2025 Audi A5, S5, Q5, SQ5 Rear Lid Not Opening TSB 2076902/2

Symptoms of the Rear Lid Issue

Owners of certain 2025 Audi models may experience a specific problem with their vehicle's rear lid. The primary symptom reported is that "The rear lid occasionally does not open when the button on the key is pressed." When this occurs, you might notice that the vehicle lights flash and the sound of the lock opening can be heard, but the rear lid itself remains closed.

It is important to note that this issue specifically affects the operation via the key button. Alternative methods for opening the rear lid, such as the button inside the driver's door or the handle on the outside of the rear lid, typically function correctly without any problems. This indicates a specific communication or timing issue related to the key fob input rather than a mechanical failure of the latch itself. If you are experiencing your Audi rear lid not opening, this TSB may apply to your vehicle.

Technical Background

The root cause of the "Rear lid does not open when button on key is pressed" symptom lies in the vehicle's start-up behavior. The system is designed to open the rear lid with two consecutive presses of the key button, where each press should last between 250 milliseconds and approximately 3 seconds.

However, under certain "unfavorable circumstances," the vehicle's start-up process may take longer than 250 milliseconds. When this happens, the first press of the key button might not be detected by the electrically operated rear lid system. This timing mismatch prevents the command from being registered correctly, leading to the rear lid not opening despite the user's input and the audible click of the lock. This technical bulletin, TSB 2076902/2, details this specific timing issue.

Important Owner Information

Audi advises owners about a temporary workaround and important operational detail regarding the rear lid. If you experience your Audi rear lid not opening, you should "advise the customer of the required time that should be allowed between the two presses of the button on the key when attempting to open the rear lid." This suggests that a slightly longer or more deliberate pause between the two presses might help in some cases before the software update is applied.

The Repair: Software Update

The solution for the "Rear lid does not open when button on key is pressed" issue is a software update. Audi has addressed this problem in production with software version 0231, which became standard from week 25 of 2025. For vehicles already on the road, technicians are instructed to perform a specific software update.

This update is detailed in TSB 2079690, which refers to "00 Combined software update 03.10.00/C (28.13.01) KD2." This update will recalibrate the system's response to the key button presses, ensuring that the first press is consistently detected even during longer vehicle start-up sequences. This will resolve the intermittent problem of the Audi rear lid not opening.

Warranty Information

For eligible vehicles, the repair outlined in TSB 2076902/2 is typically covered under warranty. The specific details for claiming this service are provided for dealerships:

• Service Number: 5789
• Damage Code: KD02
• Labor Operations:
  • 0151 0010: Software update, including connecting a battery charger. This operation refers to a Service Repair Time (SRT) with associated operations.
  • 0151 0040: Fixed rate for the software update, encompassing all necessary preliminary and follow-up work, such as bus sleep cycle management and calibration drives. This is allocated 130 Time Units (TU).
  • 0150 9999: For additional attempts if a flash abort occurs, an extra 50 TU can be claimed per documented attempt.

Warranty claims must adhere to the Audi Warranty Policies and Procedures Manual. It's also noted that when performing a combined software update, time stamps are not required for billing under warranty, allowing for more flexible workshop scheduling.

Next Steps for Owners

If you own a 2025 Audi A5, S5, Q5, or SQ5 and are experiencing the "Rear lid does not open when button on key is pressed" issue, it is recommended to contact your authorized Audi dealership. Inform them about the symptoms you are experiencing and mention Technical Service Bulletin 2076902/2. The dealership will be able to confirm if your vehicle is covered by this TSB and schedule the necessary software update. This update is crucial to ensure reliable operation of your Audi rear lid not opening with the key fob.

---

Source: NHTSA ID: 11027398