Mercedes W204 CD Player Radio Stereo Navigation Sat Nav Head Unit A2049009410

Visual condition of the part 

The product shows signs of use visible in the photos. 

Mercedes W204 CD Player Radio Stereo Navigation Sat Nav Head Unit is a factory component from the Electronic control modules and controllers group, designed for integration with the electrical system of Mercedes C-Class W204 generation vehicles. It offers a seamless combination of radio functions, CD playback, and navigation support, ensuring an aesthetic fit for the cockpit and predictable behavior within the vehicle's onboard network.

Specifications and technical data

• SKU: A2049009410-1
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2049009410
• Substitutable numbers: A2049009410, A 204 900 94 10
• Category: ECUs & Computer Modules

Functional characteristics and vehicle integration

The radio player combines audio system functions and a navigation module into a single unit, which simplifies the vehicle's electronics architecture. As an OEM component from the Mercedes range, it is designed to work with the factory installation, communication bus, and controls from the multifunction steering wheel and onboard displays (depending on the vehicle configuration).

The device acts as a central point for multimedia and navigation operation, which allows for maintaining the consistency of the user interface, menu logic, and system messages throughout the vehicle. Thanks to this, the driver receives predictable, stable system performance without the need for additional adapters or universal solutions.

Application in the Mercedes electronic system

As an element from the Electronic control modules and controllers category, the radio player acts as a controller responsible for audio signal distribution, audio source handling, and communication with other comfort and infotainment modules. The design intended for the W204 platform ensures a fit for the electrical architecture of this generation, which facilitates installation and configuration.

In practice, this means:

• maintaining the factory control logic from the center console buttons,
• communication with other controllers via appropriate buses,
• possibility of integration with existing speakers and wiring without modifying the installation.

Benefits of choosing an original used module

Choosing an original, used radio player for the Mercedes W204 allows you to maintain the consistency of the multimedia system with the rest of the vehicle's electronics. This type of solution is particularly beneficial for repairs after a factory device failure or when restoring the car to a configuration close to the original state after previous modifications.

The main advantages include:

• factory fit to the dashboard and electrical harnesses,
• maintaining the original interior look,
• predictable cooperation with other controllers in the vehicle.

Practical installation tips and selection by part numbers

Before purchasing, it is worth verifying the module's compatibility with the specific vehicle configuration using part numbers and vehicle identification data. This helps avoid hardware or software compatibility issues and speeds up the installation process. In case of doubt, a good solution is to consult an automotive electrician or a service specializing in Mercedes electronics.

To better understand the principles of selecting and installing used controllers and other electronic components, it is worth using a guide describing selection by VIN/OEM, compatibility issues, and the most frequently asked questions by users – this is discussed in detail in the article Used automotive electronics on board – why is it worth choosing second-hand ECU modules and sensors?.

System expansion within the same group

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