Audi A4 B9 Bluetooth Telematics Control Unit Communications Module 4KE035282B

Audi A4 B9 Bluetooth Telematics Control Unit Communications Module is an original component from the Electronic control modules and controllers group, designed to support wireless connectivity in Audi vehicles. It enables stable integration of a phone with the infotainment system, improving daily usability and the ergonomics of multimedia and voice call management.

Specifications and technical data

• SKU: 4KE035282B
• Mark: Audi
• Condition: Used
• OEM Part Number: 4KE035282B
• Substitutable numbers: 4KE035282B, 4KE 035 282 B, 4KE035282G, 4KE 035 282 G
• Part type: Central Timing Module
• Category: ECUs & Computer Modules

Purpose and function of the Bluetooth module

The presented module is responsible for controlling Bluetooth communication in the Audi A4 B9 generation, providing support for phone calls and data transmission between the vehicle and mobile devices. As an element of the vehicle's electronic system, it works with the multimedia unit, hands-free system, and control buttons on the steering wheel or center console. By using an original module from the same family of parts, communication protocol compatibility, connection stability, and proper cooperation with the factory vehicle software are maintained.

Benefits of using an original Audi module

Choosing an original control module for the Audi A4 B9 allows you to maintain the consistency of the entire electronic system. In practice, this means:

• reliable cooperation with the factory multimedia system,
• preservation of control functions from the steering wheel or console,
• correct support for Bluetooth profiles provided by the manufacturer,
• reduced risk of communication errors and conflicts with other controllers. The original module from the Electronic control modules and controllers group is also a beneficial solution for post-accident repairs or troubleshooting issues related to the lack of phone connectivity with the car.

Application in service, diagnostics, and retrofitting

The Bluetooth module for the Audi A4 B9 is suitable both for standard replacement of a damaged component and for upgrading equipment with wireless connectivity features in vehicles that did not have an active module from the factory. In a service environment, this part is often used for:

• diagnosing phone communication faults,
• restoring full functionality of the infotainment system,
• equipment upgrades as part of retrofits. If you are interested in a broader context of using used controllers and modules in modern cars, it is worth reading an article describing a practical approach to repairing multimedia systems and controllers in premium vehicles: how to take care of iDrive systems and electronic modules in BMW using dismantled parts. For those planning more extensive vehicle equipment upgrades with additional electronic features, a guide on equipment modifications may also be useful: professional retrofitting in VAG and BMW group cars using dismantled modules.

Product characteristics and condition

The offered module comes from an Audi vehicle and is a used item, which makes it an attractive cost-effective solution while maintaining factory build quality. Such controllers, sourced from dismantling, are frequently chosen by workshops specializing in automotive electronics because they allow for economical repair while maintaining compliance with the original vehicle architecture. Before installation, a standard service procedure is recommended, including verification of compatibility with the specific equipment configuration and – if necessary – adaptation or coding of the module using appropriate diagnostic software.

Expanding the control system in Audi

If you are planning a comprehensive repair or upgrade of the comfort electronics and multimedia area in your Audi and need other elements from the same group, such as multimedia system controllers, comfort modules, or connectivity management units, check the available parts in the Audi electronic control modules and controllers category. Using original control modules throughout the system allows you to maintain configuration consistency, facilitates diagnostics, and reduces the risk of communication problems between individual controllers in the vehicle.