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

Audi has initiated Service Action 27K2 to address a software-related concern affecting the 12V battery control module in certain 2022 Audi e-tron GT vehicles. This proactive measure aims to prevent potential issues with the vehicle's 12V battery system.

The service action involves a software update designed to resolve the underlying problem. Owners of affected vehicles will be notified by Audi, and the necessary repair will be performed by authorized dealerships free of charge under specific conditions.

Symptoms

Owners of affected 2022 Audi e-tron GT vehicles may experience a complete discharge of the 12V battery. This condition is attributed to a software issue within the 12V battery control module, which can lead to unexpected power loss in isolated cases.

What's Being Addressed

This service action, identified as 27K2, focuses on updating the software for the 12V battery control module. The update is intended to correct the software anomaly that can cause the 12V battery to discharge completely. The update ensures the proper functioning of the battery management system, preventing future occurrences of this issue for the Audi e-tron GT 12V battery software.

Important Warnings for Owners

Audi has provided several critical advisories regarding Service Action 27K2:

• "Dealers must ensure that every affected inventory vehicle has this campaign completed before delivery to consumers."
• "This service action will be available for you free of charge only until March 01, 2028. If a customer wishes to have this service performed after the expiration date, your dealerships normal costs associated with this repair will apply."
• "DO NOT USE Guided Fault Finding (GFF) to perform this flash. Using GFF will cause the flash to take longer. Requests for additional time will not be considered."
• "The VAS Diagnostics Interface MUST ONLY be connected to the tester with a USB cable." Using Bluetooth or WiFi for the update increases the risk of connection loss and potential damage to the control module, and may lead to denial of additional time or parts requests.
• "Radiator Fan(s) may cycle ON high speed during the Update Process! There is a serious risk that personal injury may result if contact is made with spinning fan blades. Keep hands and all objects away from Radiator Fan(s) during Update Process!"
• "Damages resulting from improper repair or failure to follow these work instructions are the dealer's responsibility and are not eligible for reimbursement under this action."
• "Diagnosis and repair of pre-existing conditions in the vehicle are not covered under this action."
• "If the software update is performed with an insufficient charging voltage, damage to one or more control units may occur."
• "All Safety Recalls must be completed prior to completing this campaign."

Repair Procedure Summary

The repair for Service Action 27K2 involves a software update to the 12V battery control module. The process, performed by an authorized Audi technician, includes several key steps:

1. Vehicle Eligibility Check: Technicians must verify the vehicle's eligibility for the campaign using the Campaigns/Actions screen in Elsa, ensuring the status is