2021-2022 Audi HVAC Blower Setting Adjustment Not Possible

Audi has issued Technical Service Bulletin (TSB) 2071139/2 to address an intermittent problem affecting the HVAC blower setting adjustment in various 2021-2022 Audi models. This TSB supersedes an earlier bulletin, Group 87 number 23-48, and provides a straightforward solution for owners experiencing this specific issue.

Symptoms

Owners may occasionally notice that the fan control strip, located in the lower HVAC screen, does not appear. This strip is typically used for increasing or decreasing the fan speed. When this symptom occurs, the center strip for the fan control remains blank, and as a result, the fan speed cannot be controlled. Figure 1 in the original TSB illustrates the normal appearance of the HVAC control panel, while Figure 2 shows the control panel when the fan speed strip is blank.

This issue with the Audi HVAC blower setting is described as difficult to reproduce, indicating its intermittent nature. The technical background suggests that this is an intermittent symptom within the infotainment system, which Audi is currently analyzing for a potential service solution.

Important Warnings

Audi explicitly states: "Do not replace any parts should the vehicle exhibit this symptom. Parts replacement will not solve this issue. Any parts replaced for this condition under warranty will be debited." This is a crucial warning for owners, as attempting to replace components will not resolve the underlying software glitch and could lead to unnecessary costs.

Repair Procedure Summary

If you experience the "HVAC blower setting adjustment not possible" issue, the recommended solution is to perform a restart of the MMI (Multi Media Interface) system. This simple procedure will typically restore the fan control to the screen.

To restart the MMI system:

1. Press and hold the On/Off button for at least 10 seconds.
2. The MMI system will restart, which usually takes less than a minute.

This process is also described in your Audi owner's manual under the section "Restarting the MMI," as shown in Figure 3 of the TSB. Performing this restart should resolve the intermittent problem with the Audi HVAC blower setting.

Owner Action

If your 2021-2022 Audi exhibits the symptom where the HVAC fan control strip is missing or the fan speed cannot be adjusted, you can perform the MMI system restart yourself. There is no need to visit a dealership for this specific issue unless the MMI restart does not resolve the problem. This TSB is informational only and does not apply to any Audi Warranty for repair costs, as it is a self-service resolution for an intermittent software display issue.