Mercedes SL R231 SAM Module Control Unit Fuse Relay Box Rear A2319007306

The Rear SAM Module / Fuse and Relay Box for Mercedes SL R231 is a factory original electrical system component responsible for advanced control and power distribution in the rear of the vehicle. As part of the Electronic Control Modules and Controllers group, it ensures consistent circuit management, communication with other controllers, and stable operation of many comfort and safety functions. A used, original component of this type allows for technically correct repairs without altering the factory installation architecture.

Specifications and technical data

• SKU: A2319007306
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2319007306
• Substitutable numbers: A2319007306, A 231 900 73 06
• Location on the vehicle: Rear
• Category: ECUs & Computer Modules

Function and Role of the Rear SAM Module in Mercedes SL R231

The Rear SAM module in the Mercedes SL R231 generation acts as the central hub for managing power and control signals in the rear body section. It is responsible for logical circuit switching, system protection through fuses and relays, and cooperation with other vehicle controllers via communication buses.

By integrating multiple functions into a single unit, this module enables:

• organized power distribution to receivers in the rear of the car,
• centralized management of circuits protected by fuses and relays,
• seamless cooperation with other controllers from the Electronic Control Modules and Controllers group.

Vehicle Placement and Diagnostic Significance

This component is designed for installation in the rear of the vehicle, which facilitates wiring harness routing and servicing of circuits related to the rear body zone. This placement aids in clear diagnostics – many common lighting, comfort, or power issues in the rear of the car can be quickly linked to this module.

In workshop practice, this means:

• easier access to key circuits in one location,
• the ability to narrow down the search area for electrical faults more quickly,
• more predictable repair times while maintaining factory manufacturer standards.

Benefits of Using an Original Control Module

Using an original Rear SAM module for the Mercedes SL R231 maintains consistency with the vehicle's factory configuration. Proper matching to the installation, connectors, and controller architecture reduces the risk of communication problems, vehicle network errors, or incorrect operation of comfort functions.

Key advantages include:

• factory electrical and mechanical fitment for the specific model platform,
• preservation of the original operating logic of vehicle systems,
• the ability to perform repairs in accordance with manufacturer service procedures.

Application of a Used Module in Professional Repair

A used module from the Electronic Control Modules and Controllers group offers a practical solution when both technical correctness and repair cost optimization are important. In many cases, it allows for the restoration of full electrical system functionality without the need for more expensive new components.

When planning repairs, it is also worthwhile to learn about best practices for working with automotive electronics. Useful tips regarding control modules can be found in an article describing iDrive systems and controllers in BMW vehicles – see the guide to servicing electronic modules using salvaged parts, which discusses universal principles for working with OEM electronics.

Expanding Repairs to Other Mercedes Control Modules

If you are planning a comprehensive repair or upgrade of the electrical system area in your Mercedes and require other components from the same group, such as additional control modules, fuse boxes, or auxiliary controllers, check the available parts in the Mercedes Electronic Control Modules and Controllers category.

If you want to reduce vehicle downtime, consider a broader use of used OEM components. You can find more information on this topic in the material: how the availability of used OEM parts affects repair time and workshop workflow.