16-1.50 male fitting thread size allows for straightforward installation on compatible vehicles. This switch is designed to replace original equipment manufacturer parts, meeting or exceeding OEM standards for quality and durability.
Common Applications and Issues Addressed
- Prevents engine overheating by activating the cooling fan at the correct temperature
- Resolves cooling fan failure due to faulty temperature switch
- Eliminates intermittent fan operation caused by worn or damaged switches
- Ensures proper engine temperature regulation for Lexus Camry, GS300, LS400, and Toyota RAV4, Celica, MR2 models
- Improves engine performance by maintaining consistent cooling fan control
Installation Notes and Tips
- Ensure the engine is cool before attempting installation to avoid burns
- Verify the connector color and shape match your vehicle’s wiring harness (white rectangular connector with two male terminals)
- Use appropriate tools to remove the old switch and install the new one with the M16-1.50 thread size
- Check for secure electrical connections and proper mounting location on the engine
- Test the cooling fan operation after installation to confirm correct function
Quality Assurance and Warranty
The Four Seasons Temperature Switch 36549 is manufactured to meet or exceed OEM specifications, ensuring reliable performance and durability. This part undergoes rigorous quality control to maintain consistent standards. While specific warranty details may vary, Four Seasons typically offers coverage against defects in materials and workmanship to provide confidence in your purchase.
| Brand | Four Seasons |
| Part Number | 36549 |
| Position | Temperature Switch |
| Connector Color | White |
| Connector Gender | Male |
| Connector Shape | Rectangular |
| Description | Switch-Temp /Engine Mount |
| Fan Open/Closed | Closed |
| Fitting Gender | Male |
| Fitting Thread Size | M16-1.50 |
| Meets / Exceeds OEM? | YES |
| Mnt Sys Loc | Engine Mounted |
| Style | Temperature |
| Temperature Off | 185 |
| Temperature On | 194 |
| Terminal Quantity | 2 |
| Type | Cooling Fan |
This part fits 49 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2003 | Lexus | GS300 | N/A | Engine mounted coolant fan switch; Temperature Switch | ||
| 2003 | Lexus | GS430 | N/A | Engine mounted coolant fan switch; Temperature Switch | ||
| 2002 | Lexus | GS300 | N/A | Engine mounted coolant fan switch; Temperature Switch | ||
| 2002 | Lexus | GS430 | N/A | Engine mounted coolant fan switch; Temperature Switch | ||
| 2001 | Lexus | GS300 | N/A | Engine mounted coolant fan switch; Temperature Switch | ||
| 2001 | Lexus | GS430 | N/A | Engine mounted coolant fan switch; Temperature Switch | ||
| 2001 | Toyota | Camry | 2.2L | L4 | N/A | Engine mounted coolant fan switch; Temperature Switch |
| 2001 | Toyota | Solara | 2.2L | L4 | N/A | Engine Mounted; Position No. 2 In Switch Block; Temperature Switch |
| 2000 | Lexus | GS300 | N/A | Engine mounted coolant fan switch; Temperature Switch | ||
| 2000 | Lexus | GS400 | N/A | Engine mounted coolant fan switch; Temperature Switch | ||
| 2000 | Lexus | LS400 | N/A | Engine mounted coolant fan switch; Temperature Switch | ||
| 2000 | Toyota | Camry | 2.2L | L4 | N/A | Engine mounted coolant fan switch; Temperature Switch |
| 2000 | Toyota | RAV4 | 2.0L | L4 | N/A | Engine Mounted; To 7/00; Temperature Switch |
