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Four Seasons 36580 HVAC Binary Switch
Four Seasons Pressure Switch 36580
The Four Seasons 36580 pressure switch is a system-mounted HVAC binary switch built for pressure-based compressor control. It uses a black, open connector design with a 2-terminal layout and a female 7/16 in. x 20 fitting thread size for the specified application.
Compatible with 1978-1985 Mercedes-Benz 300D pressure switch applications, this Four Seasons Pressure Switch line part is made to meet or exceed OEM requirements. The 36580 part number is also referenced in cross applications for the same type of HVAC pressure switch service.
Key Features
- Binary HVAC pressure switch for system-mounted use
- Open connector shape with 2 terminals
- Female fitting, 7/16 in. x 20 thread size
- Black housing
- Operates at 28 psi low-off
- Meets or exceeds OEM specifications
Product Details
Four Seasons Pressure Switch 36580 is a pressure-actuated HVAC binary switch used to monitor system pressure and support compressor protection logic. In Mercedes-Benz 300D applications, the switch helps the HVAC system respond to pressure conditions at the system mount location, using the specified open connector and threaded female fitting. If you are replacing a worn or failed Mercedes-Benz 300D pressure switch, this part number 36580 provides an OE-style replacement path for the listed model years.
This part cross-references Febi-Bilstein 36580 for the same application.
Common Issues This Part May Address
- HVAC compressor cycling caused by incorrect pressure switch operation
- Compressor shutdown from a failed binary pressure signal
- Intermittent air conditioning performance tied to system pressure sensing
- Fault codes or electrical interruption at the pressure switch circuit
- Loss of compressor protection logic in the HVAC system
Installation Notes and Tips
Verify the connector shape, terminal count, fitting thread size, and system-mounted location before installation. Confirm the vehicle uses the listed 1978-1985 Mercedes-Benz 300D pressure switch application and compare the original switch to Four Seasons 36580 before replacement. Inspect the HVAC system for pressure-related faults so the new switch is installed into a properly serviced system.
Quality Assurance
Four Seasons lists this pressure switch as meeting or exceeding OEM requirements, making it a direct-fit replacement option for the specified HVAC application.
| Brand | Four Seasons |
|---|---|
| Part Number | 36580 |
| Position | Pressure Switch |
| Color | Black |
| Comp Open/Closed | Open |
| Connector Shape | Open |
| Description | Switch-Pressure /System Mount |
| Fitting Gender | Female |
| Fitting Thread Size | 7/16 in. x 20 |
| Item Included A Desc | 24650 |
| Item Included A Qty. | 1 |
| Meets / Exceeds OEM? | YES |
| Mnt Sys Loc | System Mounted |
| Number of Terminals | 2 |
| Operate Psi Low Off | 28 |
| Style | Binary |
| Type | Pressure |
This part fits 8 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 1985 | Mercedes-Benz | 300D | 3.0L | L5 | N/A | Pressure Switch |
| 1984 | Mercedes-Benz | 300D | N/A | Pressure Switch | ||
| 1983 | Mercedes-Benz | 300D | N/A | Pressure Switch | ||
| 1982 | Mercedes-Benz | 300D | N/A | Pressure Switch | ||
| 1981 | Mercedes-Benz | 300D | N/A | Pressure Switch | ||
| 1980 | Mercedes-Benz | 300D | N/A | Pressure Switch | ||
| 1979 | Mercedes-Benz | 300D | N/A | Pressure Switch | ||
| 1978 | Mercedes-Benz | 300D | N/A | Pressure 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.