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

Audi has initiated Service Action 27K2 to address a software issue affecting the 12V Battery Control Module in certain 2022 Audi e-tron GT vehicles. This proactive measure aims to prevent unexpected battery discharge and ensure the reliable operation of your vehicle's electrical system.

The 2022 Audi e-tron GT 12V battery software update is crucial for maintaining proper battery function. This service action, released on February 22, 2023, includes updated work instructions regarding required voltage during the repair process.

Symptoms

Owners of affected 2022 Audi e-tron GT vehicles may experience instances where the 12V battery discharges completely. This occurs in isolated cases and is directly linked to a software anomaly within the 12V Battery Control Module.

What's Being Addressed

The core of the problem lies in the software of the 12V Battery Control Module. This software issue can lead to the complete discharge of the 12V battery, potentially causing inconvenience and unexpected power loss. Service Action 27K2 provides a corrective action by updating this software to prevent future occurrences.

Important Warnings for Owners

Owners should be aware of several critical points regarding this service action:

• Free of Charge Service: This service action will be available free of charge until March 01, 2028. If you choose to have this service performed after this date, your dealership's normal costs will apply.
• Pre-Delivery Requirement: Dealers are required to ensure that every affected inventory vehicle has this campaign completed before delivery to consumers.
• Safety Precaution: During the update process, the radiator fan(s) may cycle on at high speed. There is a serious risk of personal injury if contact is made with spinning fan blades. Keep hands and all objects away from the radiator fan(s) during the update.
• Prior Service Actions: All safety recalls must be completed prior to completing this campaign. Additionally, Service Action 93P9 must be performed before this software update.

Repair Procedure Summary

The repair involves updating the 12V Battery Control Module software. Technicians will first verify the vehicle's eligibility using the Campaigns/Actions screen in Elsa. If multiple software update campaigns are open, they must be performed in order of their start date, with the oldest first.

Before initiating the software update, technicians must ensure the ODIS software is up to date and the battery charger is properly connected and maintaining a voltage above 12.5 volts. The screen saver and power saving settings on the diagnostic tester must be disabled to prevent interruptions. The VAS Diagnostic Tester must be plugged in using supplied power adapters and connected via a USB cable. Flashing should be performed through