URO 357959139B HVAC Pressure Switch

HVAC Pressure Switch for Volkswagen Applications

This URO HVAC pressure switch is a specific-fit replacement for European vehicle air conditioning systems that need accurate refrigerant pressure monitoring. Built with a black rectangular connector, 4-wire layout, and POM housing, part number 357959139B is a direct service option for select Volkswagen Corrado, Passat, and Vanagon models.

• Specific-fit HVAC pressure switch for select Volkswagen vehicles
• Pressure limit closed: 455.147
• Pressure limit open: 227.573
• Black rectangular connector with male terminals
• 4-wire configuration for system communication
• POM housing material for durable under-hood use
• No mounting bracket included

Detailed Product Overview

URO 357959139B is an HVAC pressure switch used to monitor refrigerant pressure and help the air conditioning system respond correctly to pressure changes. It is listed for 1990-1992 Volkswagen Corrado, 1990-1992 Volkswagen Passat, and 1988-1991 Volkswagen Vanagon, including Vanagon chassis range from 120001 and to 120001 where noted. If you are replacing a failed Volkswagen Corrado HVAC pressure switch or sourcing a Volkswagen Passat AC pressure switch by part number 357959139B, this component provides a direct replacement path for the original application.

This part cross-references Four Seasons 20974 for the same application. It also interchanges with 357 959 139 and SW 10079.

Common Problems This Part Can Address

• Air conditioning compressor cycling incorrectly due to pressure switch failure
• AC system not engaging because the pressure signal is interrupted
• Intermittent cooling caused by worn switch contacts or connector issues
• Fault codes or electrical faults related to refrigerant pressure monitoring
• Loss of proper system protection from inaccurate pressure readings

Installation Notes and Tips

Verify connector shape, wire count, and pressure specifications before installation. This switch uses a male rectangular connector and does not include a mounting bracket, so confirm the original mounting arrangement on the vehicle before removal. For best results, inspect the HVAC electrical connector and refrigerant system condition during replacement.

Quality Assurance

URO Parts replacement components are manufactured to meet or exceed OEM specifications for European vehicles. A.P.A. also offers URO Premium upgraded components for problem-prone original designs, and those premium products are backed by an unlimited mileage, lifetime warranty. Part number 357959139B is part of URO’s replacement parts lineup for professional and DIY repair.