Mercedes W212 Fuse Box Relay Rear SAM Control Unit Module A2129009622

The Mercedes W212 Fuse Box Control Module SAM is an advanced electrical system component designed for installation in the rear of the vehicle. It is responsible for power distribution and control of selected circuits, ensuring stable operation of the electrical system. This is a practical solution for users looking for a proven module for Mercedes E-Class W212 models.

Specifications and technical data

• SKU: A2129009622
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2129009622
• Substitutable numbers: A2129009622, A 212 900 96 22, 5DK011023-15, 5DK011023
• Location on the vehicle: Rear
• Category: Fuses & Fuse Boxes

Purpose and Function of the SAM Module

The fuse box with SAM module in the Mercedes W212 acts as a central management point for selected electrical circuits in the rear of the body. It is responsible for, among other things:

• circuit protection through appropriately selected fuses,
• power distribution to individual components,
• coordination of selected comfort and lighting functions,
• communication with other control units in the vehicle.

Thanks to the integration of fuse box and control module functions, this solution allows for organized wiring and easier diagnosis of potential faults.

Vehicle Placement and Installation Aspects

The presented module is designed for installation in the rear of the vehicle, which facilitates access to circuits located in the trunk and around the rear axle. This placement:

• shortens the length of electrical harnesses running to the rear of the car,
• simplifies service and fuse replacement,
• limits the risk of local circuit overloads.

The module is structurally adapted to the electrical architecture of the Mercedes W212, which facilitates installation in place of the factory element, maintaining the original wiring routing.

Product Characteristics and Benefits of Use

The offered fuse box with SAM module belongs to the category of Fuses and Fuse Boxes, meaning it is designed for the protection and stable operation of the electrical system. The use of this type of solution allows for:

• maintaining the factory control logic in the Mercedes vehicle,
• preserving compatibility with the original electrical architecture,
• reducing the risk of incorrect selection of a replacement with a different pin or circuit configuration.

The product comes from the Mercedes line, which promotes proper matching to the specific equipment version and compatibility with other control units in the vehicle.

Condition, Origin, and Fitment by Numbers

The module is offered as a used item, which is a cost-effective solution while maintaining the original manufacturer's specifications. For correct selection, it is recommended to verify compatibility by OEM part number and available replacement numbers – this helps reduce the risk of installing the wrong version of the control unit in a given W212 instance.

If in doubt, it is worth comparing the markings with the currently installed module or using VIN matching to ensure proper cooperation with the electrical system and other control units.

Mercedes Fuses and Fuse Boxes – Selection and Offer Expansion

If you are looking for other Mercedes fuses and fuse boxes compatible with various models of this brand, check out our dedicated category: Mercedes fuses and fuse boxes. You will find a wide selection of electrical system components there, which will help you complete the entire set of components.

More About the Cost-Effectiveness of Used Parts

If you want to better understand the differences between original, replacement, and used parts – including control modules and electrical system components – check out the article: Original, Replacement, or Used – Which Car Parts Are Most Cost-Effective?. This is a practical source of knowledge when planning vehicle repairs and upgrades.