Mercedes CL C216 W221 Rear Fuse Relay Box Control Unit A2219067100 A2219067000

Mercedes CL C216 W221 Rear Fuse Relay Box Control Unit is an original electrical system component designed for installation in the rear of the vehicle. As a component from the Fuses and fuse boxes group, it is responsible for organized circuit routing, protection of the installation, and stable operation of electrical consumers. The used control unit integrated with the box allows for an economical yet professional repair of the electrical system in Mercedes vehicles.

Specifications and technical data

• SKU: A2219067100
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2219067100
• Substitutable numbers: A2219067100, A 221 906 71 00, A2219067000, A 221 906 70 00
• Location on the vehicle: Rear
• Category: Fuses & Fuse Boxes

Purpose and function in the vehicle

The described rear fuse box with a control module is a component installed in the trunk area, where the vehicle's key electrical circuits converge. It is responsible for:

• distributing power to consumers located in the rear part of the body,
• protecting circuits using fuses and relays,
• integrating with the body control system and other electronic modules.

Thanks to its factory design, the module maintains full compatibility with the wiring harness and the architecture of systems used in CL C216 and W221 models, which facilitates diagnostics and subsequent maintenance.

Construction and technical properties

The element combines a fuse box and a control unit in one housing, which reduces the number of connections and connectors in the rear of the vehicle. This solution:

• reduces the risk of voltage drops at connections,
• simplifies the wiring layout,
• facilitates the location of potential faults.

The original design ensures proper placement of fuse and relay sockets, as well as adequate housing rigidity. This translates into stable operation of the electrical system even under conditions of intensive use and variable temperatures.

Benefits of using an original module

Using a factory rear fuse box with a control module in a Mercedes brings a number of practical benefits:

• Full electrical fit – compatibility with the vehicle's installation without the need for modifying harnesses or connectors.
• Consistency with vehicle software – the module works with diagnostic systems and other control units in the vehicle.
• Easier diagnostics – a clear layout of circuits in the rear of the car allows for faster localization of fault causes.
• Safe operation – properly selected electrical protections protect the installation against overloads and short circuits.

For workshops and users, this means a lower risk of problems after installation and the ability to maintain the factory operating parameters of the electrical system.

Condition, installation, and selection by OEM number

The offered element is in used condition, which allows for cost-effective restoration of the electrical system's efficiency while maintaining original build quality. Installation involves replacing the module in the place of the factory box in the rear of the vehicle and connecting the existing harnesses and mounts.

When selecting this type of component, it is crucial to compare the OEM number and interchangeable numbers with the vehicle data. To facilitate the verification process, it is worth using a practical guide – a detailed description of the steps, examples, and a list of questions for the seller can be found in the article Guide: how to choose the right car part by VIN and OEM number.

Related Mercedes electrical components

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