Mercedes W204 Fuse Box Relay Control Unit Electric Module SAM A2049006709

Mercedes W204 Fuse Box Relay Control Unit Electric Module SAM is an original component from the Fuses and fuse boxes group, designed for advanced power management and electrical circuit control in the vehicle. This factory-original SAM module integrates the fuse box function with electronic control, ensuring stable and predictable operation of the electrical system in the Mercedes W204. By maintaining the manufacturer's specifications, it provides a solid foundation for professional electrical system repairs.

Specifications and technical data

• SKU: A2049006709
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2049006709
• Substitutable numbers: A2049006709, A 204 900 67 09
• Category: Fuses & Fuse Boxes

Function of the SAM module in the Mercedes W204

The SAM module plays a key role in power distribution and monitoring various vehicle electrical circuits. As an integrated fuse box with control electronics, it:

• distributes voltage to individual consumers in the vehicle,
• protects the installation against overloads and short circuits through properly selected fuses,
• cooperates with other control units, ensuring consistent operation of comfort and safety systems,
• simplifies electrical fault diagnostics by centralizing multiple circuits into a single module.

As a result, the Mercedes W204 SAM module is an essential component for the stable operation of lighting, interior equipment, and other consumers powered by the main electrical system.

Application and installation fitment

The presented item comes from the Mercedes product line, which ensures the preservation of factory electrical architecture and compatibility with the wiring harnesses and connectors used in the W204 model. The original design of the SAM module allows for:

• secure seating in the designated mounting location,
• proper connection of factory plugs and connectors without the need for modifications,
• maintenance of compatibility with the operating parameters of other control units in the vehicle.

This ensures that the installation process is orderly and the risk of problems resulting from non-original solutions is minimized.

Characteristics of the used product

The offered SAM module is a used component, which in practice means it has been removed from a vehicle, and its design and function remain consistent with factory solutions. This type of part is particularly attractive to users and workshops that:

• are looking for an original control unit at a better price than a new replacement,
• want to maintain the consistency of the electrical system with the manufacturer's solutions,
• prefer proven OEM components over uncertain alternatives.

Choosing a used SAM module allows for an economical repair without compromising the factory specifications of the electrical system.

Benefits of using an original fuse box

Using an original module in the Fuses and fuse boxes group in a Mercedes W204 translates into a number of practical benefits:

• preservation of the safety logic and circuit layout intended by the manufacturer,
• easier diagnostic work using factory diagrams and service tools,
• reduced risk of incorrect fuse selection and load distribution,
• consistency with the vehicle's technical documentation.

For workshops specializing in the Mercedes brand, such a module is a practical solution that facilitates maintaining the vehicle to the standards set by the manufacturer.

Repair expansion and additional information

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

To better plan your service budget and learn about the advantages of using original dismantled components, it is worth checking out our guide on selecting used brake system components: Brake calipers under the microscope – how to reduce repair costs by choosing proven recycled parts.