2025 Audi MMI Time Not Changing Daylight Saving TSB

Audi has released Technical Service Bulletin (TSB) 2079972/1 to address a software issue affecting the MMI system in certain 2025 models. This bulletin specifically targets a condition where the MMI system fails to automatically adjust the clock for daylight saving time, or revert from it, even when the automatic time adjustment feature is enabled. This TSB supersedes PSS TSB 2077132 and provides a definitive solution for the Audi MMI daylight saving time problem.

Symptoms

Owners of certain 2025 Audi A5, S5, Q5, and SQ5 vehicles may observe a specific issue with their Multi Media Interface (MMI) system: the clock does not automatically adjust itself when daylight saving time begins or ends. This means that despite having the automatic time adjustment feature enabled within the MMI settings, the vehicle's displayed time will remain incorrect. This discrepancy is not confined to the main MMI screen but affects all time displays throughout the vehicle's interior. While the system might eventually correct itself after the vehicle undergoes one or more 'bus sleep cycles'—periods when the vehicle's electronic systems power down—this delayed and inconsistent correction can be a significant inconvenience for drivers who rely on accurate timekeeping. The problem is also readily reproducible by service technicians in a workshop environment, confirming it as a consistent software anomaly rather than an intermittent glitch.

Technical Background

According to Audi, the root cause of the '91 MMI system: time does not automatically change to daylight saving time or back again' issue is a software fault within the MMI system. This prevents the automatic time adjustment function from operating correctly, leading to the discrepancy in displayed time. Audi has implemented a production solution, ensuring that vehicles manufactured in week 42/25 or later will no longer exhibit this particular software bug.

Repair Procedure Summary

To permanently resolve the Audi MMI daylight saving time issue, authorized Audi service centers will perform a software update on the affected vehicles. This critical update is detailed in a separate, comprehensive document, Technical Service Bulletin (TSB) 2079690, which outlines the precise steps for the '00 Combined software update 03.10.00/C (28.13.01) KD2'. Technicians are instructed to follow these directions meticulously. The update process typically involves connecting a specialized battery charger to the vehicle to ensure a stable power supply throughout the software installation, preventing potential interruptions or data corruption. The labor operations associated with this repair, identified by damage code KD02 and service number 9196, and labor codes 0151 0010 and 0151 0000, are covered under a fixed rate. This rate encompasses all necessary preliminary and follow-up tasks, including allowing for bus sleep cycles, performing calibration drives, and any additional work required if the software flashing process needs to be restarted due to an interruption.

Important Warnings

It is crucial for Audi owners to be aware of the warranty implications for this specific TSB 2079972/1. Audi states that if a vehicle falls outside of its active warranty period, this Technical Service Bulletin is considered 'informational only.' This designation typically means that while the bulletin provides a solution for a known issue, the cost of the repair—including parts and labor—may not be covered by Audi. Owners of out-of-warranty vehicles should therefore inquire about potential charges with their dealership before proceeding with the software update. This warning helps owners understand their financial responsibility and avoid unexpected service costs.

Owner Action

If you own a 2025 Audi A5, S5, Q5, or SQ5 and have observed your MMI system failing to automatically adjust for daylight saving time, the recommended course of action is to contact your authorized Audi dealership. When scheduling your service appointment, clearly describe the symptom and, if possible, reference Technical Service Bulletin 2079972/1 to help the service advisor quickly identify the correct repair. The dealership will perform the necessary software update, which is the definitive fix for the Audi MMI daylight saving time problem. While the system might temporarily self-correct after the vehicle's bus sleep cycles, a permanent and reliable solution requires this official software intervention.

NHTSA ID: 11026260