Description
Audi A3 8V Multimedia Radio Sat Nav CD Player Head Unit is an original component from the Electronic control modules and controllers group, designed to operate the multimedia and navigation system in Audi vehicles. Thanks to its factory design, it ensures consistent operation with other onboard modules and stable communication within the vehicle’s electrical installation.
Specifications and technical data
- SKU: 8V0035874B
- Mark: Audi
- Condition: Used
- OEM Part Number: 8V0035874B
- Substitutable numbers: 8V0035874B, 8V0 035 874 B
- Category: ECUs & Computer Modules
MMI controller and SD card reader function
The presented controller is responsible for managing the MMI interface, including the operation of navigation and multimedia stored on memory media. The integrated SD card reader allows for quick access to map data and audio files, which translates into convenient system operation from the factory panel in the cabin.
As a component dedicated to the Audi A3 8V platform, the module works with the vehicle’s installation in the manner intended by the manufacturer, which helps maintain the full functionality of the factory infotainment system.
Benefits of using an original Audi module
Using an original MMI controller to replace a damaged component allows you to restore the proper operation of navigation and multimedia functions without the need for wiring modifications or software interference beyond standard service procedures. This solution is particularly beneficial for repairs where maintaining the factory electronics architecture is a priority.
The module from this group is designed for compatibility with other onboard controllers, which reduces the risk of communication conflicts in the bus and facilitates diagnostics using standard service tools.
Selection by part numbers and installation integration
When selecting an MMI controller for a specific Audi A3 8V, it is crucial to pay attention to the manufacturer’s markings and the compatibility of the hardware and software version with the vehicle’s configuration. A properly selected module allows for efficient adaptation and configuration in the vehicle, followed by stable operation of the navigation and multimedia system.
To better understand the principles of selecting used controllers and other onboard electronics components, it is worth checking out our guide: Used automotive electronics – second-hand ECU modules and sensors, which discusses, among other things, selection by part numbers, compatibility issues, and practical installation tips.
Component condition and practical application
The offered controller belongs to the group of used OEM components, which means it comes from disassembly and is intended for re-installation in a vehicle after prior compatibility verification. This type of solution is often chosen in professional workshops where a combination of functionality and repair cost optimization is important.
In practice, the installation involves physically replacing the module and performing appropriate diagnostic and adaptation procedures, in accordance with the vehicle manufacturer’s guidelines and the service tools used.
Expanding your Audi multimedia system upgrade
If you are planning a comprehensive repair or upgrade of the onboard electronics in your Audi and need other elements from the same group, such as comfort controllers, body modules, or audio system control units, check out the available parts in the Audi electronic control modules and controllers category.






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