Dorman 604-834 HVAC Blend Door Actuator - Main

HVAC Blend Door Actuator for Volkswagen and Audi

Dorman 604-834 is a replacement HVAC blend door actuator engineered to match the quality and performance of the original unit on select Volkswagen and Audi vehicles. It is built for temperature door control in systems with automatic temperature control, helping restore precise cabin air temperature regulation.

Key Features

• Rotary switch activation type for HVAC temperature door operation
• 5-pin male terminal design for the specified vehicle applications
• Plastic housing construction
• Direct replacement for select Volkswagen Jetta, Golf, and Clasico models, plus Audi TT and A3 applications
• Cross-reference part number: 1J1907511F

Detailed Description

This Dorman HVAC blend door actuator, part number 604-834, is intended for temperature control in compatible Volkswagen and Audi climate systems. It is a fitment-based replacement for vehicles such as the 2007-2010 Volkswagen Jetta, 2003-2007 Volkswagen Golf, 2004-2006 Audi TT, and 2004-2005 Audi A3 with automatic temperature control or electronic temperature control where specified. The actuator is designed to restore proper movement of the blend door so the HVAC system can direct heated or cooled air as commanded by the control head.

Use Dorman 604-834 when the original actuator no longer responds correctly, produces inconsistent temperature output, or fails to move the blend door through its full range. This part number is also referenced by 1J1907511F and is listed for multiple main-position temperature control applications across Volkswagen Jetta, Volkswagen Golf, Audi TT, Audi TT Quattro, Audi A3, and Audi A3 Quattro models.

What It Helps Fix

• Inconsistent cabin temperature from the HVAC vents
• Loss of hot or cold air blend control
• Blend door movement that does not follow temperature commands
• HVAC temperature settings that stay stuck or respond slowly
• Noise or failure from a worn blend door actuator

Installation Notes and Tips

Verify the vehicle’s year, make, model, position, and control type before ordering. This actuator is listed for main-position temperature applications with automatic temperature control or electronic temperature control, depending on the vehicle. Confirm connector style, terminal count, and fitment notes against the original part before installation. For best results, inspect the blend door and HVAC linkage for binding or damage before replacing the actuator.

Quality Assurance

Dorman states that 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. That OE-style replacement focus supports accurate fitment and function for the listed Volkswagen and Audi applications.