Mercedes W205 W213 Fuse Box Rear SAM Module Electrical Unit A2139068801

Mercedes W205 W213 Fuse Box Rear SAM Module Electrical Unit is an original electrical system component designed for installation in the rear section of vehicles in this series. As a component from the Fuses and fuse boxes group, it is responsible for organized power distribution and protection of electrical circuits in the rear area of the vehicle body. This solution allows for maintaining the factory installation architecture and facilitates the diagnosis of potential faults.

Specifications and technical data

• SKU: A2139068801
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2139068801
• Substitutable numbers: A2139068801, A 213 906 88 01
• Location on the vehicle: Rear
• Category: Fuses & Fuse Boxes

Function of the SAM module in the rear of the vehicle

The rear SAM module in Mercedes W205 and W213 models acts as a central management point for power and electrical protection in the rear area of the vehicle. It is responsible for the logical arrangement of fuses, integration with the electrical harness, and stable connections between individual circuits. Thanks to this, it reduces the risk of overloads and short circuits, and in the event of a failure, it allows for quick localization of the protected circuit.

The placement in the rear part of the body helps to shorten the length of wires to receivers located at the rear, which translates into lower voltage drops and more predictable behavior of the installation. The module's design is prepared for operation in conditions typical for the luggage compartment, taking into account vibrations and temperature changes.

Benefits of using an original fuse box

Using an original fuse box with a SAM module ensures compliance with the factory design of the Mercedes electrical system. This means matched connector geometry, appropriately selected current path cross-sections, and compatibility with the existing wiring harness. Such a solution facilitates installation and reduces the need for modifications, which is important both in authorized service centers and professional independent workshops.

For the end user, this means stable operation of systems powered from the rear of the vehicle, such as lighting, comfort elements, or selected safety systems. Original connection architecture also promotes proper cooperation with diagnostic systems, which facilitates subsequent service maintenance.

Purpose, installation, and application

The presented module is intended for installation in the rear part of the body, in the place provided by the vehicle manufacturer. The housing design and the arrangement of fuse sockets are adapted to the specific layout of the installation in W205 and W213 models, which allows for orderly wire routing and secure connector mounting.

When replacing, it is recommended to:

• maintain the order and values of fuses in accordance with the vehicle documentation,
• check the condition of contacts and harnesses before re-installation,
• perform a functional test of the circuits powered from the rear box after completing the work.

This approach minimizes the risk of installation errors and allows for full utilization of the capabilities provided by the factory power distribution module.

Product characteristics and condition

The offered item comes from the Fuses and fuse boxes group and is a Mercedes brand component, which guarantees compliance with the brand's factory design standards. The product is used, which in practice means that before installation, it is worth paying attention to the correct seating of connectors and the condition of the fuse sockets to ensure a secure electrical contact.

For workshops specializing in the Mercedes brand, this is a solution that allows for restoring the efficiency of the electrical system in the rear of the vehicle without the need to use replacements with uncertain fitment. Consistency with the original installation also facilitates subsequent computer diagnostics and interpretation of service diagrams.

Expansion of the protection system in a Mercedes

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

If you are interested in a broader context of selecting original electrical components and practical tips on searching for used OEM parts by identification numbers, an article describing the specifics of legendary power units and the principles of selecting components may be helpful – you can find it here: Audi five-cylinder engine – a legend from Quattro to RS3 and how to take care of it with original Audi parts.