2024-2025 Audi Bluetooth/Smartphone Interface Connection TSB

Audi has issued Technical Service Bulletin (TSB) 2079837/1 to address customer concerns regarding the Bluetooth and Audi smartphone interface in various 2024-2025 models. This bulletin, with a release date of October 30, 2025, indicates a forthcoming resolution for connectivity problems that can affect features like Apple CarPlay and Android Auto. Owners experiencing a 2025 Audi Q8 Bluetooth connection interrupted or similar issues in other affected models should be aware of this upcoming service information.

Symptoms of Connectivity Issues

Owners of affected Audi vehicles may observe several symptoms related to their infotainment and communication systems. These include the Bluetooth and/or Audi smartphone interface taking an extended time to connect, or experiencing frequent connection interruptions. Additionally, the reception bar in the Multi Media Interface (MMI) display may appear greyed out during these periods.

Specific complaints detailed in TSB 2079837/1 include:

• Apple CarPlay: No Data Transfer - The cell phone interface display for Apple CarPlay may show "control modules, services -> no data transfer", preventing applications from functioning correctly.
• Bluetooth Connection: Does Not Start - The Bluetooth connection for telephone operation may exhibit "functionality -> does not start", making hands-free calls or audio streaming impossible.
• Android Auto: Communication Interrupted - For Android Auto users, communication between the cell phone interface display and control modules or services may be "communication interrupted", leading to a non-functional system.
• Apple CarPlay: No Function - The Apple CarPlay interface may exhibit a complete lack of "functionality -> no function".
• Apple CarPlay: Communication Interrupted - Similar to Android Auto, Apple CarPlay might experience "control modules, services -> communication interrupted" with control modules.
• Bluetooth Connection: Communication Malfunction - The Bluetooth connection for telephone operation may suffer from "control modules, services -> communication malfunction".
• Bluetooth Connection: Misfire - Owners might notice the Bluetooth connection experiencing intermittent failures or "functionality -> misfire".
• Android Auto: No Function - The Android Auto interface may exhibit "functionality -> no function".
• Bluetooth Connection: No Function - The Bluetooth connection for telephone operation may show "functionality -> no function".
• Android Auto: No Data Transfer - The cell phone interface display for Android Auto may show "control modules, services -> no data transfer".
• Bluetooth Connection: Communication Interrupted - The Bluetooth connection for telephone operation may experience "control modules, services -> communication interrupted".

Technical Background and Diagnosis

Audi has identified the root cause of these connectivity issues as a software problem within the emergency call module control unit and communication unit, identified as Diagnostic Address (DA) 0075. Workshop findings confirm that the customer complaint can sometimes be reproduced during diagnostic testing.

Affected Control Units and Software

The primary control unit implicated in these issues is the 0075 - Emergency call module and communication unit. This module may be running software version 0723 or 0732. The resolution involves updating the MMI software that affects this unit.

Repair Procedure Summary

This Technical Service Bulletin (TSB) 2079837/1 serves to inform technicians about the issue and its underlying cause. The actual repair procedure involves updating the MMI software. Detailed instructions for this software update are provided in a separate document, TSB 2079416, titled "91 MMI: overview of customer service packages MLB and MQB for MIB3/ConBox/OCU3/AED2/gateway after UNECE deployment."

This update specifically targets the MIB3/ConBox/OCU3/AED2/gateway components across MLB and MQB platforms. Technicians are directed to follow the instructions in TSB 2079416 to perform the necessary software update to resolve the connectivity problems, including instances where a 2025 Audi Q8 Bluetooth connection interrupted is reported.

Important Warnings for Owners

Owners should be aware of the following critical information:

• Superseded Bulletin: TSB 2079837/1 replaces the previously issued Pending Service Solution (PSS) TSB 2079418, which also addressed the "91 MY25 Bluetooth/Audi smartphone interface takes a while to connect or connection interrupted" issue. Owners searching for information on the older PSS 2079418 should refer to this current TSB.
• Warranty Information: Audi explicitly states, "Please do not bill repairs under this TSB. This TSB is for reference only, billing info can be found in the relevant TSB for the software update instructions." This indicates that the software update, when performed according to TSB 2079416, should be covered under warranty or as part of a service action.
• Production Solution: There is no production solution applicable for this issue, meaning vehicles already produced will require the software update.

Owner Action

If you own a 2024-2025 Audi model on the MLB CL3B platform and are experiencing issues with your Bluetooth or Audi smartphone interface, such as slow connections, interruptions, or a greyed-out MMI reception bar, you should contact your authorized Audi dealership. Inform them of the symptoms you are experiencing and reference Technical Service Bulletin 2079837/1, as well as the related TSB 2079416, for the MMI software update. This will help ensure your vehicle receives the correct diagnostic and repair procedure to resolve the connectivity problem, especially if you encounter a 2025 Audi Q8 Bluetooth connection interrupted message.

Source: NHTSA ID: 2079837/1