2025 Audi MMI Time Not Changing for Daylight Saving TSB

Revision History

This Technical Service Bulletin (TSB) 2079972/2 is the second revision of this document. The initial publication (Revision 1) was released on November 10, 2025. Revision 2 updated the warranty information, specifically correcting a labor operation detail.

Symptoms

Owners of affected 2025 Audi vehicles may observe that the time displayed in the MMI system does not automatically change to daylight saving time or back again. This occurs even when the automatic time adjustment feature has been set in the MMI. The incorrect time display is consistent across all vehicle displays. The behavior is eventually rectified after one or more bus sleep cycles, but the automatic adjustment function remains inoperative until a permanent fix is applied.

Diagnosis

Audi workshops can readily reproduce the complaint of the Audi MMI daylight saving time issue. The problem is observed across all displays within the vehicle's MMI system, confirming the customer's report that "The time in the MMI does not automatically change to daylight saving time or back, even when automatic time adjustment has been set in the MMI."

Technical Background

This issue, where the Audi MMI daylight saving time adjustment fails, is attributed to a software problem within the MMI system. It is not related to a mechanical or hardware failure, but rather a software anomaly preventing the correct automatic time transition.

Production Solution

Audi has implemented a production solution for this software issue. The complaint will no longer occur in vehicles manufactured in week 42/25 or later. This indicates that newer production models have the corrected software installed from the factory, resolving the "91 MMI system: time does not automatically change to daylight saving time or back again" concern.

Repair Procedure Summary

To resolve the Audi MMI daylight saving time issue, a software update is required. This Technical Service Bulletin (TSB) 2079972/2 replaces a previous Pending Service Solution (PSS) TSB 2077132, which also addressed the "91 MMI system: time does not automatically change to daylight saving time or back again" concern.

The software update procedure involves following the directions outlined in TSB 2079690, specifically referencing the "00 Combined software update 03.10.00/C (28.13.01) KD2." Technicians must ensure a battery charger is connected to the vehicle throughout the software update process to maintain stable voltage. The repair involves a fixed-rate software update, including all necessary preliminary and follow-up work. This includes allowing for bus sleep cycles, performing calibration drives, and restarting the software update if the flashing process is interrupted.

Warranty Information

For vehicles still under warranty, this repair is covered. The Claim Type specifies that if the vehicle is outside of any warranty, this Technical Service Bulletin is informational only. The Service Number for this operation is 9196, and the Damage Code is KD02. Labor operations include:

• 0151 0010: Software update, including connecting a battery charger. This operation should refer to the Service Repair Time (SRT) for associated operations.
• 0151 0040: Fixed rate for the software update, which covers all required preliminary and follow-up work. This includes accounting for bus sleep cycles, calibration drives, additional work, and restarting the software update if flashing is aborted. This operation is allotted 130 labor units (TU).

All warranty claims must adhere to the Audi Warranty Policies and Procedures Manual. Claims are subject to review or audit by Audi Warranty. The Claim Comment for this repair should be "As per TSB 2079972/2." When performing the combined software update, time stamps are not required for billing under warranty, allowing technicians to work on other vehicles simultaneously. The combined software update can also be performed by non-productive personnel.

Important Warnings and Owner Information

• No Automatic Notification: Audi is not notifying consumers directly about this specific Technical Service Bulletin. Owners should proactively check for this issue or inquire with their dealership if they experience the symptoms.
• Superseded Bulletin: This TSB 2079972/2 supersedes Pending Service Solution (PSS) TSB 2077132, titled "91 PSS MMI system: time does not automatically change to daylight saving time or back again." If you were previously aware of the PSS, this document provides the updated guidance.
• Future Changes: All part and service references provided in this TSB (2079972) are subject to change and/or removal. Always consult with your Parts Department and/or ETKA for the latest information and parts bulletins. Additionally, always check the Repair Manual for fasteners, bolts, nuts, and screws that require replacement during the repair.

Owner Action

If you own a 2025 Audi A5, Q5, S5, or SQ5 and are experiencing the Audi MMI daylight saving time issue, you should contact your authorized Audi dealership. Explain the symptom that "The time in the MMI does not automatically change to daylight saving time or back, even when automatic time adjustment has been set in the MMI." The dealership will be able to perform the necessary software update, as outlined in TSB 2079972/2, to correct this problem.

Source: NHTSA ID 11026261