Mercedes C204 Rear SAM Module Fuse Box Relay Control Unit A2049060205

The Rear SAM Module for Mercedes C204 is a specialized fuse and relay box responsible for advanced electrical circuit control in the rear of the vehicle. As a component from the Fuses and Fuse Boxes group, it ensures organized power distribution and control over numerous body functions. This solution is designed for users who expect stable electrical system performance and compliance with factory Mercedes standards.

Specifications and technical data

• SKU: A2049060205-2
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2049060205
• Substitutable numbers: A2049060205, A 204 906 02 05
• Location on the vehicle: Rear
• Category: Fuses & Fuse Boxes

Purpose and Function of the Rear SAM Module

The rear SAM module in the Mercedes C-Class C204 generation serves as the central point for managing power and control signals in the rear of the body. It is responsible for logical circuit separation, system protection through fuses, and handling relays that control selected consumers.

By integrating control and protection functions into a single housing, the module reduces the number of connections, contributing to greater electrical system reliability and facilitating diagnostics in case of malfunctions.

Vehicle Placement and Role in the Electrical System

This component is designed for installation in the rear of the vehicle, in accordance with the factory electrical system design of Mercedes. This placement shortens the length of harnesses leading to rear consumers, which reduces voltage drops and improves system stability.

• Direct control of circuits located in the rear zone of the body.
• Centralization of fuses and relays in one, more accessible location.
• Improved wire organization and faster circuit identification during servicing.

This solution is particularly beneficial for subsequent diagnostics or expanding the system with additional consumers, as most key connections are located within a single module.

Benefits of Using an Original Mercedes Module

Using an original SAM module dedicated to the Mercedes C204 ensures full compatibility with the vehicle's factory electrical architecture. This means proper connector fitment, compliance with load parameters, and correct interaction with other control units in the vehicle network.

• Factory Electrical Fitment – the module is prepared to work with the original wiring harness.
• Consistency with Control Logic – maintains manufacturer-intended protection functions and overload responses.
• Simplified Diagnostics – the module is recognized by factory service tools, speeding up fault localization.

For the user, this translates to a lower risk of communication problems between control units and more stable operation of the entire electrical system in the rear of the vehicle.

Application in Repairs and Upgrades

The rear SAM module is suitable for both typical replacement of a damaged fuse box and more extensive electrical system work on the Mercedes C204. Replacing it with a functional unit restores correct operation of circuits that may be responsible for lighting or other functions in the rear of the vehicle.

In practice, installation involves transferring harnesses to the appropriate sockets and correctly seating the module in its designated location. Following service procedures allows for the quick restoration of the system's full functionality.

Condition and Performance Characteristics

The offered module is a used part, making it an attractive solution for repairs where compliance with original specifications is crucial while optimizing costs. Such elements are often chosen by professional workshops specializing in Mercedes vehicle service, where both functionality and model-specific fit are important.

If you are planning a comprehensive repair or upgrade of the electrical zone in the rear of your Mercedes and need other parts from the same group, such as additional boxes, power distribution modules, or housings with fuse sockets, check the available parts in the Mercedes Fuses and Fuse Boxes category.

To better plan a broader vehicle upgrade, including improving cabin ergonomics and travel comfort, it is worth consulting a guide on interior equipment replacement – practical tips can be found in the article Interior Makeover: How Used Premium Seats Enhance Comfort and Vehicle Value.