Standard Ignition RU-549 HVAC Blower Motor Resistor

Overview of Standard Ignition HVAC Blower Motor Resistor RU-549

The Standard Ignition HVAC Blower Motor Resistor RU-549 is designed to regulate the blower motor speeds in select Audi models. Engineered for reliable performance, this resistor ensures proper airflow control for your vehicle's heating and cooling system.

• Compatible with Audi A6, A6 Quattro, Allroad Quattro, RS6, and S6 models
• Supports 3-5 speed blower motor operation
• 12-volt electrical rating suitable for standard automotive systems
• Clip attachment method for secure installation
• Rectangular female connector with one cavity and three male blade terminals
• No wiring harness or mounting brackets included

Technical Details and Features

The RU-549 blower motor resistor from Standard Ignition features a clip attachment method that allows for straightforward mounting without additional hardware. It includes a rectangular female connector designed to mate with the vehicle’s wiring harness, featuring one connector cavity and three male blade terminals. This resistor supports blower motors with 3 to 5 speed settings, providing precise control over the HVAC system’s airflow. Operating at 12 volts, it matches the electrical requirements of the compatible Audi models. Note that this part does not include a wiring harness or mounting brackets, so existing vehicle components will be used during installation.

Compatible Audi Models and Applications

This HVAC blower motor resistor is specifically compatible with the following Audi vehicles: A6, A6 Quattro, Allroad Quattro, RS6, and S6. It is designed to replace the original blower motor resistor in these models, restoring proper blower motor speed functionality and ensuring consistent climate control performance.

Common Issues Resolved by RU-549

• Inconsistent blower motor speeds or blower stuck on one speed
• HVAC blower not responding to speed control adjustments
• Intermittent or no airflow from the vehicle’s heating and cooling system
• Electrical resistance failure causing blower motor malfunction
• Overheating or burning smell from the HVAC system due to resistor failure

Installation Notes and Tips

Installation of the Standard Ignition RU-549 blower motor resistor requires removal of the old resistor from the HVAC housing. The clip attachment method allows for a secure fit without additional hardware. Ensure the rectangular female connector aligns properly with the vehicle’s wiring harness connector. Since no wiring harness or mounting brackets are included, use the existing components from the vehicle. It is recommended to disconnect the vehicle battery before installation to prevent electrical shorts.

Quality Assurance and Warranty

Standard Ignition parts are manufactured to meet or exceed OEM specifications for fit, form, and function. The RU-549 blower motor resistor undergoes quality testing to ensure reliable operation within the specified Audi models. Warranty coverage details should be confirmed at the point of purchase, as Standard Ignition typically offers limited warranties on their replacement parts.