Door Module Mercedes W176 W246 Front Right O/S Control Unit Module A1669004402

Mercedes W176 W246 Front Right Door Module A1669004402 is an original part from the Electronic Control Modules and Controllers group, designed to control the functions of the front right door in Mercedes vehicles. It ensures the factory logic of door equipment operation, maintaining consistency with the car's electrical architecture and stable communication with other controllers.

Specifications and technical data

• SKU: A1669004402
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1669004402
• Substitutable numbers: A1669004402, A 166 900 44 02
• Location on the vehicle: Front, Right
• Category: ECUs & Computer Modules

Door Module Purpose and Function

The presented door module is dedicated for installation in the front – right side of the vehicle, in Mercedes models from the W176 and W246 series. As part of the comfort system, it is responsible for managing the electrical functions assigned to the front right door, cooperating with the body's wiring harness and the vehicle's central controllers.

Thanks to its construction compliant with factory Mercedes standards, the module integrates with the car's communication bus, allowing for correct data exchange with other controllers and maintaining the manufacturer-intended operating scenarios.

Benefits of Using an Original Module

Using an original door module to replace a damaged or unstable component restores the correct operation of electrical systems in the front right door without interfering with wiring harnesses or requiring additional modifications. This solution is particularly beneficial for:

• diagnosing faults related to the front passenger side door electrics,
• repairs after collisions where the door wiring harness has been damaged,
• communication problems between the door module and other body controllers.

An original part from the Electronic Control Modules and Controllers group helps maintain vehicle configuration consistency, which is important for both system stability and subsequent service diagnostics.

Product Characteristics and Installation

The module is designed for installation in the factory mounting location in the front right door, using original electrical connectors. This allows for the preservation of the existing wiring harness and the factory method of routing the installation.

The item comes from a used vehicle, which in practice means it is a part with parameters consistent with solutions used in the initial assembly. When selecting, it is recommended to verify compatibility by OEM number and vehicle configuration to ensure proper cooperation with the rest of the electronic system.

Selection, Compatibility, and Practical Tips

When choosing a door module for a Mercedes W176 or W246 series, it is crucial to match it to the specific equipment version and model year of the vehicle. In practice, it is worth paying attention to:

• vehicle placement – the module is dedicated exclusively to the front right body area,
• compatibility with the electrical architecture of the specific unit,
• consistency with other body controllers in terms of configuration.

To better understand the principles of selecting used controllers and sensors, including door modules, it is advisable to consult a guide dedicated to automotive electronics. Detailed information on selection by OEM number, hardware and software compatibility, and practical installation aspects can be found in the article Used Automotive Electronics Onboard – Why Choose Used ECU Modules and Sensors?.

Extended Repairs and Service Savings

Replacing a door module with a used OEM part is a way to reduce repair costs while maintaining factory quality. In many cases, this significantly lowers expenses compared to purchasing a new controller, while maintaining full system functionality.

If you want to plan your repair budget more broadly and learn strategies for sensible use of used components, the guide on optimizing service costs will be helpful: Rising Repair Costs vs. The Boom in Used Parts – How to Save on Car Service?.

Related Mercedes Electronic Control Modules and Controllers

If you are planning a comprehensive repair or upgrade of the body's electrical area in your Mercedes and need other parts from the same group, such as comfort controllers, door modules from other sides, or additional body controllers, check the available parts in the category Mercedes Electronic Control Modules and Controllers.