Mini R55 Footwell Light Module High ECU Lear PL3 FRM II 3450979

Specialist coding required

The item offered is a module that requires coding in the vehicle by a specialist.

The module is not plug&play.

Mini R55 Footwell Light Module High ECU Lear PL3 FRM II is a specialized component from the Electronic control modules and controllers group, responsible for advanced control of the footwell lighting and related comfort functions in Mini models. This OEM solution allows for restoring the proper operation of the electrical system in the vehicle's interior while maintaining factory parameters and operational stability.

Specifications and technical data

• SKU: 3450979-1
• Mark: Mini (Genuine OE)
• Condition: Used
• OEM Part Number: 3450979
• Substitutable numbers: 61353450979, 3450979, 5322888D2
• Category: ECUs & Computer Modules

Purpose and function of the module

The presented FRM II module is an electronic control unit responsible for managing lighting in the footwell area and cooperating with other comfort systems in the Mini R55. As a specialized ECU controller for lighting, it ensures precise lamp control, intensity regulation, and correct response to signals from the vehicle's electrical system, which translates into consistent operation of the entire interior electrical system.

Thanks to its factory architecture, the module works with the original wiring harness and other controllers, minimizing the risk of communication errors in the vehicle's bus. This is particularly important when replacing a damaged controller, where maintaining compliance with the factory configuration is essential.

Design and technical advantages

The FRM II module is designed as a compact electronic unit, integrating circuits responsible for lighting control and communication with the rest of the system in a single housing. The electronics used ensure stable operation under typical car operating conditions, including variable temperatures and electrical loads.

Key advantages of this solution include:

• factory compatibility with the Mini R55 electrical system,
• preservation of the original interior lighting logic,
• possibility of integration with existing comfort controllers,
• compact design facilitating installation in the footwell area.

Due to these features, the module represents a functional and technically consistent solution for electrical system repairs in the cabin area.

Application in diagnostics and repairs

The FRM II module is particularly useful in situations where the vehicle experiences interior lighting problems, controller communication errors, or malfunctions of comfort functions related to the footwell area. Replacing a damaged unit with a functional OEM component allows for:

• restoring proper operation of the footwell lighting,
• eliminating controller errors in the diagnostic system,
• maintaining compliance with the factory equipment configuration.

Due to the nature of the controller, installation by a workshop with access to appropriate diagnostics is recommended, which enables proper matching of the module to the specific vehicle and verification of its operation after installation.

Product characteristics and condition

The offered module belongs to the Electronic control modules and controllers group and comes from dismantling, which allows for cost-effective electrical system repair while maintaining original OEM quality. A used controller of this type is an attractive alternative to new parts, especially for older Mini models, where reasonable service costs are important while maintaining compatibility with the existing installation.

Thanks to its factory origin, the module retains the original connectors and pin layout, which facilitates installation and limits the need for wiring modifications. This is a solution that allows for an orderly and predictable restoration of the vehicle's lighting system efficiency.

Integration with other modules and service knowledge

When working on the electronics of premium segment vehicles, such as Mini or BMW, it is crucial to understand the cooperation between FRM modules, comfort controllers, and multimedia systems. To better plan repairs and avoid common mistakes when selecting used controllers, it is worth consulting expert materials. Practical tips on working with FRM modules and other controllers in structurally related vehicles can be found in 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?, which discusses, among other things, best practices when using parts from dismantling.

If you are planning a comprehensive repair or upgrade of the control electronics area in your Mini and need other components from the same group, such as light controllers, comfort modules, or ECU units responsible for lighting, check the available parts in the Electronic control modules and controllers Mini category.