BMW E87 LCI Light Control Footwell Module ECU MAX Brose FRM3R PL2 Lear 9390491

BMW E87 LCI Light Control Footwell Module ECU MAX Brose FRM3R PL2 Lear is a specialized module for controlling lighting and electrical functions in the footwell area, designed for BMW 1 Series LCI models. This is an original BMW group component that ensures stable communication with the electrical system and the proper operation of lights and related comfort systems. Thanks to its ECU design, the module works with the vehicle's bus, enabling precise control of lighting functions.

Specifications and technical data

• SKU: 9390491
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 9390491
• Substitutable numbers: 61359390491, 9390491, 61356827064, 6827064, EM
• Category: Other Interior Parts & Accessories

Purpose and function of the FRM3R module

The presented FRM3R controller is responsible for managing exterior and interior lighting in the body area and the footwell, working in conjunction with the BMW E87 LCI electrical system. As an electronic module, it supervises, among other things, power supply to lights, signaling, and communication with other controllers in the vehicle, which translates into consistent operation of comfort and safety systems.

Thanks to its integration with the vehicle network, the module acts as a central control point for selected circuits, reducing the risk of communication errors and facilitating diagnostics. This solution allows for maintaining factory lighting logic and compatibility with BMW software.

Construction, manufacturer, and compatibility

The module was developed to OEM standards by specialized BMW suppliers, such as Brose and Lear, which guarantees the preservation of the original hardware architecture and appropriate build quality. The housing and connectors are adapted to the factory BMW wiring harness, which facilitates installation in the dedicated location in the footwell area.

As a BMW group component, the module is designed to work with factory diagnostic and service software. Once properly coded, it can be integrated into the existing vehicle configuration, maintaining compatibility with the equipment functions of a specific unit.

Condition, installation, and service application

The offered controller is a used item, making it an attractive cost-effective alternative for electrical system repairs in the BMW E87 LCI. Before installation, it is recommended to verify compatibility with the vehicle's equipment and prepare for coding in accordance with BMW service procedures.

The module is particularly useful in situations where the vehicle experiences lighting problems, communication errors in the lighting area, or damage to the original controller. Replacing it with an original component from the same family allows for minimizing interference with the installation and maintaining factory operating parameters.

Benefits of using an original BMW module

• Original ECU architecture matched to the BMW E87 LCI installation.
• Possibility of integration with factory software and diagnostic tools.
• Reduced risk of incompatibility compared to universal replacements.
• Simplified diagnostics of faults in the lighting and comfort system.

Using an original controller from the FRM3R family allows for maintaining the consistency of the vehicle's electronics, which is particularly important in modern BMW models where most functions are linked to the communication bus.

Expanding knowledge and selecting other components

If you are planning a comprehensive repair or upgrade of the electronics and lighting area in your BMW and need other components from the same group, such as control modules, wiring harnesses, or sensors, check out the available parts in the Other BMW category.

When working with advanced vehicle electronics, it is worth expanding your knowledge about the structural differences between sports and standard versions of cars – a helpful resource may be the article on our blog: Audi RS vs other models – what is hidden under the hood and chassis?, which discusses, among other things, the impact of advanced braking systems and chassis on the selection of spare parts.