Dorman 604-831 HVAC Blend Door Actuator - Main

Dorman 604-831 HVAC Blend Door Actuator

Dorman 604-831 is an HVAC blend door actuator engineered to match the fit and function of the original unit on select Volkswagen and Audi vehicles. It is built for the defrost air door circuit on models with automatic temperature control or electronic temperature control, helping restore proper HVAC door movement and cabin airflow control.

Key Features

• HVAC blend door actuator for the defrost air door position
• Rotary switch activation type for controlled door movement
• 5-pin male terminal design for the specified vehicle applications
• Plastic housing construction
• Direct replacement for select Volkswagen Jetta, Golf, Clasico, and Audi TT, A3 applications
• Cross-references Dorman 604-831 with OE-style part number 1J1907511E

Detailed Description

This HVAC heater blend door actuator is precision-engineered to match the quality and performance of the original blend door actuator on specific vehicle years, makes and models. Dorman 604-831 is used in the defrost system on select Volkswagen Jetta, Volkswagen Golf, Volkswagen Clasico, Audi TT, Audi TT Quattro, Audi A3, and Audi A3 Quattro applications, including vehicles with Automatic Temperature Control (ATC) or Electronic Temperature Control where specified. For buyers searching for a Dorman 604-831 HVAC blend door actuator for Volkswagen Jetta or Audi TT defrost repair, this part provides a direct-fit replacement path for the listed applications.

Vehicle Fitment

• Fits 2011-2015 Volkswagen Clasico, Main; Defrost; w/Automatic Temperature Control (ATC); Packaging Type: Box
• Fits 2007-2010 Volkswagen Jetta, Main; Defrost; w/Automatic Temperature Control (ATC); Packaging Type: Box
• Fits 2003-2007 Volkswagen Golf, Main; Defrost; Electronic Temperature Control; Built in Brazil; From VIN 1J-4-028 920; Packaging Type: Box
• Fits 2004-2006 Audi TT, Main; Defrost; w/Automatic Temperature Control (ATC); Packaging Type: Box
• Fits 2004-2006 Audi TT Quattro, Main; Defrost; w/Automatic Temperature Control (ATC); Packaging Type: Box
• Fits 2003-2006 Volkswagen Jetta, Main; Defrost; w/Automatic Temperature Control (ATC); From VIN 1J-4-006 773; Packaging Type: Box
• Fits 2000-2005 Audi A3, Main; Defrost; w/Automatic Temperature Control (ATC); Built in Brazil; From 9/01/00; Packaging Type: Box
• Fits 2005 Audi A3 Quattro, Main; Defrost; w/Automatic Temperature Control (ATC); Built in Brazil; Packaging Type: Box
• Fits 2002-2005 Volkswagen Jetta, Main; Defrost; w/Automatic Temperature Control (ATC); From VIN 9M-4-081 456; To VIN 9M-5-149 999; Packaging Type: Box
• Fits 2004 Audi A3 Quattro, Main; Defrost; w/Automatic Temperature Control (ATC); Built in Brazil; From 9/01/00; Packaging Type: Box
• Fits 2004 Volkswagen Golf, Main; Defrost; Built in Germany; From VIN 1J-4-006 773; Packaging Type: Box
• Fits 2003 Audi TT, Main; Defrost; w/Automatic Temperature Control (ATC); From 6/30/03; Packaging Type: Box
• Fits 2003 Audi TT, Main; Defrost; From 7/01/03; Packaging Type: Box
• Fits 2003 Audi TT Quattro, Main; Defrost; From 7/01/03; Packaging Type: Box
• Fits 2003 Audi TT Quattro, Main; Defrost; w/Automatic Temperature Control (ATC); From 6/30/03; Packaging Type: Box

Common Repair Symptoms

• Defrost air stays in one position or does not respond to HVAC controls
• Temperature control changes do not move the blend door as expected
• Clicking, binding, or inconsistent actuator movement behind the dash
• Loss of proper airflow routing in the defrost circuit
• HVAC system does not maintain commanded air distribution on ATC-equipped vehicles

Installation Notes and Tips

Verify the vehicle’s year, make, model, position, and control type before ordering, since this actuator is specific to the listed defrost applications. Confirm connector style, terminal count, and mounting location against the original unit. On Volkswagen Jetta, Volkswagen Golf, and Audi TT applications, matching the VIN break and temperature-control notes is important for correct fitment. After installation, cycle the HVAC controls to allow the actuator to initialize and confirm full door travel.

Quality Assurance

Dorman designs this replacement actuator to mirror the original part’s fit and performance on the specified vehicles. The part number 604-831 is built for direct replacement use in the listed Volkswagen and Audi HVAC systems, with application-specific engineering for the defrost blend door function.