BMW 1 3 Series E81 E87 E90 Hands-free Electronics Charging Module MULF 6972678

BMW 1 3 Series E81 E87 E90 Hands-free Electronics Charging Module MULF is an original electronic communication module from the Electronic control modules and controllers group, designed for integrating the Bluetooth system in BMW vehicles. It enables stable, wireless communication between the vehicle and mobile devices, ensuring ease of use and consistency with the factory electronics architecture.

Specifications and technical data

• SKU: 6972678
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 9154358
• Substitutable numbers: 84216946393, 6946393, 84109111718, 9111718, 84109154358, 9154358, 84106975173841069726788421693633284106965406, 6975173697267869363326965406, 84216933284841069530448421693878484216933283, 6933284695304469387846933283, 841069583698421693894384216948404
• Category: ECUs & Computer Modules

Purpose and function of the module

The presented Bluetooth controller is a component of the factory BMW multimedia system, responsible for handling wireless connections in E81, E87, and E90 series vehicles. The module works with the car's electrical installation and the audio and communication system control unit, enabling:

• wireless pairing of a phone with the car's system,
• handling voice calls using factory buttons and interface,
• integration with the existing vehicle electronic infrastructure. By maintaining the OEM architecture, the module allows for consistent operation of all related onboard systems without the need for additional adapters or non-factory solutions.

Benefits of using an original BMW controller

Using an original BMW Bluetooth controller translates into high compatibility with the vehicle's installation and predictable system behavior. In practice, this means:

• reliable cooperation with factory wiring and connectors,
• proper communication with other modules in the electronic control group,
• preservation of functionality consistent with the vehicle's specific equipment. The module comes from the original BMW production line, which facilitates selection based on equipment configuration and vehicle software, and minimizes the risk of conflicts with other controllers.

Technical characteristics and vehicle integration

As an element of the Electronic control modules and controllers category, the Bluetooth controller is designed to operate within the vehicle's communication network, sharing data with other control units. The appropriate design of the housing and connectors allows for installation in the location provided by the manufacturer, while maintaining proper cable routing and electromagnetic interference requirements. Selecting the module according to the OEM part number and interchangeable numbers allows it to be matched to a specific car configuration, which is important given differences in equipment, software versions, or production years. This makes it possible to restore full Bluetooth system functionality after a failure or replacement of other installation components.

Product condition and practical application

The offered controller is a used item, which in the case of BMW OEM electronics represents a reasonable compromise between cost and quality. Modules of this type are designed with a high durability margin, so with proper selection and installation, they can continue to work effectively in the vehicle for a long time. This solution is suitable both for repairing an existing Bluetooth system and for supplementing equipment in vehicles that are factory-prepared for this type of controller. It is crucial to match the module to the specific car based on technical data and manufacturer markings.

Selection, compatibility, and technical support

When choosing a used Bluetooth module for a BMW, it is particularly important to pay attention to compliance with the OEM part number and the list of interchangeable numbers, as well as the vehicle's equipment configuration. Proper selection helps avoid communication problems in the vehicle network, diagnostic errors, or limited system functionality. If you want to deepen your knowledge about the safe selection of used controllers and sensors, how to verify compatibility, and good installation practices, check out the Global Parts guide: Used automotive electronics – how to consciously choose modules and sensors. If you are planning a comprehensive repair or upgrade of the onboard electronics in your BMW and need other components from the same group, such as comfort modules, audio system controllers, or connectivity management units, check the available parts in the BMW electronic control modules and controllers category.