Audi A4 B7 Convertible Symphony CD Changer Radio Head Unit 8E0035195M

Visual condition of the part

The product shows signs of use visible in the photos.

Audi A4 B7 Convertible Symphony CD Changer Radio Head Unit is a factory-fitted multimedia system component from the Electronic control modules and controllers category, designed for integration with the electrical system of Audi vehicles. It offers a seamless fit for the cockpit, compatibility with the factory wiring harness, and predictable behavior within the vehicle's electronic network, which facilitates diagnostics and servicing.

Specifications and technical data

• SKU: 8E0035195M
• Mark: Audi
• Condition: Used
• OEM Part Number: 8E0035195M
• Substitutable numbers: 8E0035195M, 8E0 035 195 M
• Category: ECUs & Computer Modules

Technical characteristics and purpose

The Symphony radio with an integrated CD changer has been designed as a central audio control module for the cabin of the Audi A4 B7 generation Convertible. As an OEM-class component, it works with factory installations, maintaining compatibility with the vehicle's electrical architecture and the control logic provided by the manufacturer.

The device acts as an electronic controller responsible for audio signal distribution, communication with other infotainment modules, and handling functional features available from the front panel. As a result, it constitutes a coherent element of the system that can be integrated into the existing configuration without the need for additional software adapters.

Integration with the vehicle's electrical system

As a part from the Electronic control modules and controllers category, the radio head unit works with the factory wiring harness and the connectors provided by the manufacturer. This allows for maintaining the original cable routing, correct communication with other modules, and proper power supply and protection.

In practice, this means:

• the ability to plug into the existing system without interfering with the main electrical installation,
• maintaining the factory operating logic of buttons and control functions,
• easier diagnostics using standard Audi service tools.

Application in service and upgrades

The Symphony radio with CD changer is suitable both as a replacement part after a factory device failure and for restoring the car to its OEM configuration after previous modifications. It allows for maintaining a consistent look of the center console and uniform operation of the audio system.

Due to its classification as an electronic controller, when selecting and installing, it is worth paying attention to compatibility with the specific vehicle equipment version and the configuration of other modules. In many cases, correct selection based on manufacturer markings helps avoid communication problems in the vehicle network and limits the need for additional adaptations.

Product condition and benefits of choosing a used part

The offered item is in used condition, which allows combining the functionality of original equipment with a more favorable purchase cost compared to new components. For many Audi users, this is a sensible solution for routine repairs, interior restoration, or preparing the car for further use.

If you want to better understand how to safely select and install used controllers and other onboard electronics components, check out our guide: Used automotive electronics on board – why is it worth choosing second-hand ECU modules and sensors?

Expanding the Audi electronics system

If you are planning a comprehensive repair or upgrade of the onboard electronics area in your Audi and need other elements from the same group, such as additional comfort controllers, multimedia modules, or units managing assistance systems, check out the available parts in the Audi electronic control modules and controllers category.