2025 Audi A5 Apple CarPlay Audio Volume Reduction TSB

Audi has released Technical Service Bulletin (TSB) 2079977/2 to address a specific issue affecting the MMI Entertainment system in certain 2025 Audi models. Owners may notice that the audio volume reduction feature for media playback does not function correctly during navigation announcements or traffic reports, particularly when using Apple CarPlay.

This TSB, which supersedes Pending Service Solution (PSS) TSB 2078181, provides a software-based solution to restore the expected audio behavior. The problem is identified as a software issue within the vehicle's MMI system.

Symptoms

Owners of affected 2025 Audi A5, S5, Q5, and SQ5 vehicles may experience that "Audio volume reduction for media playback during navigation announcements or traffic reports sometimes does not work." This symptom is most noticeable when "The complaint occurs in particular when using Apple CarPlay."

This means that when navigation instructions or traffic updates are given, the media volume (music, podcasts, etc.) does not automatically lower, making it difficult to hear the announcements clearly. The 2025 Audi A5 Apple CarPlay audio volume problem can be disruptive during driving.

Diagnosis and Trigger Conditions

Audi workshops can reliably reproduce the 2025 Audi A5 Apple CarPlay audio volume issue by following a specific sequence of steps:

1. Verify that the audio volume reduction for navigation announcements and traffic reports is activated in the MMI audio settings.
2. Connect a mobile device to use Apple CarPlay and begin media playback through Apple CarPlay.
3. Start route guidance using the native navigation system in the MMI.
4. In the MMI navigation menu, select the next navigation instruction to trigger an announcement.
5. Activate voice control with Siri (by saying "Hey Siri") and then deactivate it.
6. Repeat step 4.

The expected audio volume reduction occurs during steps 4 and 5, but it fails to occur during the repeat of step 6, confirming the presence of the software glitch.

Repair Procedure Summary

The root cause of the 2025 Audi A5 Apple CarPlay audio volume issue is a software defect. The resolution involves updating the MMI software. Technicians are directed to follow the instructions provided in TSB 2079690, specifically updating to the combined software version 03.10.00/C (28.13.01) KD2.

This software update is designed to correct the MMI Entertainment system's behavior, ensuring that audio volume reduction functions as intended during navigation and traffic report announcements, even when Apple CarPlay is active.

Warranty Information

For vehicles still under warranty, the software update described in TSB 2079977/2 is covered. The service number for this operation is 9196, and the damage code is KD02. Labor operations include 0151 0010 for the software update, which requires connecting a battery charger, and 0151 0040 for the fixed rate software update, covering all necessary preliminary and follow-up work, including bus sleep cycle, calibration drives, and additional tasks. An additional 50 time units (0150 9999) can be claimed for each flash cancellation in the case of additional attempts after a flash abort.

If the vehicle is outside of its warranty period, this Technical Service Bulletin is for informational purposes only.

Important Warnings

Audi notes that the complaint will no longer occur in vehicles manufactured in week 42/25 or later, indicating that the software fix has been implemented in production for newer models. Owners of vehicles manufactured before this period should consult their dealership if they experience the described symptoms.

Owner Action

If you own a 2025 Audi A5, S5, Q5, or SQ5 and are experiencing problems with the audio volume not reducing during navigation announcements while using Apple CarPlay, you should contact your authorized Audi dealership. Inform them about the symptoms you are experiencing and mention Technical Service Bulletin 2079977/2. The dealership will be able to perform the necessary software update to resolve the 2025 Audi A5 Apple CarPlay audio volume issue.

Source: NHTSA ID 11027430