Door Module Mercedes W169 W245 Control Unit Front Right O/S A1699000400

Door Module Mercedes W169 W245 Control Unit Front Right O/S is a component from the Electronic control modules and controllers group, responsible for precise management of the right front door functions in vehicles of this series. The module works with the vehicle's electrical system, ensuring stable communication with other controllers and comfortable operation of the door equipment. This is a solution for users who expect efficient operation of electrical systems and the preservation of factory control logic.

Specifications and technical data

• SKU: A1699000400
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1699000400
• Substitutable numbers: A1699000400, A 169 900 04 00
• Location on the vehicle: Front, Right
• Category: ECUs & Computer Modules

Function and role of the front right door module

The described module plays a key role in managing the electrical functions of the right front door, such as window control, central locking, or communication with the body electrical system. As an element from the Electronic control modules and controllers category, it is responsible for the correct exchange of signals with the vehicle's main network, which translates into predictable operation of buttons and switches in the door.

The location on the vehicle in the front – right side zone allows for direct connection to the door wiring harness, limiting the length of wires and potential voltage drops. Thanks to this, the system works stably, and the reaction to driver commands remains fast and repeatable.

Compatibility and OEM fitment

The module has been designed specifically for use in W169 and W245 series vehicles, which means it fits the electrical and logical architecture of these models. Using a dedicated controller limits the risk of communication errors in the vehicle network and coding problems. The presence of the OEM part number and interchangeable numbers in the technical specification facilitates verification of compatibility with a specific car configuration.

For users and workshops, this means the possibility of using the module as a component to restore the correct operation of door systems after a failure, water damage, or mechanical damage to the previous controller. In practice, this translates into efficient restoration of functionality without the need for interference with the main electrical installation.

Benefits of using an original Mercedes module

Using a controller dedicated to a specific vehicle platform allows for maintaining the consistency of all comfort and safety systems. The module works with other control units in the vehicle, which minimizes the risk of software conflicts and accidental errors in the system memory.

• preservation of the factory logic of buttons and switches in the door,
• stable communication with the vehicle network and other controllers,
• possibility of using the existing door wiring harness without modifications,
• reduction of time needed for diagnostics and adaptation after installation.

For vehicle owners, this means predictable behavior of electrical systems and a lower risk of the fault returning after repair.

Product characteristics and practical application

The presented module is a Mercedes brand component, intended for installation in the front right door. Its design allows for integration with factory connectors, which facilitates service work and limits the need for installation modifications. In practice, installation comes down to replacing the controller and performing the necessary diagnostic procedures in accordance with the vehicle manufacturer's guidelines.

The product in used condition is a solution for users looking for a technically sound component while maintaining a favorable cost-to-functionality ratio. This is particularly important in the case of repairs where the priority is to restore full efficiency of door systems while maintaining compliance with the factory electrical architecture.

Support with selection and additional information

If you are planning a comprehensive repair or upgrade of the front door zone in your Mercedes and need other elements from the same group, such as comfort controllers, window modules, or central locking units, check the available parts in the Mercedes electronic control modules and controllers category.

When choosing between new parts, replacements, and aftermarket components, it is worth considering not only the price but also the fitment to the vehicle's installation and long-term stability. A detailed discussion of the differences between these solutions, along with practical examples and answers to the most frequently asked questions, can be found in the article Original, replacement, or used – which car parts are the most cost-effective?.

For those interested in a broader context of using original controllers and electronic modules in maintaining the character of a premium brand, the material describing the impact of properly selected components on maintaining the factory properties of the vehicle may also be helpful: Audi and emotions in their purest form. How do used parts help maintain the brand's DNA?.