Mercedes W169 W203 W211 2 OBD Diagnostic Plug Cover A2025402373

Mercedes W169 W203 W211 OBD Diagnostic Plug Cover is an original trim component designed for the aesthetic and functional protection of the diagnostic port in selected Mercedes models. Thanks to its factory-fit design, the cover ensures a seamless interior look and protects the OBD port from accidental damage. It is a practical solution for users who want to keep their cockpit tidy and well-organized while maintaining full functionality of the service port.

Specifications and technical data

• SKU: A2025402373-2
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2025402373
• Substitutable numbers: A2025402373, A 202 540 23 73
• Category: Trim

Purpose and function of the OBD port cover

The presented cover is an interior trim component responsible for discreetly concealing the OBD 2 diagnostic port in Mercedes W169, W203, and W211 series vehicles. Its purpose is to:

• protect the port from dust, small debris, and accidental mechanical contact,
• maintain a consistent stylistic line of the lower dashboard,
• facilitate the location of the service port while keeping the cabin tidy.

Thanks to its factory design, the cover works with the original mounting points, which translates into a stable fit and no unwanted looseness during operation.

Construction, fitment, and installation

The cover belongs to the Trim, decorative strips, and moldings category, which is why its shape and geometry are precisely matched to the factory panel in a given Mercedes model. The design features:

• dedicated mounting points for the vehicle's original clips,
• a profile matched to the shape of the lower cockpit,
• an opening that provides convenient access to the diagnostic port without the need to remove the entire component.

This solution allows for quick installation and removal during service work, without interfering with the electrical installation or the structure of the dashboard. Factory-grade fitment reduces the risk of rattles and unwanted noises while driving.

Characteristics of the used component

The offered cover comes from a used vehicle, which means it may show signs of normal wear typical for interior components. At the same time, it is an original Mercedes part, which in practice translates into:

• dimensional compatibility with the factory panel,
• preservation of the correct color and texture of the material in the context of the given model year and trim version,
• certainty of fitment to the dashboard structure without the need for modifications.

For many users, choosing a used component is a reasonable compromise between cost and maintaining the original look of the interior, especially in the case of older model generations.

Application in service and diagnostics

A functional, complete OBD 2 port cover is important not only for aesthetic reasons but also for practical ones. In daily use, it:

• protects the port from being accidentally snagged by the driver's or passenger's foot,
• reduces the risk of loosening the pins in the socket, which could hinder communication with a diagnostic tester,
• ensures orderly access to the port during periodic inspections and error code reading.

For workshops and users performing basic diagnostics themselves, keeping this component complete facilitates work and helps maintain the vehicle's interior in a technically sound condition.

Expanding equipment and selecting other components

If you are planning a comprehensive repair or upgrade of the cockpit trim area in your Mercedes and need other components from the same group, such as covers, decorative strips, or additional panels, check out the available parts in the Mercedes Trim, decorative strips, and moldings category.

If you are interested in a broader context of operating vehicles of this brand, including issues related to all-wheel drive and typical components, it is worth reading an article describing various AWD systems – xDrive, 4Matic, quattro, or 4Motion – a comparison of AWD systems from BMW, Mercedes, Audi, and VW. This will help you better understand how individual systems interact with the vehicle's electronics, of which the OBD port is a service part.

Summary

Mercedes W169 W203 W211 OBD Diagnostic Plug Cover is a practical, original trim component that helps keep the cabin tidy while protecting the diagnostic port. Thanks to its factory fit and well-thought-out design, it serves as a functional addition to the interior, facilitating both daily operation and vehicle service.