Audio Amplifier BMW F20 F21 F22 Harman Kardon Active Sound Design Unit 9390396

BMW F20 F21 Harman Kardon Amplifier Module Controller Active Sound 9343317 is a specialized component from the Electronic Control Modules and Controllers group, designed for factory BMW audio systems with Harman Kardon sound. This used module allows for the restoration of proper Active Sound system operation and maintains consistency with the original electronics architecture in your BMW 1 Series F20/F21.

Specifications and technical data

• SKU: 9390396
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 9390396
• Substitutable numbers: 9390396, 65129390396, 2622892, 65122622892, 6827159, 65126827159, 6805821, 65126805821, 6809354, 65126809354, 9362445, 65129362445, 9326555, 65129326555, 9381088, 65129381088, 9367812, 65129367812, 9353021, 65129353021, 9352264, 65129352264, 2622503, 65122622503, 6834089
• Category: ECUs & Computer Modules

Purpose and Function in the BMW Audio System

The presented Active Sound amplifier and controller is an OEM component specifically designed to work with the factory Harman Kardon system in BMW F20 and F21 models. It is responsible for amplifying the audio signal, sound equalization, and generating and processing engine sound-related audio within the Active Sound system, as per the manufacturer's specifications.

By using an original module, full integration with the vehicle's bus, communication with other controllers, and proper handling of comfort and multimedia functions are maintained. This solution helps avoid problems typical of aftermarket replacements, such as communication errors or incorrect sound maps.

Benefits of Using an Original Control Module

Using the original Harman Kardon amplifier in BMW F20/F21 provides a range of practical benefits:

• Preservation of the audio system's factory sound characteristics,
• Proper cooperation with the Active Sound system and vehicle electronics,
• Compatibility with the electrical system without the need for modifications,
• Possibility of diagnostics and coding using standard BMW service tools.

For workshops and users, this means stable system operation, predictable repair outcomes, and easier maintenance of vehicle configuration consistency. Choosing such a module is particularly important when replacing a damaged controller due to flooding, power surges, or internal failure.

Product Characteristics and Vehicle Compatibility

The offered component belongs to the Electronic Control Modules and Controllers group, meaning it plays a crucial role in the digital management of the audio signal and the Active Sound function. The module is intended for BMW vehicles factory-equipped with the Harman Kardon system, specifically for F20 and F21 body styles, where it collaborates with other comfort and multimedia controllers.

The product has an assigned OEM part number and a set of interchangeable numbers, which facilitates verification of compatibility with a specific car configuration. Before purchasing, it is advisable to compare the markings on your old module with the data in the specifications to ensure the controller will work correctly with the installation and software in your particular BMW model.

Condition, Origin, and Service Application

The module is used, which in practice means it comes from a vehicle disassembly and has been verified for its suitability for further use. Such components are often chosen by workshops specializing in the BMW brand, as they allow for economical repairs while maintaining the original manufacturer's specifications.

The Harman Kardon amplifier with Active Sound function is suitable for both typical replacement of a damaged controller and for restoring full audio system functionality after interventions in the installation or after replacing other electronic modules. A correctly selected and coded controller allows for the reproduction of factory sound settings and stable operation of the entire system.

Technical Support and Further Information on BMW Electronics

If you want to better understand how electronic modules work in BMWs and how to safely use parts from disassembly for multimedia system repairs, it is worth consulting specialized materials. Practical tips on working with iDrive modules, FRM controllers, or engine controllers can be found in the article Years of Driving Pleasure – How to Care for iDrive Systems and Electronic Modules in BMW 3 and 5 Series Models Using Parts from Disassembly?, which discusses good service practices and compatibility issues.

If you are planning a comprehensive repair or upgrade of the comfort and multimedia electronics area in your BMW and need other components from the same group, such as audio controllers, comfort modules, or other management units, check the available parts in the BMW Electronic Control Modules and Controllers category.