Mercedes W204 S204 Radio Head Unit Sat Nav CD Player 2049003509

Visual condition of the part 

The product shows signs of use visible in the photos. 

Mercedes W204 S204 Radio Head Unit Sat Nav CD Player is a factory-fitted component from the Electronic control modules and controllers category, designed for integration with the electrical system of Mercedes C-Class W204/S204 generation vehicles. This multimedia solution combines radio, satellite navigation, and CD player functions, ensuring seamless operation with other onboard systems and an aesthetic fit for the dashboard.

Specifications and technical data

• SKU: A2049003509
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: 2049003509
• Substitutable numbers: A2049005410, A 204 900 54 10, A2049011803, A 204 901 18 03, A1729022904, A 172 902 29 04
• Category: ECUs & Computer Modules

Purpose and vehicle integration

The presented Sat Nav radio is designed specifically for Mercedes C-Class W204 sedan and S204 estate models, ensuring full compatibility with the factory wiring harness and the vehicle's electronic architecture. As a component from the Electronic control modules and controllers group, it works in tandem with other comfort modules and body systems, enabling multimedia control via the multifunction steering wheel and the vehicle's central interface.

The device is adapted for installation in the original location within the center console, allowing for a consistent interior look and ergonomic access to all functions. Using an original module reduces the risk of software conflicts and data bus communication issues compared to universal aftermarket solutions.

Multimedia and navigation functions

The radio combines a radio tuner, satellite navigation, and a CD player into one unit, allowing for convenient media management without the need for additional devices. Integration with the vehicle system enables information to be displayed on the factory screen and allows basic functions to be controlled via panel buttons and – depending on the car's configuration – the steering wheel.

This solution provides the driver with clear access to navigation data and information about currently playing tracks, while maintaining user interface consistency with other Mercedes systems. The original module is optimized for operation in the specific model, which translates into stability and predictable performance.

Characteristics of the used module

The item is offered in used condition, meaning it has been removed from a vehicle and was previously in operation. Such original modules are often chosen as a cost-effective alternative to new parts, while maintaining factory fitment and correct cooperation with the existing installation. Before installation, it is recommended to verify compatibility with the specific vehicle equipment version and – if necessary – perform adaptation or coding using appropriate diagnostic equipment.

By using an original Sat Nav radio, it is possible to replace a damaged unit or restore full functionality of the multimedia system without interfering with the electrical installation or requiring wiring modifications.

Selection and part number compatibility

The radio belongs to a group of components identified by an OEM part number and associated interchangeable numbers. When selecting the correct module for a specific Mercedes, it is crucial to compare the markings with the vehicle documentation or the removed part to ensure full hardware and software compatibility. If in doubt, it is worth seeking assistance from a service specializing in Mercedes electronics, which can verify compatibility based on part numbers and vehicle equipment.

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

Technical support and additional information

When choosing a used Sat Nav radio, it is worth understanding the specifics of automotive electronics and the principles of safely selecting controllers and modules. Practical tips on assessing the condition, fitment, and cost-effectiveness of purchasing used electronic components can be found in the article "Second life for electronics – when is it worth choosing used engine controllers, comfort modules, and parking sensors?", which discusses key aspects of the operation and diagnostics of such components.

If you are interested in a broader context of using original, used components in popular car models, the guide to the most frequently chosen parts may also be helpful, available in the material "Best used car parts – a guide to the most frequently chosen original parts for popular car brands and models", which allows you to better plan your repair and modernization strategy.