Mercedes CL C216 Rear SAM Module Control Unit ECU A2219004601

Mercedes CL C216 Rear SAM Module Control Unit ECU is an advanced component from the Electronic control modules and ECUs category, responsible for managing numerous electrical functions in the rear of the vehicle. The offered control unit is a dismantled part, which allows for an economical yet professional repair of the electrical systems in your Mercedes, while maintaining the factory installation architecture.

Specifications and technical data

• SKU: A2219004601
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2219004601
• Substitutable numbers: A2219004601, A 221 900 46 01
• Location on the vehicle: Rear
• Category: ECUs & Computer Modules

Purpose and function of the rear SAM control unit

The rear SAM module in the Mercedes CL C216 acts as a central unit managing multiple electrical circuits in the rear of the body. It is responsible for, among other things, logical power control, signal distribution, and communication with other vehicle control units via the data bus. This ensures consistent operation of systems such as rear lighting, selected comfort features, or security systems.

Replacing a damaged module with an original component from the same family allows for restoring the correct operation of the installation without interfering with the factory wiring, which is particularly important in premium class vehicles such as the Mercedes CL C216.

Vehicle placement and installation aspects

The presented control unit is designed for installation in the rear of the vehicle, in accordance with the manufacturer's factory design. Such dedicated vehicle placement facilitates service and diagnostics, and minimizes the risk of installation errors. The module works with the original Mercedes electrical system, which promotes full compatibility with other systems.

When replacing, it is recommended to perform a full computer diagnostic, including reading and clearing error codes and – if necessary – adapting or coding the module in accordance with service procedures for the specific equipment version. This allows for stable operation of the systems and reduces the risk of recurring faults.

Benefits of using an original Mercedes module

Using an original rear SAM control unit in a Mercedes CL C216 brings a number of practical advantages:

• preservation of the factory logic of electrical and comfort systems,
• consistency with the vehicle's CAN network architecture,
• reduced risk of compatibility issues compared to aftermarket replacements,
• possibility of proper diagnostics using standard service tools.

Thanks to this, repairing electronic systems in the rear of the body becomes more predictable, and the vehicle retains parameters close to the factory configuration.

Condition, verification, and selection of the appropriate control unit

The offered module comes from the secondary market, which allows for a significant reduction in repair costs compared to purchasing a new unit. Before installation, it is worth verifying compatibility with your specific vehicle, particularly in terms of equipment version and electrical configuration. Installation by a workshop experienced with Mercedes electronics is recommended, as it facilitates the correct execution of adaptation procedures.

If you want to better understand when choosing a used control unit is justified, how to assess its suitability, and what to pay attention to during installation, check out our guide: The second life of electronics – when is it worth choosing used engine ECUs, comfort modules, and parking sensors?

Expanding the electronics system in a Mercedes

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 additional control units, comfort modules, or lighting management units, check the available parts in the Mercedes electronic control modules and ECUs category.