Mercedes CL203 Rear Roof Alarm Motion Sensor Cover Trim Housing Grey A2038219551

Mercedes CL203 Rear Roof Alarm Motion Sensor Cover Trim Housing is an original interior trim component designed for installation in the rear roof section. Thanks to its precise fit to the headliner line, it provides an aesthetic cover for the area around the sensor and ensures a stable mounting for the alarm system component. It is a practical solution for users who want to restore full functionality and a consistent look to their Mercedes interior.

Specifications and technical data

• SKU: A2038219551-3
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2038219551
• Substitutable numbers: A2038219551, A 203 821 95 51
• Location on the vehicle: Rear
• Color: Grey
• Category: Headliners & Parts

Purpose and function of the component

The described housing is part of the Headliner and parts group, responsible for covering and stabilizing the alarm motion sensor in the rear roof area of the vehicle. Mounted in the rear part of the interior, it integrates with the headliner, ensuring the correct positioning of the sensor relative to the cabin and limiting its exposure to mechanical damage.

This component performs several key functions:

• ensures correct positioning of the motion sensor in the rear of the interior,
• masks the wiring and mounting holes in the headliner,
• stabilizes the alarm component, reducing vibrations and unwanted movement,
• helps maintain the factory appearance of the rear headliner section.

Color scheme and interior integration

The housing is finished in a grey shade, characteristic of many Mercedes CL/CLC interior configurations. As a result, the component blends harmoniously with the headliner and adjacent trim components, without creating a visual effect of an "add-on" or mismatched insert.

Choosing the right color is important not only for aesthetics but also for usability – a uniform headliner surface reduces distractions for the driver and passengers and helps maintain a consistent, factory-original character of the cabin.

Installation characteristics

The Mercedes CL203 Rear Roof Alarm Motion Sensor Cover Trim Housing has been designed specifically for Mercedes models, which translates into a factory fit to the shape of the headliner and mounting points. The design provides for installation in the rear part of the interior, in the location designated by the vehicle manufacturer.

When the component is correctly selected for the specific body version, the installation proceeds in an orderly manner, utilizing the original mounting points without the need to interfere with the headliner structure. This solution is particularly beneficial for professional post-accident repairs or interior restorations.

Condition and use in repairs

The component is sourced from dismantling and is offered as a used original Mercedes part. Such components are frequently chosen for repairs of older models, where the availability of new trim elements can be limited, and maintaining color and material consistency of the interior is of great importance.

If you are interested in the broader context of using parts from dismantling when servicing older cars, it is worth reading the article: No parts at the dealership? How to handle repairs of older models using parts from dismantling. You will find practical tips there on how to effectively plan repairs using original used parts.

Expanding repairs within the headliner area

If you are planning a comprehensive repair or upgrade of the headliner area in your Mercedes and need other elements from the same group, such as covers, grilles, or additional trim panels, check out the available parts in the Mercedes Headliner and parts category.