2025 Audi A5 MMI Audio Output Lost TSB 2080129/2

Audi has issued Technical Service Bulletin (TSB) 2080129/2 to address a concern where the Multi Media Interface (MMI) system may occasionally lose all audio output. This issue primarily affects 2025 Audi A5, S5, Q5, and SQ5 models. The TSB identifies the root cause as a software issue within the MMI system, leading to a complete loss of sound for various vehicle functions.

This problem, where the 2025 Audi A5 MMI audio lost functionality, can occur while driving or immediately after the vehicle is started. Owners experiencing this issue should be aware that a specific software update is available to rectify the problem.

Symptoms of Lost MMI Audio Output

Owners may notice a complete failure of all audio outputs from the MMI system. This can impact critical vehicle notifications and entertainment features, including:

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

When this issue occurs, the audio output cannot be restored by attempting to adjust the volume control, restarting media playback, or switching between different media sources. In some instances, the problem of the 2025 Audi A5 MMI audio lost may be temporarily resolved after the vehicle performs a bus sleep cycle or by manually restarting the MMI system. Some owners have also reported a "continuous whistling sound from the driver display" accompanying the issue. In other cases, the MMI system may crash and then automatically restart shortly after the audio loss occurs.

Technical Background: A Software Issue

Audi has confirmed that the underlying cause of the intermittent audio loss in the MMI system is a software issue. This means the problem is not due to a faulty hardware component but rather an error in the vehicle's onboard software.

Diagnosis and Trigger Conditions

The complaint can be reproduced in a workshop setting, allowing technicians to confirm the presence of the software anomaly. The intermittent nature of the audio loss, coupled with the inability to restore it through standard user controls, points to a system-level software malfunction rather than a simple user error or media-specific problem.

Repair Procedure Summary: Software Update

The prescribed remedy for the 2025 Audi A5 MMI audio lost issue is a software update. Audi instructs technicians to perform TSB 2079690, which is described as a "00 Combined software update 03.10.00/C (28.13.01) KD2." This update involves flashing the MMI system with the latest software version. During this procedure, it is essential to connect a battery charger to the vehicle to ensure stable power supply throughout the update process.

Important TSB Information and History

This Technical Service Bulletin, 2080129/2, supersedes and replaces the previous Pending Service Solution (PSS) TSB 2077866, which also addressed the "91 PSS MMI system: Audio output occasionally lost completely" concern. The current TSB 2080129/2 was initially published on November 22, 2025 (Revision 1) and later revised on December 16, 2025 (Revision 2) to correct the labor operation code related to warranty claims.

Warranty Information

For eligible vehicles, the software update to resolve the MMI audio loss is covered under warranty. The specific warranty details are as follows:

• Service Number: 9196
• Damage Code: KD02
• Labor Operations:
  • 0151 0010: Software update, including connecting a battery charger.
  • 0151 0040: Fixed rate for the software update, covering all necessary preliminary and follow-up work, including bus sleep cycle, calibration drive, and additional work (130 Time Units).

If your vehicle is outside of its warranty period, this Technical Service Bulletin serves as informational guidance only. All warranty claims must adhere to the Audi Warranty Policies and Procedures Manual.

What Owners Should Do

If you own a 2025 Audi A5, S5, Q5, or SQ5 and are experiencing the MMI audio output loss, you should contact an authorized Audi dealer. Inform them about the symptoms you are observing, specifically mentioning the 2025 Audi A5 MMI audio lost issue. The dealer will be able to perform the necessary software update as outlined in TSB 2080129/2 to resolve the problem.

Production Solution

Audi has implemented a production solution for this issue. Vehicles manufactured in week 45 of 2025 or later will no longer experience this particular MMI audio output problem, as the updated software has been integrated into the production line.

Source: NHTSA ID 11027382