W204 Mercedes Sat Nav CD Player Radio Stereo Head Unit A2049002013 W204

Visual condition of the part

The product shows signs of use visible in the photos.

W204 Mercedes Sat Nav CD Player Radio Stereo Head Unit is a factory-fitted multimedia module from the Electronic control modules and controllers category, designed for integration with the electrical system of Mercedes W204 class vehicles. It offers a seamless combination of satellite navigation, a CD player, and a radio, providing the driver with convenient access to key infotainment functions in one central device. Using an original solution ensures compatibility with the onboard electronics architecture and maintains the interior aesthetics characteristic of the Mercedes brand.

Specifications and technical data

• SKU: A2049002013
• Mark: Mercedes (Genuine OE)
• OEM Part Number: A2049002013
• Substitutable numbers: A2049002013, A 204 900 20 13
• Category: ECUs & Computer Modules

Purpose and function in the vehicle

The presented head unit is the central component of the audio-navigation system in the Mercedes W204, responsible for handling radio signals, playing CDs, and managing satellite navigation functions. As an element from the Electronic control modules and controllers category, it communicates with other vehicle controllers via communication buses, which enables, among other things, displaying information on the system screen, integration with steering wheel buttons, and interaction with comfort systems.

Choosing an original multimedia unit allows you to maintain the consistency of the user interface, preserve the factory menu and operating logic, and reduce the risk of interference with the operation of other electronic systems.

Key technical features and integration with electronics

The Sat Nav CD Player Radio Stereo Head Unit has been designed specifically for the electrical architecture of W204 models, ensuring:

• full integration with the vehicle's installation via dedicated connectors and wiring harnesses,
• compatibility with factory displays and control panels,
• support for signals from sensors and other modules within the controller network,
• preservation of original system messages and the operating logic of multimedia functions.

As an OEM component from the Mercedes range, the module is optimized for electromagnetic compatibility, operational stability, and correct communication with other controllers, which is particularly important in modern installations with high electronic density.

Benefits of using an original Mercedes unit

Using a factory head unit in a Mercedes W204 brings a number of practical benefits:

• System consistency – maintaining the original interface, messages, and operating method without the need to adapt additional modules.
• High compatibility – matching the electrical installation, controllers, and vehicle equipment, which minimizes the risk of errors and system conflicts.
• Interior aesthetics – perfect fit of dimensions, shape, and finish to the center console, without the visual compromises typical of universal solutions.
• Stable multimedia system operation – correct cooperation with navigation functions, audio, and vehicle messages.

For users who want to preserve the character and functionality of the factory infotainment system, choosing an original Mercedes unit is a technically safe and predictable solution in operation.

Application in service and vehicle modernization

The described head unit will work well both as a replacement element in the event of a failure of the existing module and when upgrading multimedia equipment within the same vehicle generation. Thanks to the factory design, it is possible to use existing mounting points and factory wiring harnesses, which simplifies service work and limits the need for installation modifications.

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

Substantive support and development of multimedia systems

For drivers interested in the broader context of using original multimedia modules in premium cars, including vehicles of other brands, a blog article devoted to maintaining the character of infotainment systems may be helpful. You can read more about the role of factory components in maintaining equipment consistency in the article Audi and emotions in their purest form. How do used parts help maintain the brand's DNA?.