Audi S4 B9 Interior Doorcard Courtesy Light Door Rear Left N/S 8W0919390E

Audi S4 B9 Interior Doorcard Courtesy Light Door Rear Left N/S is an original component from the Interior lighting group, designed for installation in the lower part of the door trim as a warning/courtesy light. It provides clear illumination of the entry area and improves the visibility of the open door, supporting the comfort and safety of the Audi interior.

Specifications and technical data

• SKU: 8W0919390E
• Mark: Audi
• Condition: Used
• OEM Part Number: 8W0919390E
• Substitutable numbers: 8W0919390E, 8W0 919 390 E
• Location on the vehicle: Right, Left
• Category: Interior Light Assemblies

Purpose and function in the Audi S4 B9

The described courtesy light for the rear left side has been designed specifically for compatibility with the door trim of the Audi S4 B9 generation. Mounted in the lower part of the door panel, it is responsible for:

• illuminating the threshold and the ground when the door is opened,
• increasing the visibility of the door edge for other road users,
• providing a consistent, factory-finish look for the vehicle's entry area.

Thanks to its design, this component is suitable for both replacing a single damaged light and symmetrically supplementing the lighting in the entire rear row of doors.

Construction and installation fitment

As a genuine Audi part, the light is prepared for operation within the existing electrical system without the need for modifications. The design features:

• factory mounting points in the door trim opening,
• a connector compatible with the Audi S4 B9 door wiring harness,
• optics adjusted for uniform light distribution in the lower door area.

This solution allows you to maintain the original character of the interior lighting and stylistic consistency with other interior elements.

Benefits of using original interior lighting

Using a factory courtesy light in the Audi S4 B9 offers a number of practical benefits:

• Precise fitment with the door trim, without play or the need to adjust openings.
• Correct light color and intensity, consistent with the rest of the interior lighting.
• Compatibility with vehicle comfort systems, including the logic for switching interior lights on and off.
• Versatility for use on both the left and right sides, which facilitates repair or upgrade planning.

For users who care about interior consistency and the proper operation of the electrical system, choosing an original component is a technically safe and predictable solution.

Condition of the item and service application

The offered light belongs to the group of used parts, which allows for an economical repair of the door lighting while maintaining the manufacturer's original specifications. It works well both as a replacement for damaged lighting in the rear doors and when replacing missing elements after bodywork or upholstery replacement.

Interior lighting expansion and additional materials

If you are planning a comprehensive repair or upgrade of the interior area in your Audi and need other elements from the same group, such as headliner lights, footwell lighting, or glove box illumination, check out the available parts in the Audi interior lighting category.

When planning work related to lighting, it is also worth checking out our guide on selecting and replacing modern light sources in a car – you will find practical tips in the article "See more and better – a complete guide to selecting and replacing used LED and Xenon headlights", which helps you take a conscious approach to vehicle lighting from a technical perspective.