Mercedes W166 Front Door Card Courtesy Light Lamp Left Right N/O/S A0028201901

Mercedes W166 Front Door Card Courtesy Light Lamp Left Right is an original interior equipment component designed for installation in the front doors of Mercedes vehicles. The red door card illumination improves the visibility of the door edge, increases safety when opening, and aesthetically complements the upholstery line.

Specifications and technical data

• SKU: A0028201901-2
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A0028201901
• Substitutable numbers: A0028201901, A 002 820 19 01
• Location on the vehicle: Front, Left, Right
• Color: Red
• Category: Door Panels

Purpose and function in the vehicle

The front door card courtesy light is mounted in the door upholstery area on the driver's or front passenger's side. By being positioned on the left or right side of the vehicle, it improves the visibility of the open door edge, which is particularly important after dark or in poorly lit parking lots.

The red light color serves a signaling function – it informs other road users about open doors while harmoniously fitting into the interior styling characteristic of high-end Mercedes models.

Application in Mercedes door upholstery

The element has been designed as part of the Door Upholstery group, which means a perfect fit for the shape and mounting points of factory door panels. The light works with the vehicle's electrical system in the manner intended by the manufacturer, which facilitates installation and reduces the need for modifications.

• Dedicated application for the front doors of the vehicle.
• Can be installed on either the left or right side.
• Visual consistency with the original door upholstery.

Visual and functional characteristics

The red illumination of the light provides a clear warning signal when opening the door, while not dazzling users or other drivers. Thanks to its compact design, the element integrates well with the door card without disrupting the ergonomics of handles, pockets, or other upholstery components.

The used nature of the part makes it a cost-effective solution while maintaining the original manufacturer's specifications. It is a practical choice both for replacing a damaged light and for supplementing a missing element after previous interior repairs.

Benefits of using an original door card courtesy light

Using a factory element in the front doors allows for maintaining the consistency of the electrical system and the interior appearance. Proper fitment to the upholstery reduces the risk of looseness, rattles, or gaps that may occur with parts not intended by the manufacturer.

• Restoration of the factory door card lighting function.
• Improved safety when entering and exiting after dark.
• Aesthetic match to the Mercedes W166 interior styling.

If you are planning a comprehensive repair or upgrade of the door area in your Mercedes and need other elements from the same group, such as door card panels, decorative inserts, or additional lighting modules, check the available parts in the Mercedes Door Upholstery category.

If you are also considering savings on other repairs and are interested in the safe selection of components from the secondary market, the following guide article may be helpful: Fuel metering problems – how to safely choose a used injection pump and fuel rails.