Mercedes W204 Fuse Box Rear SAM Module Electrical Fuse Unit A2049067702

Mercedes W204 Fuse Box Rear SAM Module Electrical Fuse Unit is an original electrical system component designed for installation in the rear of the vehicle. As a component from the Fuses and fuse boxes group, it is responsible for organized power distribution and the protection of electrical circuits in the Mercedes vehicle. This used module allows for an economical yet technically correct repair of the electrical system without interfering with the factory installation architecture.

Specifications and technical data

• SKU: A2049067702
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2049067702
• Substitutable numbers: A2049067702, A 204 906 77 02
• Location on the vehicle: Rear
• Category: Fuses & Fuse Boxes

Purpose and function in the vehicle

The fuse box mounted at the rear of the vehicle operates in an area where numerous circuits responsible for, among other things, rear lighting, power sockets, or selected comfort modules are concentrated. Using a dedicated component for the Mercedes W204 series allows for maintaining:

• consistency with the factory electrical diagram,
• correct layout and labeling of fuse slots,
• adequate power reserve for individual circuits.

As a result, the electrical system remains easy to service, and the diagnostics of potential faults are simpler and more predictable.

Design and benefits of using an original fuse box

The original fuse box for the Mercedes has been designed as an integral part of the installation, taking into account current loads, temperature conditions, and limited mounting space in the rear of the body. The use of this component ensures:

• stable sockets for fuses and relays,
• properly routed power paths inside the module,
• compatibility with the electrical harness intended for the W204.

Such a solution reduces the risk of contact overheating, accidental connection looseness, and uncontrolled voltage drops in the power circuits.

Vehicle placement and mounting aspects

The fuse box is intended for installation in the rear of the vehicle, which requires maintaining proper harness routing and correct seating in the factory mounting points. Using a dedicated component for the Mercedes W204 facilitates:

• maintaining the original wire routing,
• avoiding mechanical stress on the connectors,
• maintaining adequate protection against moisture and contaminants in the installation area.

Thanks to this, the entire system operates under conditions similar to the factory ones, which promotes long-term, stable operation.

Characteristics of the used component

The used Mercedes W204 Fuse Box Rear SAM Module Electrical Fuse Unit is a reasonable choice for repairs where it is crucial to maintain the original electrical system design while optimizing costs. This type of component, sourced from dismantling, allows for:

• restoring the factory power system without the need for modifications,
• maintaining compliance with the manufacturer's service documentation,
• reducing the risk of problems resulting from the use of non-original solutions.

This is a practical solution in the event of damage to the original box due to overload, flooding, or mechanical damage in the rear of the vehicle.

Related components and additional technical information

Replacing the fuse box in the rear of the Mercedes W204 often involves inspecting the condition of harnesses, connectors, and the fuses and relays themselves. It is worth paying attention to:

• cleanliness and condition of plug contacts,
• correct values of the fuses used,
• absence of signs of overheating within the sockets.

If you are planning a comprehensive repair or upgrade of the electrical installation area in your Mercedes and need other elements 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.

When planning broader modernization work on the vehicle, including elements affecting ride comfort and handling, the article discussing the selection of used suspension components may be helpful – you can find it here: Standard vs. sports suspension – design differences and selection of used parts.