Mercedes-Benz W176 W205 W207 W213 Bluetooth Control Unit Module ECU A2139002210

The Mercedes W176 W205 W207 W213 Telematic Bluetooth Control Unit Module is a factory part from the Electronic Control Units and Controllers category, designed for integrating the telematics system and Bluetooth connectivity in selected Mercedes models. It enables stable communication between onboard units, ensuring convenient operation of multimedia functions and online services from the vehicle's factory system. Thanks to its original design, the module works with the car's wiring without requiring any modifications.

Specifications and technical data

• SKU: A2139002210
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2139002210
• Substitutable numbers: A2139002210, A 213 900 22 10
• Location on the vehicle: Rear
• Category: ECUs & Computer Modules

Purpose and Function of the Telematic Bluetooth Module

The presented control unit is a component of the telematics system responsible for handling Bluetooth connectivity and data communication in Mercedes compact and mid-size class vehicles. The module operates within the vehicle's network as a controller that:

• manages Bluetooth connections between the car and external devices,
• integrates phone and multimedia functions with the factory infotainment system,
• communicates with other control units within the vehicle's data bus.

Its placement in the rear of the vehicle facilitates organized wiring and reduces the module's exposure to vibrations typical of the engine bay.

Construction, Integration, and System Compatibility

The control unit belongs to the group of Electronic Control Units and Controllers, meaning it is designed to operate within the vehicle's CAN/LIN network while adhering to strict manufacturer requirements. The module's original hardware and software architecture allows for:

• correct identification within the vehicle's network upon connection to the wiring,
• compatibility with the factory hands-free system and audio system,
• operation of telematics functions intended for the specific car configuration.

This makes the module the right choice for both replacing a damaged control unit and restoring full connectivity system functionality after a failure.

Characteristics of a Used Component

As a used component, the control unit has already been in operation in a vehicle, which is typical for original parts sourced from dismantling. These types of components are often chosen by workshops and individual users because they:

• ensure the preservation of the system's original operating logic,
• allow for reduced repair costs compared to new components,
• facilitate matching to the specific vehicle equipment configuration.

Before installation, it is recommended to verify hardware and software compatibility with the vehicle, and then perform adaptation or coding according to the Mercedes service procedure.

Professional Installation and Selection by Part Numbers

To fully utilize the capabilities of the Telematic Bluetooth control unit, it is advisable to entrust the installation to a specialized service center equipped with the appropriate diagnostic software. Proper module selection is typically based on the OEM part number and interchangeable numbers, which minimizes the risk of communication problems within the vehicle's network and errors in the infotainment system.

If you want to better understand how to safely choose used control units and other onboard electronics, check out our guide: used automotive electronics – second-hand ECU modules and sensors, which details selection by VIN/OEM, compatibility issues, and practical installation tips step-by-step.

Other Mercedes Electronic Control Units and Controllers

If you are also looking for other Mercedes Electronic Control Units and Controllers suitable for your car, check out our dedicated offer: Mercedes Electronic Control Units and Controllers. This will allow you to easily assemble a set of control units compatible with the vehicle's factory architecture and maintain the consistency of the entire electronic system.