2025 Audi MMI Audio Output Lost TSB 2080129/1

Symptoms of Lost MMI Audio Output

Owners of certain 2025 Audi models may experience a complete loss of audio output from the Multi Media Interface (MMI) system. This issue, described in Technical Service Bulletin (TSB) 2080129/1, can occur while driving or immediately after starting the vehicle. When the 2025 Audi MMI audio output lost problem occurs, it impacts various critical and convenience functions, making driving potentially less safe and certainly less enjoyable.

Specifically, the following audio functions may cease to work:

• Turn signals
• Parking aid alerts
• General warning tones
• Radio playback
• Media playback
• Navigation announcements
• Phone calls
• Spoken dialogues with the Audi assistant

The audio output cannot be restored by typical user actions such as pressing or turning the volume control, restarting media playback, or switching media sources. In some instances, the audio may return after the vehicle performs a "bus sleep cycle" (when the vehicle's electrical systems power down after being turned off) or after restarting the MMI system. Some drivers have also reported a "continuous whistling sound" emanating from the driver display when the issue is active. In more severe cases, the MMI system itself may crash and then automatically restart shortly thereafter.

Technical Background

Audi has identified the root cause of the 2025 Audi MMI audio output lost condition as a software issue within the MMI system. Modern vehicle infotainment systems are complex, relying on intricate software to manage various audio and communication functions. A bug or glitch in this software can lead to widespread audio failures, affecting multiple integrated systems simultaneously.

Production Solution

Audi has implemented a production solution to prevent this issue in newly manufactured vehicles. The complaint regarding the MMI audio output loss will no longer occur in vehicles manufactured in week 45/25 or later. This means that vehicles produced after a specific date in 2025 will have the necessary software corrections applied at the factory.

Repair Procedure Summary

To resolve the 2025 Audi MMI audio output lost issue in affected vehicles, a software update is required. Audi instructs technicians to perform Technical Service Bulletin (TSB) 2079690, titled "00 Combined software update 03.10.00/C (28.13.01) KD2." This update is comprehensive and addresses the underlying software fault.

The repair process involves updating the vehicle's software. This typically requires connecting a battery charger to maintain stable voltage during the update, as software flashing can be power-intensive. The procedure also includes preliminary and follow-up work, such as allowing for a bus sleep cycle, performing a calibration drive, and managing restarts if the software flashing process is interrupted. This ensures the update is applied correctly and the system functions as intended.

Warranty Information

This Technical Service Bulletin (TSB) 2080129/1 outlines the warranty claim procedures for addressing the MMI audio output issue. If your vehicle is outside of its warranty period, this bulletin serves as informational guidance only, meaning the repair might not be covered free of charge.

For covered repairs, dealers should use the following codes:

• Service Number: 9196
• Damage Code: KD02

Labor operations associated with this software update include:

• 0151 0010: Software update, including connecting a battery charger. This operation refers to a specific Service Repair Time (SRT) with associated tasks.
• 0151 00/0: A fixed rate for the software update, encompassing all required preliminary and follow-up work. This includes procedures like the bus sleep cycle, calibration drive, any additional work, and restarting the software update if the initial flashing attempt is aborted. This operation is allocated 130 Technical Units (TU).

Warranty claims must be submitted in accordance with the Audi Warranty Policies and Procedures Manual and are subject to review or audit by Audi Warranty.

Important Warnings for Owners

Owners should be aware of specific conditions regarding warranty claims and service procedures related to this software update. All warranty claims must strictly adhere to the guidelines outlined in the Audi Warranty Policies and Procedures Manual. Furthermore, when the combined software update is performed, time stamps are not required for billing under warranty. This allows technicians to work on other vehicles simultaneously, and the update can even be performed by non-productive personnel, potentially streamlining the service process.

Owner Action

If you own a 2025 Audi A5, Q5, S5, or SQ5 and are experiencing the 2025 Audi MMI audio output lost symptoms, such as no sound from turn signals, radio, or phone calls, or if your MMI system crashes, you should contact your authorized Audi dealership. Inform them about the symptoms you are experiencing and mention Technical Service Bulletin 2080129/1. The dealership will be able to diagnose the issue and perform the necessary software update to resolve the problem.

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Source: NHTSA ID: 11026287