Light Control BMW F01 F02 F04 F07 LCI Footwell Module ECU Unit FRM3 9345371

Light Control BMW F01 F02 F04 F07 LCI Footwell Module ECU Unit FRM3 is an original electronic lighting control module designed for modern BMW 7 Series facelift models. This specialized FRM3 controller ensures precise management of interior and exterior lighting functions, supporting stable electrical system operation and daily driving comfort. Thanks to its factory-spec ECU design, the module is fully adapted to the BMW electrical architecture, facilitating diagnostics and integration with other vehicle systems.

Specifications and technical data

• SKU: 9345371
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 9345371
• Substitutable numbers: 9345371, 61359345371, 6992947, 61356992947, 9236458, 61359236458, 9236540, 61359236540, 9313927, 61359313927, 9312510, 61359312510, 9236460, 61359236460, 9236461, 61359236461, 9236538, 61359236538, 9232177, 61359232177, 9383692, 61359383692, 9273633, 61359273633, 9229612, 9345374, 6823590, 9251976, 9290013
• Category: ECUs & Computer Modules

Purpose and function of the FRM3 module

The presented FRM3 footwell light controller is responsible for controlling exterior and interior lighting in BMW F-series vehicles, including the operation of parking lights, turn signals, interior illumination, and lighting-related comfort features. As a component from the Electronic control modules and controllers category, it communicates with the vehicle's data bus, sending and receiving signals from other control units, which allows for the coherent operation of the entire electrical system.

The FRM3 module is designed as an ECU unit dedicated to a specific BMW platform, ensuring correct operating parameters, appropriate function maps, and compatibility with factory software. Using an original controller reduces the risk of communication errors, lighting malfunctions, or warning messages appearing on the instrument cluster.

Benefits of using an original BMW module

Using an original FRM3 module instead of a faulty controller provides a number of practical benefits:

• Full integration with the electrical system – the module is structurally matched to the wiring harnesses and connectors used in the BMW F01, F02, F04, and F07 LCI.
• Stable lighting system operation – a properly functioning controller minimizes the risk of flickering lights, automatic shut-offs, or turn signal malfunctions.
• Support for comfort features – correct control of interior and footwell lighting improves vehicle usability, especially in night-time conditions.
• Easier diagnostics – the original ECU works with factory BMW service software, which facilitates error reading and potential programming.

Characteristics of the used controller

The offered module belongs to the group of used electronic BMW controllers, which allows for a significant reduction in repair costs compared to purchasing a new unit, while maintaining factory design and purpose. Choosing a tested module from dismantling is particularly beneficial in the event of a lighting system failure, when the priority is to quickly restore full vehicle functionality on a reasonable budget.

Due to the specific nature of FRM3 controllers, it is recommended to verify compatibility with the specific equipment version and car software before installation, and to perform appropriate adaptation or coding procedures at a specialized service center after installation. This approach ensures proper module cooperation with other controllers and minimizes the risk of recurring faults.

Application in service and tuning practice

The FRM3 module for the BMW F-series is suitable for both standard repairs after a failure and modernization projects where it is necessary to restore full lighting functionality after system modifications. Thanks to its factory ECU design, it can be used for:

• repairs after electrical system damage or footwell flooding,
• replacing a faulty controller after programming errors,
• restoring the original lighting configuration after unsuccessful modifications.

To better understand the specifics of FRM module operation and other controllers in BMW 3 and 5 series, as well as to learn best practices for using parts from dismantling, it is worth reading the article: Driving pleasure for years – how to take care of iDrive systems and electronic modules in BMW 3 and 5 series models using parts from dismantling?

Expanding the control system in BMW

If you are planning a comprehensive repair or modernization of the electrical system in your BMW and need other components from the same group, such as comfort controllers, body modules, or ECU units responsible for lighting, check out the available parts in the Electronic control modules and controllers BMW category.

Selecting the right controllers from this group allows you to maintain the consistency of the entire electronic system, which translates into predictable operation of comfort, lighting, and safety functions. A properly selected FRM3 module is an important part of this system, ensuring correct communication with other control units in the vehicle.