BMW E90 LCI Footwell Light Module Control Unit ECU FRM3R PL2 9240531

BMW E90 LCI Footwell Light Module Control Unit ECU FRM3R PL2 is an original electronic control module for footwell lighting and related functions, designed for facelifted BMW 3 Series models. As a component from the Electronic control modules and controllers group, it is responsible for precise management of selected electrical circuits, communicating with other controllers in the vehicle. Using a pre-owned controller of this type allows for a technically sound repair of the electrical system while maintaining the factory BMW electronics architecture.

Specifications and technical data

• SKU: 9240531
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 6827064
• Substitutable numbers: 6827064, 61356827064, 9390491, 61359390491, 61358886836, 8886836, 61359383050, 9383050, 61359340339, 9340339, 61359308371, 9308371, 61359286887, 9286887, 61359263803, 9263803, 61359249086, 9249086, 61359240533, 9240533, 61359241008, 9241008, 61359230445, 9230445, 61359224598, 9224598
• Category: ECUs & Computer Modules

Purpose and function of the FRM3R module

The presented FRM3R footwell controller is an electrical system component responsible for operating the footwell lighting and related comfort functions in the BMW E90 LCI. The module works with the vehicle's communication network, receiving signals from other units and sensors, and then controlling the appropriate lighting circuits. This ensures consistent operation of comfort and safety systems, in accordance with the manufacturer's factory specifications.

Benefits of using an original BMW module

Using an original module from the Electronic control modules and controllers group ensures a proper fit for the BMW electrical system and compatibility with the vehicle's software. In practice, this means:

• maintaining the factory logic of lighting and comfort functions,
• proper communication with other controllers in the vehicle's network,
• the ability to perform diagnostics using standard BMW service tools,
• reducing the risk of errors resulting from the use of unsuitable replacements.

A used OEM module allows for an economical repair while maintaining a high level of compliance with the factory electronics specification.

Selection, compatibility, and replacement numbers

This FRM3R controller has a dedicated OEM part number and a set of interchangeable numbers, which makes it easier to match to a specific BMW E90 LCI configuration. When selecting a module, it is crucial to compare the markings with the existing controller and verify compatibility with the vehicle's equipment (e.g., lighting type, body version, range of comfort functions). The presence of multiple reference numbers increases the chance of finding the right variant for a given car, while maintaining proper cooperation with the rest of the installation.

To better understand when choosing a used controller is justified and how to safely approach the purchase of automotive electronics, it is worth reading our guide: The second life of electronics – when is it worth choosing used engine controllers, comfort modules, and parking sensors?.

Condition, verification, and preparation for installation

The offered module is a used item, which in practice means it comes from disassembly and has been verified for suitability for further use. Before installation, this type of controller usually requires:

• checking the vehicle's electrical system for previous damage,
• potential adaptation or coding to the specific BMW vehicle,
• checking the correctness of communication with other control units after connection.

With proper installation and configuration, the module can restore full functionality of the footwell lighting system and related comfort functions, without the need for interference with the factory wiring harness.

Expanding the control system in a BMW

If you are planning a comprehensive repair or upgrade of the comfort electronics area in your BMW and need other elements from the same group, such as light controllers, comfort modules, or electrical system management units, check the available parts in the BMW electronic control modules and controllers category.

For users who want to make informed decisions regarding the purchase of used electronic components, especially in the context of more extensive repairs, additional support can be found in specialized service guides and consultations with a workshop experienced in working with BMW electronics.