Service-Bulletin

2022 Audi e-tron GT 12V Battery Control Module Software Update

Audi has released a revision to Service Action 27K2 for the 2022 Audi e-tron GT, updating the 12V Battery Control Module software. This revision provides critical information regarding required voltage during the software update procedure.

ByAhmet Topcu — Founder & Editor-in-ChiefAutomated summary2022 Audi e-tron GT
2022 Audi e-tron GT — manufacturer_communication document image 1
Source: NHTSA manufacturer_communication 10232109
Service Action 27K212V Battery Control Module Software27K2_REV202302222022 Audi e-tron GT 12V battery softwareAudi e-tron GT battery software updateAudi 27K2 revisionAudi 12V battery control moduleAudi e-tron GT required voltage updateELSAServiceNet

Audi has issued an important revision to Service Action 27K2, specifically addressing the 12V Battery Control Module software for the 2022 Audi e-tron GT. This update, dated February 22, 2023, serves as a crucial notification for Audi dealerships, ensuring they possess the most current and accurate instructions when performing software updates related to the vehicle's 12V battery system. The focus of this revision is to provide additional clarity and detail to technicians.

Understanding Service Action 27K2

Service Action 27K2 is an ongoing campaign initiated by Audi to update the software within the 12V Battery Control Module. This module plays a vital role in managing the vehicle's conventional 12-volt electrical system, which powers essential components like lighting, infotainment, and various control units. Ensuring this software is up-to-date is critical for the optimal performance and reliability of these systems in your 2022 Audi e-tron GT.

Key Revision Details: Required Voltage Information

The most significant aspect of this February 22, 2023 revision is the inclusion of specific information regarding the "required voltage" during the 12V Battery Control Module software update procedure. Maintaining a stable and adequate voltage supply is paramount when flashing or reprogramming vehicle control modules. Insufficient voltage during such an operation can lead to incomplete software installation, module corruption, or even permanent damage to the control unit, necessitating costly replacement. Audi's addition of this detail in the revised 27K2 Service Action work instructions underscores its importance for a successful and trouble-free update.

Why This Revision Matters for Your 2022 Audi e-tron GT

For owners of a 2022 Audi e-tron GT, this revision means that when their vehicle undergoes service that includes a 12V Battery Control Module software update, technicians will be working with the most precise instructions. This minimizes the risk of complications during the update process and helps ensure the longevity and proper functioning of the battery control system. While this specific document is a dealer communication, its ultimate goal is to enhance the quality of service provided to customers and maintain the performance of the 2022 Audi e-tron GT 12V battery software.

What Owners Should Know

It's important to understand that this document is a revision notice for internal dealership use, not a direct recall or owner notification. Therefore, owners of affected vehicles, such as the 2022 Audi e-tron GT, will not typically receive a letter specifically about this revision. However, it ensures that when your vehicle is brought in for any service that might involve software updates to the 12V Battery Control Module, the dealership will follow the most current and robust procedures. If you have concerns about your 2022 Audi e-tron GT 12V battery software, you can always discuss Service Action 27K2 with your authorized Audi service center.

Important Dealer Instructions

Audi explicitly instructs dealerships to discard any previously printed paper copies of the 27K2 Service Action circular and replace them with the most current version. This directive highlights the critical nature of the updated voltage information and the need for all technicians to adhere to the latest guidelines. The complete, revised Service Action work instructions are available to Audi service personnel via ELSA and ServiceNet.


Source: NHTSA ID 10232109

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What Audi e-tron GT owners report

Counted from the records in our database across 3 model years.

22
Owner complaints
15
Recalls
1,127
Service bulletins
1
Crashes reported
2
Fires reported
0
Injuries reported

The 2022 model year

8 complaints, the 2nd most of 3 model years on file. Owners reported 0 crashes, 0 fires and 0 injuries for this year, which also has 13 recalls on file.

Electrical System, the system this article covers, accounts for 14 of 22 complaints (64%), including 3 for 2022.

Complaints by model year

Model years with the most complaints for the Audi e-tron GT
20228
202313
20241

Most-reported systems

  1. Electrical System — 14
  2. Fuel/Propulsion System — 7
  3. Engine — 5
  4. Power Train — 3
  5. Service Brakes — 1

Latest recalls for the 2022 model year

  • 25V900000 — Back Over Prevention (Dec 2025)
  • 25V227000 — Air Bags (Apr 2025)
  • 24V726000 — Electrical System (Sep 2024)
All 2022 recalls →

Recent owner reports about electrical system

Purchased a used 2022 Audi E-Tron GT with an open NHTSA safety recall for high-voltage battery fire risk (Recall 24V726 / Audi 931A). The recall remedy had not been performed at time of purchase.

2022 Audi e-tron GT owner, Apr 2026

The contact owns a 2022 Audi E-Tron GT. The contact received notification of NHTSA Campaign Number: 24V726000 (Electrical System); however, the part to do the recall repair was not yet available. The local dealer was contacted.

2022 Audi e-tron GT owner, Apr 2025
Read owner complaints →

Complaints are owner reports filed with NHTSA. They are unverified, and counts depend on how many vehicles were sold, so they are not a failure rate.

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