Mercedes W211 Trunk Fuse Box Electric Base Relay Box SAM Module A2115455101

Mercedes W211 Trunk Fuse Box Electric Base Relay Box SAM Module is an advanced electrical relay base designed for precise circuit management in the rear of the vehicle. It is responsible for stable power distribution, protection control, and logical management of selected electrical functions, which is crucial for the reliability of the electrical system in the Mercedes E-Class W211. Thanks to its OEM design, the module maintains full compatibility with the factory wiring harness and the vehicle's electrical architecture, ensuring predictable system performance.

Specifications and technical data

• SKU: A2115455101
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2115455101
• Substitutable numbers: A2115455101, A 211 545 51 01, 5DK 008 047-45
• Category: Fuses & Fuse Boxes

Purpose and function in the vehicle

The presented item belongs to the Fuses and fuse boxes category and serves as a central power distribution point in the trunk area. The SAM module integrates fuse sockets, relays, and control electronics into a single housing, which simplifies the installation architecture and facilitates the diagnosis of potential faults.

In practice, this means organized circuit routing, reduced voltage drops, and the ability to quickly locate problems in the event of a specific circuit failure. Stable operation of the protection system translates into a lower risk of uncontrolled power interruptions to receivers located in the rear of the vehicle.

Construction and advantages of the OEM solution

The Mercedes W211 Trunk Fuse Box Electric Base Relay Box SAM Module has been designed by the vehicle manufacturer to fit the Mercedes electrical system perfectly. This means properly selected connectors, a logical layout of current paths, and compatibility with factory service diagrams. The original design makes work easier for electricians and diagnosticians because the module's operating parameters are known and described in the technical documentation.

Key benefits of using an OEM solution include:

• secure fit with the wiring harness and mounting points in the trunk,
• predictable behavior in the vehicle's diagnostic system,
• preservation of factory protection logic and circuit load capacity,
• easier circuit identification during measurements and repairs.

Condition, origin, and service application

The offered module is a used part, sourced from dismantling, which represents a reasonable compromise between repair costs and maintaining original construction quality. Such components are commonly used in professional workshops specializing in the Mercedes brand, especially when repairing installations after mechanical damage, flooding, or power surges.

Replacing the trunk fuse box module is recommended, among other situations, when:

• there are visible signs of overheating or melting of the sockets,
• there are recurring power supply problems with selected circuits in the rear of the car,
• mechanical damage to the housing or connectors has occurred,
• diagnostics indicate an internal fault in the SAM module.

Benefits of installation in a Mercedes

Using an original SAM module in the trunk of a Mercedes W211 allows for restoring the proper operation of electrical systems without the need to modify wiring or use additional adapters. Plug-and-play within the factory architecture reduces repair time, minimizes the risk of installation errors, and facilitates subsequent service maintenance.

Thanks to the preservation of the factory circuit division and properly selected protections, the installation remains consistent with the vehicle manufacturer's specifications, which is important for both operational safety and the durability of other electrical components.

Expansion of repair scope and additional information

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, sockets, or protection modules, check out the available parts in the Mercedes Fuses and fuse boxes category.

When selecting used body elements and electrical equipment, it is also worth checking out practical tips regarding the quality of parts from dismantling – you will find them in the article "Replacing body parts with used ones – can body parts from dismantling look like new?", which discusses the approach to purchasing components for premium brands, including Mercedes.