Fuse Box Mercedes W211 CLS C219 Rear SAM Module Relay Control Unit A2115458601

Fuse Box Mercedes W211 CLS C219 Rear SAM Module Relay Control Unit is an advanced, factory-original control and protection unit responsible for power distribution and the control of specific circuits in the rear of the vehicle. This component from the Fuses and fuse boxes category ensures organized power management, stable operation of the electrical system, and facilitates fault diagnostics. Thanks to its design tailored to the W211 / C219 platform, the module integrates perfectly with the factory wiring harness.

Specifications and technical data

• SKU: A2115458601
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2115458601
• Substitutable numbers: A2115458601, A 211 545 86 01, 5DK008047, 5DK 008 047
• Location on the vehicle: Rear
• Category: Fuses & Fuse Boxes

Purpose and function in the vehicle

The described module is a rear fuse box integrated with a SAM control unit, designed for installation in the rear of the vehicle body. It is responsible for logical power distribution, circuit protection via fuses, and controlling selected electrical consumers in the trunk area and the rear of the vehicle. This solution reduces wire length, minimizes voltage drops, and improves the clarity of the entire installation.

By utilizing the dedicated Mercedes electrical architecture, the module communicates with the vehicle's diagnostic system, which facilitates fault location and reduces service time. This is particularly important in premium-class vehicles, where the number of electrical circuits and functions is extensive.

Construction and technical advantages

The box combines fuse sockets and control electronics in a single housing, allowing for compact installation and a reduced number of connections. The layout of current paths and connection points is optimized for the specific platform, minimizing the risk of incorrect connection and making service more predictable.

Key technical advantages include:

• dedicated connectors for the factory wiring harness,
• clear division of circuits into sections,
• integrated control of selected rear vehicle functions,
• design allowing for quick removal and replacement if necessary.

This combination of protection and control functions helps maintain system integrity and reduces the number of separate modules in the vehicle, which translates into greater system reliability.

Placement and installation aspects

The component is designed for installation in the rear of the vehicle, in the location specified by the manufacturer. This ensures proper ventilation, protection against moisture, and service access. Installation involves mechanically seating the module in the factory bracket and connecting the appropriate electrical wiring connectors.

In practice, replacing the rear fuse box is often used as an effective method for resolving power supply issues for selected consumers, such as rear lighting or trunk equipment. Using an original unit from the same design family allows for maintaining the consistency of electrical parameters and communication with other control units.

Condition and service application

The offered module comes from a used vehicle, making it an attractive cost-effective alternative to a new component while maintaining factory specifications. This type of solution is often chosen by professional workshops specializing in the repair of premium vehicle electronics, where both technical compatibility and repair cost optimization are important.

Replacing the rear fuse box / SAM module is recommended in cases of mechanical damage, signs of overheating on current paths, communication problems within the vehicle network, or recurring power supply faults in the rear of the car. Using an original solution allows for restoring proper system operation without the need for installation modifications.

Integration with other Mercedes electrical components

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, power distribution modules, or fuse housings, check the available parts in the Mercedes Fuses and fuse boxes category.

For those interested in a broader approach to upgrading premium vehicles and using used components to improve equipment, guide materials may be useful – you can find more on this topic in the article MINI John Cooper Works – what makes it stand out and how to improve your MINI?, which shows how to consciously select used components for advanced modifications.