Fuse Box Mercedes W204 S204 Front Relay SAM Control Unit Module A2075402750

The Front Fuse Box with Relay Module SAM Mercedes W204 / S204 is a factory original part of the power and control system, responsible for current distribution and managing key circuits in the front compartment. Its design, compliant with manufacturer requirements, ensures stable operation of the electrical system and proper circuit protection using fuses and relays. This solution is intended for users who expect precise fit to the factory wiring harness and preservation of the vehicle's original electrical architecture.

Specifications and technical data

• SKU: rhd-A2075402750
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2075402750
• Substitutable numbers: A2075402750, A 207 540 27 50
• Location on the vehicle: Front
• Category: Fuses & Fuse Boxes

Function and Role of the Front SAM Module

The described fuse box with the front SAM module serves as the central power distribution point in the front section of the car. The following are integrated into a single housing:

• fuse sockets responsible for protecting individual circuits,
• a relay section controlling selected consumers,
• a SAM control module managing the operation of assigned systems.

This architecture allows for organized wiring, easier diagnostics, and faster localization of potential faults within the front part of the vehicle.

Purpose and Placement in the Vehicle

The component is designed as a front fuse box, mounted in the front area of the vehicle, according to the factory Mercedes design. Its placement in the vehicle has been chosen to:

• ensure the shortest possible wire runs to the main consumers in the front zone,
• facilitate service access to fuses and relays,
• maintain adequate protection against external factors within the front compartment.

As a result, the module works with the original wiring harness and is an integral part of the protection and control system in the given model.

Benefits of Using an Original Mercedes Module

Using an original fuse box with a SAM module in Mercedes vehicles offers a range of practical technical benefits:

• Factory Electrical Fitment – compliance with the installation parameters and control logic intended by the manufacturer.
• Compatibility with Diagnostic System – correct cooperation with factory error reading procedures and functional tests.
• Preservation of original installation architecture – no need for wiring modifications or adapter use.
• Predictable power system behavior – reduced risk of improper operation of consumers in the front part of the vehicle.

This solution is particularly recommended for repairs where preserving compliance with Mercedes service documentation and wiring diagrams is a priority.

Condition, Verification, and Service Application

The offered fuse box with SAM module is a used part, allowing for economical repair while maintaining the original manufacturer's specifications. This type of component is often chosen in situations where the existing fuse box has been damaged due to overload, flooding, or localized mechanical damage in the front part of the vehicle.

Before installation, a standard service procedure is recommended, including checking the condition of the connectors, verifying the correctness of the configuration, and matching it to the specific vehicle equipment version. A correctly selected and installed module allows for the restoration of full protection and control functionality in the front area of the car.

System Expansion and Related Components

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

For drivers who want to better plan maintenance work and optimize operating costs, a practical guide has been prepared – TOP 10 Most Frequently Replaced Parts in Your Car, which describes how to consciously approach the replacement of key components and keep your car in good technical condition.