Mercedes W204 Rear SAM Module Fuse Box Relay Control Unit A2049060205

Description

Mercedes W204 Rear SAM Module Fuse Box Relay Control Unit is an original module from the Fuses and fuse boxes category, designed for installation in the rear part of the vehicle. This component is responsible for organized power distribution and protection of electrical circuits, which translates into stable and predictable operation of the electrical system in your Mercedes.

Specifications and technical data

• SKU: A2049060205-4
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2049060205
• Substitutable numbers: A2049060205, A 204 906 02 05
• Location on the vehicle: Rear
• Category: Fuses & Fuse Boxes

Function and role of the rear SAM fuse box

The rear SAM fuse box in the Mercedes W204 acts as a local power center for selected circuits located in the rear of the vehicle body. It is responsible for the logical arrangement of fuses and relays, which facilitates diagnostics, maintenance, and potential modifications to the electrical system.

Thanks to its factory design, the module works in harmony with the vehicle’s electrical architecture, ensuring proper protection for individual power lines. A correctly selected SAM module limits the risk of overloads, short circuits, and uncontrolled voltage drops in the circuits located at the rear of the car.

Purpose and placement in the vehicle

The presented fuse box is designed for installation in the rear part of the vehicle, which allows for shortening the length of the electrical harnesses leading to components located at the rear of the body. This solution improves the clarity of the installation, facilitates service access, and reduces the susceptibility of wires to mechanical damage.

The placement of the module in the rear zone of the vehicle also promotes faster fault localization – a mechanic or electrician has direct access to the appropriate group of fuses without the need to interfere with the front part of the installation. This is a practical solution for users who want to keep the electrical system in an orderly and easy-to-maintain state.

Characteristics of the original Mercedes component

The rear SAM module comes from the Mercedes range, which means maintaining factory manufacturing standards and full compatibility with the W204 model design. The original module ensures proper placement of fuse sockets, correct connector geometry, and compatibility with factory electrical harnesses.

As an item from the Fuses and fuse boxes category, the product has been designed for safe operation in the vehicle compartment, taking into account current loads typical for the rear part of the installation. Using an original fuse box limits the risk of fitment issues, loose connections, or improper wire seating.

Condition, application, and benefits of installation

The offered module is a used part, which is a cost-effective solution for users looking for a factory component at a reasonable price while maintaining compatibility with the vehicle’s electrical system. Replacing a damaged or unstable SAM module with a functional unit allows you to restore the correct operation of protected circuits and reduce the risk of recurring electrical faults.

By installing an original fuse box in the rear of your Mercedes W204, you gain:

• factory fitment for harnesses and mounting brackets,
• an organized structure of protection in the rear zone of the vehicle,
• easier diagnostics and maintenance of the electrical system,
• more stable power supply for receivers located at the rear of the car.

Expanding the protection system in your Mercedes

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

For drivers interested in a broader approach to car modernization and using used components as a way to make technical improvements, an article describing modification possibilities using a sports brand as an example may be helpful – more information can be found in the material MINI John Cooper Works – what makes it stand out and how to improve your MINI?.