2022-2026 Audi MIB3 Volume Control Not Working TSB

Audi has issued Technical Service Bulletin (TSB) 91 24 96 2072873/5 to address a common problem where the MIB3 infotainment system's volume control and skip buttons become unresponsive. This issue is primarily due to a software glitch within the vehicle's information electronics system.

The TSB, identified as 91 24 96 2072873/5 and also by the internal code U11B900, supersedes a previous bulletin, Group 91 number 24-67, dated October 16, 2024. The latest revision, Revision 4, includes updates for model year 2025 vehicles and refined service and warranty information.

Symptoms

Owners of affected Audi vehicles may notice the following issues with their infotainment system:

• The touch-operated volume control in the center console is not working.
• The volume control knob, as well as the skip buttons, are inoperable.

These symptoms directly impact the usability of the Audi MIB3 volume control and media playback functions.

Fault Codes / DTCs

When diagnosing this issue, technicians will typically find a specific Diagnostic Trouble Code (DTC) stored in the Information Electronics control unit, identified as -J794- (address word 005F). The relevant DTC is:

Code	Description	Module
U11B900	Volume control no communication (active/static)	Information Electronics -J794-

This DTC confirms a communication problem with the volume control, pointing to the underlying software fault.

Diagnosis / Trigger Conditions

The root cause of the inoperable Audi MIB3 volume control and skip buttons is a software issue. Audi has since implemented optimized software in current series production vehicles from week 10/2024 to prevent this problem in newer models.

Important Warnings

When performing the software update, it is crucial to adhere to specific guidelines to avoid further complications:

"It is imperative that you use the correct update medium based on the part number of the volume control unit installed in the vehicle. Failure to do so may result in malfunctions."

This warning highlights the importance of using the correct software version for your specific Volume Control Module to ensure proper functionality and prevent new issues.

Repair Procedure Summary

The repair involves updating the software for the Volume Control Module. This is performed using Method 2, which is a manual update process typically used when an SVM code or server issues are present. The procedure involves several steps:

1. Connect Diagnostic Equipment: An ODIS Tester is required to connect to the vehicle's diagnostic system.
2. Obtain SVM Code: The specific SVM code 693A001 must be used for the update.
3. Prepare Software Update Medium: The Volume Control Module software update is delivered via a USB Flash Drive. This software is downloaded from MirrorServer using the SD Creator Program. If not available for download, the update medium must be ordered as a part.
4. Perform Software Update: The Volume Control Module is updated according to the instructions detailed in TSB 2060523, titled "91 MIB3 Software Update Instructions."

The entire update process is estimated to take approximately 20 minutes, which includes 10 minutes for the software update itself and an additional 10 minutes for the related SVM work.

Required Tools or Parts

To perform this repair, technicians will need the following:

• ODIS Tester diagnostic tool.
• SVM code 693A001.
• Volume Control Module Software update on USB Flash Drive. The update medium must correspond to the installed Volume Control Part Number. Examples of part numbers include:
  • Installed Volume Control Part Numbers: 8Y0.919.616, 8Y0.919.616.A, 8Y0.919.616.B
  • SD Creator Part Numbers: 8W0.906.961.CR, 8W0.906.961.CS

Warranty Information

For warranty claims related to this TSB, the following details apply:

• Claim Type: Informational only if the vehicle is outside of any warranty coverage.
• Service Number: 9110
• Damage Code: 0040
• Labor Operations: Program operating unit (9195 2599, 20 TU) and GFF (0151 0060).
• Claim Comment: As per TSB 2072873/5.

All warranty claims must comply with the Audi Warranty Policies and Procedures Manual and are subject to review.

NHTSA ID: 11012521