Mercedes-Benz W216 W221 VST Seat Control Module Front Right Left A2169004400

Mercedes-Benz W216 W221 VST Seat Control Module Front Right Left is a specialized component from the Electronic control modules and controllers group, designed to operate the driver or passenger seat functions. This used component allows for the restoration of proper seat adjustment functionality in luxury Mercedes models, ensuring a comfortable and safe driving position.

Specifications and technical data

• SKU: A2169004400
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2169004400
• Substitutable numbers: A2169004400, A 216 900 44 00, KZ
• Location on the vehicle: Front, Left, Right
• Category: ECUs & Computer Modules

Purpose and function of the seat control module

The presented module is responsible for the electronic control of seat settings in the front of the vehicle, both on the left and right sides. In practice, this means supporting functions such as precise adjustment of the seat and backrest position, as well as cooperation with the vehicle's electrical system in terms of comfort and ergonomics. Thanks to this, the seat adjustment system can operate stably, without errors or communication interference with the car's other systems.

Compatibility with the Mercedes-Benz platform

The module has been designed with the electrical architecture of high-end Mercedes-Benz models in mind, which translates into a perfect fit for the vehicle's installation and logical integration with the controller network. Proper placement in the front zone, on the driver's or passenger's side, allows for maintaining the original wiring harness routing and correct mounting in factory installation points.

Benefits of using an original Mercedes module

Using an original seat control module in a Mercedes brings a number of practical benefits:

• maintaining full functionality of seat adjustment in the front-rear and vertical axes,
• consistency with the factory logic of comfort systems,
• reducing the risk of communication errors in the controller network,
• easier diagnostics using professional service testers.

Thanks to this, restoring the efficiency of the seat system is possible without interfering with the installation, which is particularly important in advanced premium class models.

Condition, verification, and practical application

The offered module is a used part, which in the case of Mercedes electronics often allows for an economical repair while maintaining high manufacturing quality. Before installation, standard vehicle system diagnostics and verification of the controller configuration in relation to the specific equipment version are recommended. In many cases, the installation is similar to a plug-and-play solution, although the final scope of work depends on the specifics of the given car model.

Expanding the comfort electronics system in Mercedes

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

To better assess when choosing a used controller is technically and economically justified, it is worth reading the guide: A second life for electronics – when is it worth choosing used engine controllers, comfort modules, and parking sensors?