Audi A3 8V Radio CD SD SIM Player Stereo Sat Nav Head Unit 81A035192D

Audi A3 8V Radio CD SD SIM Player Stereo Sat Nav Head Unit is an original multimedia and navigation module from the Electronic control modules and controllers group, designed for factory installation in Audi vehicles. The device integrates radio, CD player, SD media support, and SIM card functionality, ensuring seamless control of the audio and navigation system in the cockpit.

Specifications and technical data

• SKU: 81A035192D
• Mark: Audi
• Condition: Used
• OEM Part Number: 81A035192D
• Substitutable numbers: 81A035192D, 81A 035 192 D
• Category: ECUs & Computer Modules

Purpose and function in the vehicle

The presented head unit serves as the central controller for the infotainment system in the Audi A3 8V. It is responsible for processing audio signals, handling sources such as CDs and SD cards, and managing satellite navigation functions. Through integration with the vehicle's electrical system, the module works with factory console buttons and the display, allowing for the preservation of the original cockpit ergonomics.

As an item in the Electronic control modules and controllers category, the radio-navigation unit communicates with other vehicle controllers via the data bus, which enables, among other things, the display of onboard information, system messages, and integration with the factory sound system.

Key advantages of the multimedia module

The original Audi unit provides a range of practical benefits in daily use:

• seamless integration with the electrical installation and vehicle systems,
• support for multiple data media (CD, SD, SIM) in a single device,
• ability to control satellite navigation using factory interior components,
• preservation of the original center console appearance without the need for modifications,
• compatibility with factory comfort functions and system messages.

For the user, this means convenient operation of multimedia and navigation without interfering with electrical wiring or the dashboard structure. Factory fitment reduces the risk of communication issues between controllers and facilitates future diagnostics.

Condition, origin, and service application

The module is offered as a used original Audi part, which in practice combines attractive cost with adherence to the manufacturer's specifications. Such units are frequently chosen for:

• replacing a damaged radio or navigation system after an electronics failure,
• restoring full functionality of the infotainment system after water damage or power surges,
• upgrading equipment from a simpler radio version to a more advanced navigation unit.

When installing in place of an existing device, it is recommended to verify compatibility via the OEM number and configure it for the specific vehicle using appropriate service software to ensure all functions operate correctly.

Selection, compatibility, and technical aspects

To correctly select this unit for a specific Audi A3 8V, it is worth paying attention to:

• compatibility with the electrical installation and the type of multimedia system used,
• matching the equipment version (display type, sound system),
• requirements for coding and potential adaptation in the vehicle.

During installation, it is recommended to use factory mounting points and original connectors, which minimizes the risk of wiring damage and ensures a stable connection. A correctly selected module allows for the restoration of full system functionality without the need for adapters or additional interfaces.

If you are planning a comprehensive repair or upgrade of the cockpit area in your Audi and need other components from the same group, such as comfort controllers, multimedia modules, or navigation units, check the available parts in the Electronic control modules and controllers Audi category.

Expert support and knowledge about used electronics

When working with onboard electronics, hardware and software compatibility, as well as correct installation procedures, are particularly important. To better understand how to safely select and install used control modules and other electronic components, it is worth consulting the Global Parts guide: Used automotive electronics on board – why is it worth choosing second-hand ECU modules and sensors?.

Additional information on comparing new and used components, their cost-effectiveness, and durability is also provided in the article: Car parts – new or used? We compare costs, quality, and durability, which helps to consciously plan the budget for the repair or upgrade of the multimedia system.