| 2000 | Toyota | Solara | 2.2L | L4 | N/A | Engine Mounted; Position No. 2 In Switch Block; Temperature Switch |
| 1999 | Lexus | GS300 | N/A | Engine mounted coolant fan switch; Temperature Switch | ||
| 1999 | Lexus | GS400 | N/A | Engine mounted coolant fan switch; Temperature Switch | ||
| 1999 | Lexus | LS400 | N/A | Engine mounted coolant fan switch; Temperature Switch | ||
| 1999 | Toyota | Camry | 2.2L | L4 | N/A | Engine mounted coolant fan switch; Temperature Switch |
| 1999 | Toyota | Celica | N/A | Engine mounted coolant fan switch; Temperature Switch | ||
| 1999 | Toyota | RAV4 | 2.0L | L4 | N/A | Engine mounted coolant fan switch; Temperature Switch |
| 1999 | Toyota | Solara | 2.2L | L4 | N/A | Engine Mounted; Position No. 2 In Switch Block; Temperature Switch |
| 1998 | Lexus | GS300 | N/A | Engine mounted coolant fan switch; Temperature Switch | ||
| 1998 | Lexus | GS400 | N/A | Engine mounted coolant fan switch; Temperature Switch | ||
| 1998 | Lexus | LS400 | N/A | Engine mounted coolant fan switch; Temperature Switch | ||
| 1998 | Toyota | Camry | 2.2L | L4 | N/A | Engine mounted coolant fan switch; Temperature Switch |
| 1998 | Toyota | Celica | N/A | Engine mounted coolant fan switch; Temperature Switch | ||
| 1998 | Toyota | RAV4 | 2.0L | L4 | N/A | Engine mounted coolant fan switch; Temperature Switch |
| 1997 | Lexus | GS300 | N/A | Engine mounted coolant fan switch; Temperature Switch | ||
| 1997 | Lexus | LS400 | N/A | Engine mounted coolant fan switch; Temperature Switch | ||
| 1997 | Toyota | Camry | 2.2L | L4 | N/A | Engine mounted coolant fan switch; Temperature Switch |
| 1997 | Toyota | Celica | 2.2L | L4 | N/A | Engine mounted coolant fan switch; Temperature Switch |
| 1997 | Toyota | RAV4 | N/A | Engine mounted coolant fan switch; Temperature Switch | ||
| 1996 | Lexus | LS400 | N/A | Engine mounted coolant fan switch; Temperature Switch | ||
| 1996 | Toyota | Camry | 2.2L | L4 | N/A | Engine mounted coolant fan switch; Temperature Switch |
| 1996 | Toyota | Celica | 2.2L | L4 | N/A | Engine mounted coolant fan switch; Temperature Switch |
| 1996 | Toyota | RAV4 | N/A | Engine mounted coolant fan switch; Temperature Switch | ||
| 1995 | Lexus | LS400 | N/A | Engine mounted coolant fan switch; Temperature Switch | ||
| 1995 | Toyota | Camry | 2.2L | L4 | N/A | Engine mounted coolant fan switch; Temperature Switch |
| 1995 | Toyota | Celica | 2.2L | L4 | N/A | Engine mounted coolant fan switch; Temperature Switch |
| 1994 | Lexus | LS400 | N/A | Engine mounted coolant fan switch; Temperature Switch | ||
| 1994 | Toyota | Camry | N/A | Engine mounted coolant fan switch; Temperature Switch | ||
| 1994 | Toyota | Celica | 2.2L | L4 | N/A | Engine mounted coolant fan switch; Temperature Switch |
| 1994 | Toyota | MR2 | N/A | Engine mounted coolant fan switch; Temperature Switch | ||
| 1993 | Toyota | Camry | N/A | Engine mounted coolant fan switch; Temperature Switch | ||
| 1993 | Toyota | Celica | 2.2L | L4 | N/A | Engine mounted coolant fan switch; Temperature Switch |
| 1993 | Toyota | MR2 | N/A | Engine mounted coolant fan switch; Temperature Switch | ||
| 1992 | Toyota | Camry | N/A | Engine mounted coolant fan switch; Temperature Switch | ||
| 1992 | Toyota | MR2 | N/A | Engine mounted coolant fan switch; Temperature Switch | ||
| 1990 | Toyota | Tercel | 1.5L | L4 | N/A | Engine mounted coolant fan 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.