Mercedes W204 SAM Control Unit Module Fuse Box Relay Rear A2049060105

The Mercedes W204 Fuse Box SAM Control Module is a factory original electrical component designed for installation in the rear of the vehicle. This specialized module, from the fuses and fuse boxes category, is responsible for power distribution and monitoring selected circuits, ensuring stable and predictable system operation. A used original component helps maintain compatibility with the factory electrical architecture of a Mercedes, facilitating diagnostics and servicing.

Specifications and technical data

• SKU: A2049060105
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2049060105
• Substitutable numbers: A2049060105, A 204 906 01 05
• Location on the vehicle: Rear
• Category: Fuses & Fuse Boxes

Purpose and Function of the SAM Module

The presented control module belongs to the group of components responsible for power management and circuit protection in the vehicle. As a fuse box integrated with a control module, it manages selected electrical consumers located in the rear of the body, such as lighting, specific comfort features, or power outlets, depending on the car's specific configuration.

Its placement in the rear of the vehicle helps shorten wiring harnesses, reduce voltage drops, and facilitate the division of the electrical system into logical sections. This keeps the Mercedes' electrical system clear and allows for quicker fault localization.

Benefits of Using an Original Fuse Box

Using an original SAM module from the fuses and fuse boxes group in a Mercedes W204 offers several practical benefits:

• Preservation of factory control logic and electrical protection,
• Compatibility with the original vehicle software and network architecture,
• Proper fitment of connectors, wiring, and mounting points,
• Reduced risk of compatibility issues compared to aftermarket alternatives.

A used OEM part is a sensible choice for repairs when the goal is to maintain original functionality at controlled service costs.

Vehicle Placement and Installation Aspects

The module is designed for operation in the rear of the body, requiring access to the appropriate luggage compartment or side niche, depending on the body version. Installation involves correctly seating the fuse box in its factory mount and precisely connecting the wiring harnesses and fuses according to the service documentation for the specific vehicle.

When replacing, it is recommended to:

• Disconnect the battery before starting work,
• Check the condition of contacts and connectors for corrosion or overheating,
• Transfer the fuse configuration according to the vehicle's equipment card,
• After installation – verify the correct operation of the managed circuits.

Application in Mercedes Vehicles

The offered module is intended for Mercedes W204 family models that utilize a rear fuse box integrated with a control module. In practice, this means it can be used for repairs after electrical damage as well as for replacing a worn-out component.

By retaining its original design, the module works well with factory diagnostic systems, simplifying subsequent error code reading and ongoing service maintenance.

Complementary Offer and Additional Materials

If you are looking for other Mercedes fuses and fuse boxes for your car, check out our dedicated category: Mercedes fuses and fuse boxes. There you will find a wide selection of electrical system components tailored for various models of this brand.

When planning a more extensive vehicle upgrade, it's also worth exploring our guide on aftermarket interior equipment: Premium interior for half the price – used seats, steering wheels, and multimedia. This article helps you make informed choices when selecting used components, paying attention to compatibility, installation, and investment value.