Mercedes-Benz E-Class S211 W211 Fuse Box Terminal Connection Unit A2115452301

Mercedes S211 W211 Fuse Terminal Block is a specialized component from the Electronic Control Units and Controllers group, designed for installation in the rear of the vehicle. It is responsible for the organized routing of protective circuits and stable operation of the electrical system, which is crucial for the reliability of comfort and safety systems in a Mercedes.

Specifications and technical data

• SKU: A2115452301
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2115452301
• Substitutable numbers: A2115452301, A 2115452301, A 211 545 23 01
• Location on the vehicle: Rear
• Category: ECUs & Computer Modules

Function and Role in the Electrical System

The fuse terminal block in the rear of the body serves as a central power distribution hub for numerous receivers located at the rear of the car. A properly designed connection architecture allows for:

• clear separation of individual circuits protected by fuses,
• easier diagnosis of electrical faults in the rear of the vehicle,
• stable power supply to control modules and receivers located in the trunk and the rear of the cabin.

As a result, the block is an important element of the electrical infrastructure, supporting the proper operation of comfort systems, lighting, and other systems powered by the rear section of the installation.

Purpose and Fit for Mercedes S211 / W211

The presented terminal block has been designed with the Mercedes S211 / W211 platform in mind, taking into account the specific arrangement of wires, sockets, and mounting points used in these models. This means:

• factory fit for electrical harnesses in the rear of the body,
• preservation of original mounting geometry and connection points,
• compatibility with the fuse system intended for this generation of Mercedes.

This solution facilitates installation and maintains consistency with the factory service documentation, which is important for both workshops and users who care about compliance with manufacturer guidelines.

Benefits of Using an Original Terminal Block

Using an original fuse terminal block in the rear of the vehicle offers a number of practical operational benefits:

• Stable operation of the electrical system – properly routed and protected circuits reduce the risk of voltage drops and unintended power interruptions.
• Easier diagnostics – a clear layout of fuse sockets and terminals simplifies fault localization and inspection of individual circuits.
• Consistency with the factory design – maintaining the original power distribution concept promotes long-term, predictable vehicle operation.
• Safe integration with control modules – a correctly selected block works with other elements from the Electronic Control Units and Controllers group, minimizing the risk of overloads.

Installation in the Rear of the Vehicle

The placement of the block in the rear zone of the body was structurally planned by the vehicle manufacturer. Thanks to this:

• wiring to receivers located at the rear is shorter and more organized,
• servicing fuses responsible for the rear part of the installation is more convenient,
• the risk of accidental mechanical stress on wires and connectors is reduced.

This solution helps maintain the clarity of the installation and facilitates service work in the trunk area and the rear of the cabin.

Support for Selecting a Used Module

For components in the Electronic Control Units and Controllers group, correct matching to the specific vehicle configuration, considering equipment versions and electrical solutions used, is crucial. When selecting a used fuse terminal block, it is advisable to use manufacturer markings and service documentation to ensure full compatibility with the installation in a given Mercedes model.

If you want to better understand how to safely choose used electrical system components, control modules, and sensors, the following guide will be helpful: Used Automotive Electronics Onboard – Why Choose Second-Hand ECU Modules and Sensors?.

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 control modules, comfort controllers, or additional fuse blocks, check the available parts in the Mercedes Electronic Control Units and Controllers category.