Radio Player Mercedes W204 Audio 20 Navi CD Player Head Unit A2049006003

Visual condition of the part 

The product shows signs of use visible in the photos. 

Radio Player Mercedes W204 Audio 20 Navi CD Player Head Unit is a factory-fitted component from the Electronic control modules and controllers group, designed for integration with the electrical system of Mercedes vehicles. It offers stable control of audio functions and communication with other electronic systems in the car, ensuring consistent operation of the entire multimedia setup.

Specifications and technical data

• SKU: A2049006003
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2049006003
• Substitutable numbers: A2049006003, A 204 900 60 03
• Category: ECUs & Computer Modules

Technical characteristics and function in the vehicle

Radio Player Mercedes W204 Audio 20 Navi CD Player Head Unit acts as a central module responsible for managing the audio system and exchanging data with other controllers in the vehicle. As an element from the Electronic control modules and controllers category, it interacts with the onboard electrical system via communication buses, enabling the proper functioning of multimedia features and integration with displays and control panels in the cabin.

The head unit is designed for the electrical architecture of the W204 series, which translates into predictable behavior within the vehicle network and correct cooperation with other electronic modules. As a result, it can be used both as a replacement part in the event of a failure and for equipment configuration in accordance with factory specifications.

Application and benefits of installation

By installing this head unit in your Mercedes, you restore or maintain:

• consistency of the multimedia system with other controllers in the vehicle,
• proper operation of audio functions via factory buttons and panels,
• preservation of the original logic of the onboard electronics.

Choosing a component from the same design group as the factory equipment facilitates diagnostics and service, as operating parameters are consistent with the manufacturer's requirements. This solution is particularly beneficial for repairs where compatibility with the existing wiring harness and other modules is essential.

Product condition and practical aspects

The offered head unit is in Used condition, meaning it has been removed from a vehicle and was previously in operation. This type of component allows for an economical repair of the electronic system while maintaining the original manufacturer's specifications. In practice, this helps reduce service costs while utilizing parts of factory origin.

Before installation, a standard workshop procedure is recommended, including verification of compatibility with the specific vehicle configuration and – if necessary – appropriate coding or adaptation in the diagnostic system. This approach minimizes the risk of communication errors between modules and ensures stable operation of the entire system.

Electronics selection and expert support

When choosing a used head unit and other onboard electronic components, it is worth following the compatibility with the vehicle's electrical architecture and the manufacturer's markings. Helpful tips on selecting controllers, comfort modules, and sensors can be found in the article: Second life for electronics – when is it worth choosing used engine controllers, comfort modules, and parking sensors?.

If you are planning a comprehensive repair or upgrade of the onboard electronics in your Mercedes and need other elements from the same group, such as control modules, controllers, or other electronic units, check out the available parts in the Electronic control modules and controllers Mercedes category.