Door Module Mercedes W204 W207 W212 Front Right O/S Control Unit A2129006518

Mercedes W204 W207 W212 Front Right Door Control Module is a factory part from the Electronic Control Modules and Controllers category, designed for precise management of the right front door functions in selected Mercedes models. The used controller ensures the preservation of the original operating logic of the electrical system, which translates into stable operation of the windows, lock, and other door systems.

Specifications and technical data

• SKU: A2129006518
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2129006518
• Substitutable numbers: A2129006518, A 212 900 65 18
• Location on the vehicle: Front, Right
• Category: ECUs & Computer Modules

Application and Function of the Door Controller

The presented module is intended for installation on the front, right side, where it is responsible for controlling the door electronics in Mercedes mid-range and luxury vehicles. As a component of the comfort system, it cooperates with the vehicle's body electronics, ensuring proper communication with the vehicle's central electronic system.

In practice, this means, among other things, controlling:

• the mechanisms of electric window regulators in the right front door,
• the central locking system and door lock on the passenger side,
• other functions assigned to the door, according to the specific car's configuration.

Benefits of Using an Original Mercedes Module

The original door module from the Mercedes range is designed to work with the factory electrical system, which facilitates installation and reduces the risk of compatibility issues. Using a controller from the same family as the factory-installed part allows for the preservation of:

• software consistency with other controllers in the vehicle,
• proper bus communication with the central body modules,
• appropriate response to signals from switches and sensors in the door.

For the user, this means stable operation of comfort functions and reduced need for additional electrical system modifications.

Condition, Verification, and Selection by Part Numbers

The module is offered as a used original part, sourced from dismantling. Such controllers, when correctly selected for a specific car, represent a cost-effective solution compared to new components, while maintaining factory-quality workmanship.

When selecting a door controller for your Mercedes, it is worth paying attention to:

• compatibility with the body generation (W204, W207, W212),
• placement on the vehicle – in this case, front, right side,
• manufacturer markings and reference numbers, which can be compared with the data in the specifications.

Additionally, matching by the vehicle's VIN number can be helpful, minimizing the risk of purchasing an incorrect module.

Mercedes Electronic Control Modules and Controllers – Expansion and Service

If you are looking for other Mercedes Electronic Control Modules and Controllers for your car, check out our dedicated offer: Mercedes electronic control modules and controllers. This will help you build a cohesive set of components, maintaining the vehicle's electrical system with a uniform manufacturer specification.

Why Choose Used Door Electronics?

In the case of door controllers, choosing a used part has particular economic significance – body electronics are expensive to purchase new, and at the same time, with proper selection and installation, they retain full functionality. More practical information on selecting and installing used modules can be found in the guide: Used Automotive Electronics Onboard – Why Choose Second-Hand ECU Modules and Sensors?

Summary

The Mercedes W204 W207 W212 Front Right Door Control Module is a solution for users who want to restore the functionality of the right front door electronics while preserving the factory architecture of the comfort system. The original nature of the module, its suitability for a specific vehicle placement, and the option to select by manufacturer markings make it a practical choice for repairs and servicing of body electronics in Mercedes cars.