Description
Mercedes CL203 Antenna Amplifier Control Module Unit Aerial Booster is a component from the Electronic control modules and controllers group, responsible for stable amplification of the antenna signal in the vehicle’s electrical system. A properly selected module ensures reliable operation of radio and communication systems, which translates into comfort during daily use of your Mercedes vehicle.
Specifications and technical data
- SKU: A2038701689
- Mark: Mercedes (Genuine OE)
- Condition: Used
- OEM Part Number: A2038701689
- Substitutable numbers: A2038701689, A 203 870 16 89
- Category: ECUs & Computer Modules
Purpose and function of the module
The presented Mercedes CL203 Antenna Amplifier Control Module Unit Aerial Booster has been designed as an element of the electronic system responsible for processing and amplifying the signal from the antenna. Its task is to improve reception quality and the stability of systems based on radio signals, in accordance with the manufacturer’s factory specifications.
As a part from the Electronic control modules and controllers group, the module works with the vehicle’s electrical system, communicating with other controllers and ensuring proper operating parameters of the antenna system. Thanks to this, the driver receives predictable, repeatable system performance without the need for additional modifications.
Benefits of using an original Mercedes module
Using a module sourced from a Mercedes allows you to maintain the consistency of the vehicle’s entire electronic system. The original design ensures:
- compatibility with wiring harnesses and connectors used in the CL203 model,
- cooperation with factory body controllers and comfort systems,
- operating parameters consistent with the vehicle manufacturer’s specifications.
As a result, installation is straightforward, and once properly connected, the module can be integrated into the existing electronic architecture without the need for additional adapters or wiring modifications.
Characteristics of the used component
The offered module belongs to the group of used parts, which allows for an economical restoration of the antenna system’s efficiency while maintaining the original manufacturer’s specifications. This type of solution is particularly beneficial for vehicles where maintaining compatibility with factory electronics is essential, while simultaneously optimizing repair costs.
By choosing a used module from this group, you gain a component with parameters close to factory standards, which can be used both for standard replacement of a damaged amplifier and for restoring the completeness of the installation after bodywork repairs or work on the roof and rear section of the body.
Application in service practice
The antenna amplifier module in the Mercedes CL203 is an important component of the body’s electronic system, so its selection should take into account compatibility with the system of controllers used in a specific vehicle unit. In service practice, it is most often used for:
- troubleshooting radio signal reception problems or interference,
- repairs after collisions involving the rear part of the body,
- restoring the efficiency of the installation after interference in the area of the antenna or its cables.
By maintaining the original Mercedes electrical architecture, the module can be integrated into the existing system without the need for software changes in other controllers, provided the vehicle configuration is consistent with factory specifications.
More components from this group and knowledge about used electronics
If you are planning a comprehensive repair or upgrade of the body electronics area in your Mercedes and need other components from the same group, such as comfort modules, body controllers, or other signal amplifiers, check the available parts in the Mercedes electronic control modules and controllers category.
To better assess when choosing a used module is technically and economically justified, it is worth reading the advice contained in the article A second life for electronics – when is it worth choosing used engine controllers, comfort modules, and parking sensors?, which discusses the practical aspects of selecting and operating automotive electronics from disassembly.





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