Vemo V15-99-1976-1 Engine Cooling Fan Switch

Engine Cooling Fan Switch for Audi and Volkswagen

The Vemo V15-99-1976-1 engine cooling fan switch is a threaded temperature switch for controlling radiator fan operation in select Audi and Volkswagen applications. It uses a 3-pin connector and an M22x1.5 thread size, with a switch point at 92°C and a lower switch point at 77°C for temperature-based fan control.

Key Features

• Engine cooling fan switch for temperature-triggered fan operation
• Thread size: M22x1.5
• 3-pin plug type
• Switch point: 92°C
• Black housing
• Compact dimensions: 29 mm height, 29 mm length, 44 mm width
• Brand line: VEMO aftermarket replacement part

Fitment Details

• Fits 1997-2003 Audi A8 Quattro, N/A. Notes: Grade: Aftermarket; Thread Size: M22 x 1,5; Temperature Range (Celsius): 87-77 / 92-82 C; Plug (Connector): 3 Pins; VEMO.
• Fits 2001-2003 Audi S8, N/A. Notes: Grade: Aftermarket; Thread Size: M22 x 1,5; Temperature Range (Celsius): 87-77 / 92-82 C; Plug (Connector): 3 Pins; VEMO.
• Fits 1997-1999 Audi A8, N/A. Notes: Grade: Aftermarket; Thread Size: M22 x 1,5; Temperature Range (Celsius): 87-77 / 92-82 C; Plug (Connector): 3 Pins; VEMO.
• Fits 1993 Volkswagen EuroVan, N/A. Notes: Grade: Aftermarket; Thread Size: M22 x 1,5; Temperature Range (Celsius): 87-77 / 92-82 C; Plug (Connector): 3 Pins; VEMO.
• Fits 1990-1991 Volkswagen Vanagon, N/A. Notes: Grade: Aftermarket; Thread Size: M22 x 1,5; Temperature Range (Celsius): 87-77 / 92-82 C; Plug (Connector): 3 Pins; VEMO.

Detailed Description

This Vemo cooling fan switch is built for vehicles that rely on a threaded coolant temperature switch to command fan engagement. The V15-99-1976-1 part number is listed for Audi A8, Audi A8 Quattro, Audi S8, Volkswagen EuroVan, and Volkswagen Vanagon applications, making it a targeted replacement for specific factory-style cooling systems. This part cross-references Febi-Bilstein 37950 for the same application.

With an M22x1.5 thread, 3-pin electrical connection, and a 92°C switch point, this engine cooling fan switch supports temperature-controlled fan cycling in the cooling circuit. The black housing and compact form factor help it fit the intended mounting location without unnecessary bulk. VEMO V15-99-1976-1 is a practical choice when servicing an Audi or Volkswagen cooling system that uses this connector and thread specification.

Common Cooling System Issues

• Radiator fan does not switch on at the correct coolant temperature
• Cooling fan cycles inconsistently during stop-and-go driving
• Engine temperature rises higher than normal in traffic
• Fan control signal is lost due to a failed temperature switch
• Cooling system warning symptoms tied to switch-point drift

Installation Notes

Verify the thread size, connector style, and switch temperature before installation. This part uses an M22x1.5 thread and a 3-pin plug, so matching the original sensor or switch specification is important for proper fan control. Confirm the vehicle application against the listed fitment for Audi A8, Audi A8 Quattro, Audi S8, Volkswagen EuroVan, and Volkswagen Vanagon models before replacement.

Quality Assurance

VEMO is the listed brand line for this aftermarket replacement cooling fan switch. Part number V15-99-1976-1 is cataloged with defined dimensions, connector type, and temperature switching data to support accurate parts matching.