Mercedes C204 Rear SAM Module Fuse Box Relay Control Unit A2049060205

Mercedes C204 Rear SAM Module Fuse Box Relay Control Unit is an advanced control unit responsible for power distribution and relay management in the rear part of the vehicle. This component from the Fuses and fuse boxes group ensures stable operation of numerous electrical circuits, supporting the proper functioning of the electrical system in Mercedes vehicles. Thanks to its OEM design, the module maintains full compatibility with the car's electrical architecture.

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

Function and role of the rear SAM module in the Mercedes C204

The rear SAM module in the Mercedes C204 acts as a central power management point in the rear of the vehicle. It is responsible for distributing power to individual circuits, integrating fuses, and controlling relays, which results in organized and predictable operation of electrical systems. Using the original Mercedes design allows for compliance with factory wiring diagrams and control logic.

Placement in the vehicle and importance for the electrical system

The module is designed for installation in the rear of the body, which shortens the length of wiring harnesses routed to rear consumers and reduces voltage drops. This placement:

• facilitates service and diagnostics of circuits located at the rear of the vehicle,
• organizes the routing of wires and fuses into one integrated assembly,
• reduces the risk of installation errors when replacing the component.

As a result, the electrical system remains clear for the diagnostician, and replacing the module does not require interference with the vehicle's main architecture.

Benefits of using an original Mercedes module

Using an original rear SAM module in the Mercedes C204 provides a number of practical operational benefits:

• factory fitment for electrical harnesses and connectors used in the specific model,
• maintenance of operating parameters in accordance with the vehicle manufacturer's specifications,
• stable power supply for consumers in the rear of the car, reducing the risk of random electrical faults.

This solution is particularly beneficial for repairs following damage to the installation, trunk flooding, or problems with rear circuit power supply, where replacing the complete module is often the fastest and most predictable method of restoring functionality.

Product characteristics and service application

The offered item is a used rear fuse and relay box module, sourced from a dismantled Mercedes vehicle. This type of part is frequently chosen by professional workshops as an economical yet technically sound solution for electrical system repairs. In service practice, the module is used, among other things, for:

• problems with power supply to selected circuits in the rear of the vehicle,
• mechanical or thermal damage to the existing fuse box,
• the need to restore the installation after a collision or interference with the wiring.

Before installation, standard system diagnostics and verification of the module's compatibility with the specific vehicle equipment version are recommended to maintain full system functionality.

System expansion – other Mercedes Fuses and fuse boxes

If you are planning a comprehensive repair or upgrade of the electrical system area in your Mercedes and need other components from the same group, such as additional boxes, fuse inserts, or power distribution modules, check the available parts in the Mercedes Fuses and fuse boxes category.

More about choosing used parts

When choosing a used control module, it is worth knowing the differences between original parts, replacements, and dismantled components – in terms of costs, quality, and matching by identification numbers. A detailed comparison can be found in the article Original, replacement, or used – which car parts are the most cost-effective?, which helps you consciously choose a repair strategy for your car's electrical system.