Phone Adapter Mercedes W203 W211 Contact Plate Holder Telephone A2038201311

The Mercedes W203 W211 Bluetooth Socket Module is an original part from the Electronic Control Units and Controllers group, designed for integrating the Bluetooth system into selected Mercedes C-Class W203 and E-Class W211 models. This used module allows for the restoration of factory wireless connectivity functionality, ensuring compatibility with the vehicle's electrical system and electronic architecture.

Specifications and technical data

• SKU: A2038201311
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2038201311
• Substitutable numbers: A2038201311, A 203 820 13 11
• Category: ECUs & Computer Modules

Purpose and Function of the Bluetooth Module

The Bluetooth socket module is responsible for handling wireless communication between the vehicle and mobile devices, in accordance with the factory configuration of the Mercedes multimedia system. As a component from the Electronic Control Units and Controllers group, it communicates with the car's data bus, enabling the integration of telephone functions and control via the cabin buttons.

Using an original module maintains compatibility with the vehicle's software, minimizing the risk of communication errors, interference with other control units, or diagnostic issues.

Advantages of Using an Original Mercedes Module

Choosing a factory Bluetooth module for Mercedes W203 and W211 offers a range of practical technical benefits:

• Preservation of the original operating logic for the telephone and multimedia system,
• Compatibility with the wiring harness and connectors specified by the manufacturer,
• Proper cooperation with other control units in the vehicle,
• Easier diagnostics using service testers that support the Mercedes brand.

This makes the module particularly recommended for repairs where maintaining the original equipment configuration and stable operation of the onboard electronics is a priority.

Integration with Vehicle's Electrical System

The Bluetooth socket module is designed for direct integration with the factory electrical system in Mercedes W203 and W211. The controller's internal architecture allows it to be connected to the existing system without the need for wiring modifications or additional adapters, provided the vehicle is pre-equipped for such features.

This solution reduces installation time, simplifies servicing, and minimizes the risk of incorrect connections that could affect other electronic systems in the car.

Condition and Practical Application

The offered module is a used part, which for original Mercedes control units often represents a sensible compromise between cost and maintaining factory quality. Such components are frequently chosen for repairs of comfort and multimedia systems where compatibility with the existing vehicle electronics is crucial.

Before installation, it is recommended to verify compatibility with the specific car configuration and, if necessary, perform adaptation or coding using appropriate diagnostic equipment, following the service procedures for the given equipment version.

Expanding Mercedes Electronic System

If you are planning a comprehensive repair or upgrade of the electronic systems in your Mercedes and require other parts from the same group, such as comfort controllers, body control modules, or multimedia control units, check the available parts in the Mercedes Electronic Control Units and Controllers category.

For drivers interested in the broader context of using original electronic components in premium vehicles, including the impact of communication modules on maintaining brand character, an article on our blog may be helpful: Audi and Emotion in Pure Form – How Used Parts Help Maintain Brand DNA.

If you are considering the choice between new and used components and want to better understand the cost and quality differences for control units and modules, consult the guide: New or Used? A Comparison of Car Part Costs and Quality.