Mercedes-Benz A-Class W176 Audio 20 CD Player Navigation Stereo Radio Head Unit

Mercedes-Benz A-Class W176 Audio 20 CD Player Navigation Stereo Radio Head Unit is an original multimedia system head unit designed for factory installation in A-Class models. As a component from the Electronic control modules and controllers group, it is responsible for operating the radio, CD player, and navigation functions, ensuring seamless operation with the vehicle's other electronics. This is the ideal solution for users who want to maintain full integration with the electrical system and interior ergonomics of their Mercedes.

Specifications and technical data

• SKU: A2469002718
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2038201786
• Substitutable numbers: A2469002718, A 246 900 27 18, A2469011106, A 246 901 11 06, A1729026806, A 172 902 68 06, A2469026903, A 246 902 69 03, A1769024100, A 176 902 41 00, BG
• Location on the vehicle: Rear
• Category: ECUs & Computer Modules

Function and role of the Audio 20 unit in the Mercedes-Benz A-Class W176

The presented Audio 20 CD Player Navigation Stereo Radio Head Unit serves as the central controller for the audio and information system in the cabin. It is responsible for:

• controlling the radio and CD playback,
• operating navigation functions via the factory interface,
• cooperating with console buttons and the multifunction steering wheel,
• communicating with other vehicle modules via the data bus.

Thanks to this, the driver receives a consistent, predictable interface, and all multimedia functions remain integrated with the Mercedes onboard electronics.

Integration with the installation and vehicle placement

As an element from the Electronic control modules and controllers category, the Audio 20 CD Player Navigation Stereo Radio Head Unit is designed to work in the specific electrical and communication environment of the A-Class. The placement intended for this unit is in the rear part of the vehicle, which means the module works with the wiring harness routed from the factory to this area of the body.

Such an architecture allows for:

• maintaining the original installation routing,
• stable communication with other controllers,
• easier diagnostics in case of multimedia system servicing.

Benefits of using an original Mercedes module

Using an original Audio 20 CD Player Navigation Stereo Radio Head Unit in a Mercedes-Benz A-Class W176 provides a number of practical benefits compared to universal solutions:

• Full electrical compatibility – the module is prepared to work with the factory installation, without the need for harness modifications or the use of additional adapters.
• User interface consistency – maintaining the original look and logic of the multimedia system, which facilitates daily vehicle use.
• Integration with vehicle systems – proper cooperation with other controllers, such as comfort modules or displays, reduces the risk of communication errors.
• Service diagnostic capability – support by factory diagnostic tools facilitates the detection and removal of potential faults.

Characteristics of the used product

The offered unit belongs to the group of used electronic control modules, which means it has been removed from a vehicle and was previously in use. Such components are frequently chosen for repairs and upgrades because they allow for maintaining the original vehicle specification while optimizing costs. Before installation, a standard diagnostic procedure and verification of compatibility with the specific car configuration are recommended.

Fitment, identification, and compatibility

To correctly select the Audio 20 CD Player Navigation Stereo Radio Head Unit for your A-Class, it is worth paying attention to:

• compatibility with the vehicle's model year and trim level,
• type of multimedia installation used,
• information contained in service documentation or parts catalogs.

The product has assigned OEM part numbers and interchangeable numbers, which enable precise identification in the manufacturer's catalogs and service systems, without the need for interfering with the vehicle's installation.

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 power management units, check the available parts in the Mercedes electronic control modules and controllers category.

To compare how other premium manufacturers approach maintaining brand character and original specifications, it is worth reading the article on our blog: Audi and pure emotion – how used parts help maintain the brand's DNA. It helps to better understand why using original multimedia modules and controllers is also important in the case of Mercedes.