Calorstat TS2783 Engine Cooling Fan Switch

Engine Cooling Control for VW and Audi

Calorstat TS2783 is an engine cooling fan switch for vehicles with a two-speed cooling fan system. It controls fan operation at 97/87 and 102/97 temperature thresholds, helping manage coolant temperature in demanding driving conditions. This OE-supplier style replacement is listed for Volkswagen Beetle, Golf, Jetta, Phaeton, Touareg, and Audi TT applications.

Key Features

• Engine cooling fan switch with two-speed operation
• Speed 1 on/off temperature: 97 / 87
• Speed 2 on/off temperature: 102 / 97
• M22x1.5 thread size for direct-fit applications
• Calorstat TS2783 part number for catalog matching
• Fits Volkswagen Beetle, Golf, Jetta, Phaeton, Touareg, and Audi TT platforms

Detailed Description

Calorstat TS2783 is an engine cooling fan switch that monitors coolant temperature and triggers the radiator fan at two separate thresholds. The first fan speed engages at 97 and switches off at 87, while the second speed engages at 102 and switches off at 97. That staged operation helps maintain stable engine temperature in Volkswagen and Audi cooling systems that use a two-speed fan strategy. This part number, TS2783, is listed across 1999-2010 Volkswagen Beetle, 2000-2006 Audi TT and TT Quattro, 2000-2006 Volkswagen Golf, 2004-2006 Volkswagen Phaeton, 2004-2006 Volkswagen Touareg, and 1999-2005 Volkswagen Jetta applications.

This part cross-references 1J0959481A and TSW 65 for the same application.

What It Helps Address

• Cooling fan not switching on at the correct temperature
• Fan running too late and allowing elevated coolant temperature
• Intermittent two-speed fan operation
• Temperature control issues in Volkswagen Beetle, Golf, and Jetta cooling systems
• Cooling control faults on Audi TT and TT Quattro platforms

Installation Notes and Tips

Verify the thread size, M22x1.5, before installation and compare the temperature thresholds to the original switch specification. Confirm the vehicle uses a two-speed fan circuit and match the connector and mounting location to the existing cooling system layout. For best results, inspect the cooling fan relay, wiring, and coolant condition during replacement so the new switch can operate within the intended temperature range.

Quality Assurance

Calorstat, also known as Vernet, is an OE supplier to Volkswagen and Audi, which supports application accuracy for this cooling fan switch. Use the part number TS2783 and the vehicle fitment details to confirm the correct replacement for your cooling system.