BMW 3 E91 2 Footwell Light Control Module ECU NSW PL2 FRM II Lear 9166711

BMW 3 E91 2 Footwell Light Control Module ECU NSW PL2 FRM II Lear is a specialized footwell lighting control module designed for use in BMW 3 Series E91 vehicles. As a component from the electronic control units group, it is responsible for the precise management of interior lighting functions, working in conjunction with the vehicle's electrical system and comfort systems.

Specifications and technical data

• SKU: 9166711-2
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 9166711
• Substitutable numbers: 61359166711, 9166711, EM
• Offset (ET):
• Category: Control Modules

Purpose and function of the module

The presented controller belongs to the Computers and controllers group and acts as an electronic management center for footwell lighting and associated circuits. The module interfaces with the body electrical system, sensor signals, and switches, ensuring stable operation of interior lights in accordance with BMW factory logic.

The FRM II Lear design was developed to maintain compatibility with the BMW E91 electrical architecture, which facilitates integration with other controllers in the vehicle. As a result, the module can be used as a replacement for the factory-installed component while maintaining proper communication within the vehicle's network.

Benefits of using a pre-owned controller

Choosing a pre-owned module from the lighting control group is a solution that allows you to combine reasonable costs with the preservation of the original system operating logic. Electronics sourced from dismantled BMW vehicles often represent an attractive alternative to new components, especially in the case of maintenance repairs or restoring full functionality to older models.

The FRM II Lear module can be used both for standard replacement of a faulty controller and in situations where it is necessary to restore proper lighting interaction with comfort systems. A properly selected component from this group helps reduce the risk of lighting malfunctions, flickering, or communication errors in the electrical system.

Selection, installation, and integration with the BMW electrical system

To ensure the proper operation of the footwell lighting controller, it is crucial to match the module to the specific vehicle equipment configuration and the version of the electrical system. In practice, this means paying attention to the type of controller used, its generation, and compatibility with other onboard computers.

During installation, it is recommended to:

• verify the module's compatibility with the vehicle's electrical system before physical installation,
• follow the service procedures provided for BMW lighting controllers,
• perform any necessary adaptation or programming using appropriate diagnostic software.

This approach minimizes the risk of communication errors between modules and ensures stable operation of the interior lighting.

Used electronics – what to look for

When choosing a pre-owned lighting controller, it is worth paying attention to the origin of the component, the condition of the connectors, and the service history. A properly selected module from the Computers and controllers group can effectively restore full system functionality without the need to invest in new components.

If you want to better understand when purchasing used automotive electronics is a reasonable solution, how to select control modules, and what to look for during installation, check out our guide: A second life for electronics – when is it worth choosing used engine controllers, comfort modules, and parking sensors?

Expanding upgrades within BMW controllers

If you are planning a comprehensive repair or upgrade of the body electronics area in your BMW and need other components from the same group, such as comfort modules, light controllers, or interior management units, check out the available parts in the BMW Computers and controllers category.