2021 Audi A6 Lower Display Flickering or Distorted TSB

Symptoms of Lower Display Flickering or Distortion

Owners of the 2021 Audi A6 may observe their lower MMI display exhibiting intermittent flickering or appearing distorted. This issue, described in Audi Technical Service Bulletin PSS 91 MIB3 (2066224/1), directly impacts the functionality and visual clarity of the infotainment system's lower screen. The problem manifests as visual anomalies, making the display difficult to read or interact with. This specific concern is known as the "Audi A6 lower display flickering" problem.

No Diagnostic Trouble Codes (DTCs) Stored

A key finding from workshop inspections regarding the 2021 Audi A6 lower display flickering issue is that no relevant Diagnostic Trouble Codes (DTCs) are stored in the vehicle's system. This means that standard diagnostic scans may not immediately identify the root cause, as the problem is not generating typical fault codes. Technicians are advised that the absence of DTCs does not indicate the non-existence of the display malfunction.

Technical Background

The underlying cause for the lower display flickering or distortion in affected 2021 Audi A6 vehicles is a software malfunction within the MIB3 system. This software anomaly leads to the visual irregularities observed on the lower screen. Audi is actively working on a permanent software update to address this issue.

Important Warnings for Owners

Audi has issued specific guidance for this condition under Technical Service Bulletin PSS 91 MIB3 (2066224/1). Owners should be aware of the following:

• Do Not Replace Components: It is crucial not to replace any components, such as the lower display unit itself, for this condition. Audi explicitly states that component replacement will not resolve the customer's concern, as the issue stems from software.
• Solution Forthcoming: A permanent software solution is currently under development and is expected to be available by the end of the fourth quarter of 2022.
• Not a Warranty Repair: This Technical Service Bulletin is informational only and is not applicable to any standard Audi Warranty claims.

Temporary Workaround for the Lower Display

While a permanent software fix for the 2021 Audi A6 lower display flickering is being developed, owners can perform a simple workaround to temporarily restore the correct functionality of the lower display. This involves rebooting the MMI system:

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 indicates the system has restarted.

This procedure should clear the flickering or distortion, at least temporarily.

What Owners Should Know

Owners experiencing the "Audi A6 lower display flickering" should understand that this is a known issue with a forthcoming software remedy. The TSB PSS 91 MIB3 (2066224/1) provides official guidance. While waiting for the permanent solution, the MMI reboot workaround can offer temporary relief. It is recommended to contact an authorized Audi service center for the latest information regarding the software update's availability and installation.

Source: NHTSA ID 10208495