Standard Ignition RU-494 HVAC Blower Motor Resistor

HVAC Blower Motor Resistor for Audi A6

Standard Ignition RU-494 is an HVAC blower motor resistor for 12-volt systems with a 3-5 speed blower control setup. It uses a screw attachment method, two male blade terminals, and no connector or wiring harness, making it a direct replacement style component for select Audi HVAC systems.

Key Features

• HVAC blower motor resistor for blower speed control
• 12-volt electrical design
• 3-5 speed application coverage
• Two male blade terminals
• No connector, no wire harness, and no mounting bracket included
• Screw-mounted installation
• Fits 1999-2004 Audi A6, N/A
• Fits 1999-2004 Audi A6 Quattro, N/A
• Fits 2001 Audi S6, N/A
• Fits 2004 Audi S6, N/A

Detailed Description

Standard Ignition RU-494 is built for Audi HVAC systems that use a resistor-based blower speed circuit. This part is used in 1999-2004 Audi A6 and A6 Quattro models, plus 2001 and 2004 Audi S6 applications with a 2-pin resistor configuration. If your blower only works on certain speeds or the fan output is inconsistent, RU-494 is the type of replacement component used in that circuit. This part cross-references OE-style numbers such as 8D0959493 and BR397 for the same application.

Common Issues This Part Can Address

• Blower motor works on only one speed
• Intermittent cabin fan operation
• No low-speed or medium-speed fan output
• HVAC fan speed control failure
• Resistor circuit wear in the blower control system

Installation Notes and Tips

Confirm the vehicle uses a 2-pin resistor setup before ordering. Match the terminal style, connector layout, and mounting method to the original part. Because this unit uses screw attachment and no connector, inspect the existing harness and terminals for heat damage or corrosion before installation. Verify the blower motor and related HVAC controls are functioning properly, since a failed motor or damaged connector can affect resistor performance.

Quality Assurance

Standard Ignition replacement electrical components are built for service applications where accurate fit and terminal configuration matter. RU-494 is listed for direct vehicle-specific use in the Audi A6, Audi A6 Quattro, and Audi S6 applications shown above.