Universal Air SW10078C HVAC Binary Switch

Binary A/C Pressure Switch for Audi and Volkswagen

Universal Air SW10078C is a Binary HPCO/Cooling Fan Pressure Switch for select Audi and Volkswagen HVAC systems. It is used in A/C pressure monitoring circuits that help control compressor operation and cooling fan response on covered applications.

Key Features

• Binary HVAC pressure switch for high-pressure cutout and cooling fan control
• Direct fitment for select Audi A4, A6, A8, and Volkswagen Passat applications
• Fits vehicles with the new style A/C suction line hose assembly on 2001-2005 Volkswagen Passat
• Old style application noted for 1998-2000 Volkswagen Passat
• Part number SW10078C for ordering and fitment verification

Fitment Details

• Fits 2005 Audi A6 Quattro, N/A
• Fits 1998-1999 Audi A6 Quattro, N/A
• Fits 2001-2005 Volkswagen Passat, N/A; compatible with vehicles equipped with the new style A/C suction line hose assembly
• Fits 1998-2001 Audi A6, N/A
• Fits 1998-2000 Volkswagen Passat, N/A; old style
• Fits 1997-1999 Audi A8, N/A
• Fits 1997-1999 Audi A8 Quattro, N/A
• Fits 1996-1997 Audi A4, N/A
• Fits 1996-1997 Audi A4 Quattro, N/A

What This Switch Helps Address

• A/C compressor cycling caused by a failed pressure switch
• Cooling fan control issues tied to refrigerant pressure sensing
• Intermittent A/C shutdown on Audi A6 Quattro and Volkswagen Passat models
• Incorrect high-pressure cutout behavior in the HVAC circuit
• Pressure switch-related diagnostic trouble conditions

Installation Notes

Verify the vehicle’s A/C line style before ordering, especially on Volkswagen Passat applications where both old style and new style hose assemblies are listed. Confirm the part number SW10078C against the original switch and match the vehicle year, make, and model exactly to the fitment data.

Quality Assurance

Universal Air identifies this component as a Binary HPCO/Cooling Fan Pressure Switch for the listed Audi and Volkswagen applications. Use the confirmed fitment information to verify application coverage before installation.