BMW X5 E53 Interior Roof Reading Lamp Alarm Sensor Module Cover 8379941

Visual condition of the part 

The product shows signs of use visible in the photos. 

BMW X5 E53 Interior Roof Reading Lamp Alarm Sensor Module Cover is an original Interior lighting component responsible for illuminating the rear interior and integrating with the factory security system. Thanks to its integration with the alarm sensor, it ensures consistent operation of both the lighting and the anti-theft system, which translates into user convenience and improved vehicle security.

Specifications and technical data

• SKU: 8379941-2
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 8379941
• Substitutable numbers: 8379941, 65758379941, 8258046, 51448258046
• Location on the vehicle: Rear
• Category: Interior Light Assemblies

Purpose and function in the BMW E53

The presented roof reading lamp is designed for installation in the rear interior of the BMW E53 series, where it is responsible for local cabin illumination and cooperation with the factory alarm. Its placement in the rear section of the headliner allows for convenient use of the lighting by rear-seat passengers, while the integrated alarm sensor supports monitoring of the vehicle's interior space.

This component is particularly important for:

• restoring full interior lighting functionality after the original module is damaged,
• diagnosing and repairing the alarm system when the issue involves the sensor in the headliner,
• comprehensive interior restoration of the BMW E53 while maintaining the original manufacturer's specifications.

Construction and integration with the vehicle's electrical system

The roof reading lamp with alarm sensor is factory-designed to work with the BMW electrical system, which facilitates installation and reduces the need for wiring modifications. The unit combines the lighting module and the alarm system sensor in a single housing, ensuring proper mounting geometry and the correct detection field inside the cabin.

Key design advantages include:

• dedicated fitment for the BMW E53 headliner,
• preservation of factory mounting points,
• compatibility with original cabin lighting controls and the alarm system.

Condition, origin, and benefits of using OEM parts

The offered roof reading lamp comes from a BMW vehicle and is an OEM-class component, which means it maintains factory performance parameters and compatibility with vehicle systems. As a used part, it provides a cost-effective solution while maintaining original build quality and interior fitment.

Using the original interior lighting module with an alarm sensor allows you to:

• minimize the risk of communication issues within the electrical system,
• maintain a consistent look for the headliner and trim elements,
• preserve the correct operation of the alarm system in the rear cabin area.

Practical installation and diagnostic tips

When replacing the roof reading lamp with an alarm sensor, it is worth paying attention to the condition of the connectors, the wiring harness routed in the headliner, and the correct seating of the component in the mounting hole. Proper installation is important not only for lighting quality but also for the effectiveness of the alarm sensor, which must have a clear "field of view" inside the vehicle.

In case of problems with cabin lighting or incorrect alarm operation (false triggers, lack of response to movement in the rear interior), replacing this module is one of the primary diagnostic steps, allowing for a quick verification of the factory solution's condition.

If you are planning a comprehensive repair or upgrade of your BMW's interior and need other parts from the same group, such as ceiling lamps, ambient lighting modules, or additional light points, check out the available parts in the BMW Interior Lighting category.

For users who want to better understand the importance of correctly selected lighting components in a car, our blog guide will be useful – See more and better – a complete guide to selecting and replacing used LED and Xenon headlights, where we discuss the selection of original BMW lighting components and their impact on driving safety.