BMW E90 Max Brose Footwell Light Module Control Unit ECU FRM3R 9241008

BMW E90 Max Brose Footwell Light Module Control Unit ECU is a factory-original electronic lighting control module designed for the electrical systems of the BMW 3 Series E90. This component from the Electronic control modules and controllers category is responsible for advanced management of the vehicle's lighting, ensuring consistent operation of lighting functions and communication with other vehicle systems. Thanks to its OEM design, this module is the right choice for professional repairs of the lighting installation in a BMW.

Specifications and technical data

• SKU: 9241008-1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 9241008
• Substitutable numbers: 9241008, 61359241008
• Category: ECUs & Computer Modules

Function and application of the FRM3R light controller

The FRM3R light controller acts as the central module managing exterior lighting and selected comfort functions in the BMW E90. It is responsible for, among other things:

• coordinating the operation of low beam, high beam, and parking lights,
• handling turn signals and hazard lights,
• cooperating with sensors and switches in the cabin,
• communicating with other controllers in the vehicle's network.

Thanks to its integration with the BMW electrical architecture, the module maintains factory lighting logic and compatibility with diagnostic systems.

Electronic construction and integration with the BMW installation

As an OEM BMW component, the FRM3R controller is designed to operate under the specific thermal and electrical conditions characteristic of the E90 series. The module's housing protects the electronic circuits from moisture and vibrations, and the connectors are matched to the original wiring harness, which facilitates installation and reduces the risk of installation errors.

The module works with the vehicle's factory software, enabling diagnostics via the BMW service interface. This allows for coding and adaptation of lighting settings in accordance with the configuration of a specific vehicle.

Benefits of using an original light ECU module

Using an original light controller in a BMW E90 provides a number of practical benefits:

• Full electrical compatibility – the module is adapted to the BMW installation and network architecture, which minimizes the risk of communication errors.
• Stable operation of the lighting system – maintaining factory lighting performance parameters and comfort functions.
• Diagnostic and coding capability – support via standard BMW service tools.
• Consistency with other controllers – correct cooperation with body, comfort, and safety modules.

This solution is particularly recommended for repairs following installation damage, water ingress, or logic failures of the controller, when it is necessary to restore the proper operation of the entire lighting system.

Condition, verification, and OEM selection

The offered module belongs to the group of used OEM electronic components, which allows for economical repair while maintaining the original BMW specification. Before installation, it is recommended to verify compatibility by OEM number and compare the hardware and software version with the currently installed controller to ensure proper cooperation with the specific vehicle's equipment.

A detailed guide on used automotive electronics will be helpful during selection and installation – the principles of matching by VIN, part numbers, as well as issues of coding and typical errors are described in the article Used automotive electronics on board – why is it worth choosing second-hand ECU modules and sensors?.

Expanding the control system in a BMW

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

For BMW model owners interested in a broader look at the differences between standard components and the sports line, as well as the possibilities of using used elements in modernization projects, you will find useful information in the article BMW M Performance: how do BMW M components differ from standard ones?.