Audi A4 B9 Multimedia Volume Control Button Switch Knob Head Unit 8W2919616

Audi A4 B9 Multimedia Volume Control Button Switch Knob Head Unit is an original control element designed for the head unit panel in this model. It ensures precise operation of the audio and multimedia system, restoring the factory ergonomics of the cockpit. Thanks to its specific OEM design, it integrates with the existing panel without interfering with the installation.

Specifications and technical data

• SKU: RHD-8W2919616
• Mark: Audi
• Condition: Used
• OEM Part Number: 8W2919616
• Substitutable numbers: 8W2919616, 8W2 919 616
• Category: Other Starters, Alternators, ECUs & Wiring

Purpose and function in the multimedia system

This component is responsible for smooth volume control and basic operation of the head unit in the Audi A4 B9 generation. It is a physical knob/button mounted directly into the control panel, allowing for intuitive operation without taking your eyes off the road. The design is adapted to the architecture of the Audi interior, ensuring visual and functional consistency with other elements of the center console.

Construction and compatibility with the head unit panel

The button has been designed as part of the original Audi multimedia control system, which means it matches the factory head unit panel in terms of shape, mounting method, and the operation of the rotary and push mechanism. The element works with the vehicle's electronics via existing connectors and the panel's faceplate, without the need for harness modifications or additional adapters.

As an OEM component, it maintains:

• consistent knob travel and resistance,
• precise operation of the push function,
• proper fit with the multimedia panel frame.

Condition of the element and service application

The offered button comes from disassembly and is intended as a spare part for repairing the multimedia panel. It is particularly useful in situations where the original module has experienced wear of the knob mechanism, issues with rotation response, or mechanical damage within the button area. Replacing the control element itself allows for reduced service costs compared to purchasing a complete head unit.

Benefits of using the original volume control button

Using a factory component in the Audi A4 B9 provides a number of practical advantages:

• Full compatibility with the multimedia system – no issues with communication with the head unit.
• Replication of the factory cockpit look – no differences in color or geometry of the element.
• Possibility to replace only the damaged button, without interfering with other modules.
• A service solution suitable for both workshops and users who care about maintaining the original interior configuration.

Expanding configuration and knowledge about Audi models

If you are interested in how technical solutions differ across various Audi versions, including the sporty RS variants, it is worth checking out the analysis of powertrains, braking systems, and chassis. A practical comparison can be found in the article Audi RS vs other models – what is hidden under the hood and chassis?, which helps to better understand the brand's design philosophy and select appropriate maintenance components.

Related components for Audi systems

If you are planning a comprehensive repair or upgrade of the multimedia control zone in your Audi and need other elements from the same group, such as additional control buttons, knobs, or auxiliary panel modules, check the available parts in the Other Audi category.