2021-2022 Audi A6/S6 Lower MMI Display Flickering TSB

Audi has issued Technical Service Bulletin (TSB) PSS 91 MIB3, identified as 91 22 04 2066224/4, to address a software malfunction affecting the lower MMI display in certain 2021-2022 Audi A6 and S6 vehicles. This bulletin provides information and a temporary workaround for owners experiencing a flickering or distorted lower MMI display.

The TSB, which supersedes an earlier version (91 22 02 dated May 25, 2022), confirms that the issue stems from a software problem rather than a hardware defect. Owners searching for a solution to their Audi A6 lower display flickering will find guidance on a temporary fix.

Symptoms

Owners of affected 2021-2022 Audi A6 and S6 models may observe that "The lower display flickers intermittently or the display seems to be distorted." This visual anomaly can make the infotainment system difficult to use and detract from the driving experience. The TSB includes illustrative figures showing examples of both a distorted display and a flickering display.

No Diagnostic Trouble Codes (DTCs)

An important aspect of this issue is that no relevant Diagnostic Trouble Codes (DTCs) are stored in the vehicle's system. This means that traditional diagnostic scans may not immediately point to the problem, making the TSB crucial for identifying the root cause of the Audi A6 lower display flickering.

Underlying Cause

The technical background provided in TSB 91 22 04 2066224/4 indicates that a software malfunction is the cause of the lower display flickering or distortion. This clarifies that the issue is not due to a faulty physical component but rather an error in the vehicle's software programming.

Important Warnings for Owners

Audi explicitly states two critical points for owners and technicians regarding this issue:

• "Do not replace any components for this condition since this will not resolve the customer's concern." This warning prevents unnecessary parts replacement and associated costs, as the problem is software-based.
• "This TSB is informational only and not applicable to any Audi Warranty." Owners should be aware that this specific TSB does not cover warranty claims for the described condition.

Temporary Workaround

While a permanent solution is still under development, Audi provides a temporary workaround to restore the correct functionality of the lower display. If you are experiencing an Audi A6 lower display flickering, you can reboot the MMI system by following these steps:

1. Locate the volume/power button, typically found on the center console.
2. Push and hold this button for at least ten seconds.
3. Continue holding until you observe the upper MMI screen booting back up.

This procedure effectively restarts the MMI system, which should temporarily resolve the flickering or distortion issue.

Future Solution Status

Audi has indicated that a permanent solution is currently under development. The TSB states that a solution is expected by the end of the 4th quarter of 2022, though this timeline is subject to change. The bulletin will be updated with more information once a definitive solution becomes available.

Revision History

This Technical Service Bulletin has undergone several revisions to provide the most current information:

• Revision 1: Initial publication on February 23, 2022.
• Revision 2: Issued on April 25, 2022, with a revised header and updated software filter.
• Revision 3: Issued on June 6, 2022, with a revised header, updated software filter, and added coverage for Model Year 2022 vehicles.

NHTSA ID: 10214770