Door Module Mercedes W166 Rear Door Right O/S Driver Side Control A2059000328

Door Module Mercedes W166 Rear Door Right O/S Driver Side Control is a specialized component from the Electronic control modules and controllers category, responsible for managing electrical functions in the rear right door on the driver's side. This is an OEM solution that allows for restoring full functionality of the vehicle's control systems without interfering with the electrical installation.

Specifications and technical data

• SKU: A1669005804
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1669005804
• Substitutable numbers: A1669005804, A 166 900 58 04
• Location on the vehicle: Rear, Right
• Category: ECUs & Computer Modules

Application and vehicle function

The presented door controller is designed for installation in the rear right door area of Mercedes W166 class vehicles. As a dedicated module, it supervises the operation of electrical components in the door, ensuring proper communication with the vehicle's main network and stable operation of associated comfort and safety systems.

The placement on the vehicle on the driver's side at the rear allows for precise matching of harnesses and connectors, which reduces the risk of installation errors and facilitates servicing. Thanks to this, the module can be used both for standard replacement of a damaged controller and for professional repair of the door installation.

Benefits of using an original door module

Choosing an original door module for a Mercedes translates into a number of practical advantages in daily vehicle operation:

• Full integration with vehicle electronics – the module works with the factory network architecture, which promotes stable system operation.
• Proper fit for harnesses and connectors – no need for electrical installation modifications.
• Possibility of using existing diagnostic procedures – easier configuration and verification of operation after installation.
• Solution consistent with the vehicle manufacturer's specifications – maintaining the original door control logic.

For workshops and service centers specializing in the Mercedes brand, such a module constitutes a practical basis for professional repair of door systems, without the need to use replacements of uncertain compatibility.

Product characteristics and installation

The module belongs to the Electronic control modules and controllers group, which means it works with the vehicle's communication bus and requires proper assignment to the specific car configuration. Installation should be performed in accordance with the manufacturer's procedures, taking into account the correct connection of all connectors and possible adaptation using an appropriate diagnostic tester.

The item is offered in a used condition, which allows for economical repair while maintaining the original specification. Before installation, it is recommended to verify compatibility with the vehicle based on identification data and compare the design with the removed module.

Selection, compatibility and technical support

To properly select a door module for a specific Mercedes unit, it is worth using the manufacturer's markings and vehicle data. Proper selection reduces the risk of communication problems in the vehicle network, errors in controlling windows, locks, or other functions assigned to the rear right door.

If you want to deepen your knowledge about the safe selection and installation of used controllers and other electronic components, the Global Parts guide will be helpful: Used automotive electronics – second-hand ECU modules and sensors, which discusses the principles of selection by part numbers, compatibility issues, and practical installation tips.

Related Mercedes Electronic control modules and controllers

If you are planning a comprehensive repair or upgrade of the electrical zone in your Mercedes and need other components from the same group, such as comfort controllers, door modules, or other body controllers, check the available parts in the Mercedes Electronic control modules and controllers category.