2022 Audi e-tron AX2 High Voltage Battery Test Plan Hotfix

What is Service Information AOS-25-06?

Audi has issued Service Information AOS-25-06, a technical bulletin providing instructions for a hotfix related to the Offboard Diagnostic Information System Service (ODIS Service). This document, dated January 22, 2025, is critical for technicians performing diagnostics on the high voltage battery system of certain Audi e-tron vehicles. It specifically targets an issue with a diagnostic test plan.

The Problem: Faulty Battery Test Plan

This hotfix addresses a specific concern identified as "AX2 - High Voltage Battery 1 Initiation test plan does not display the correct values or freezing up and crashing during the test". When technicians attempt to run this crucial diagnostic procedure on a 2022 Audi e-tron, the ODIS tester may fail to provide accurate data or may become unresponsive. This directly impacts the ability to properly assess and service the vehicle's high voltage battery system.

Such diagnostic failures can lead to delays in vehicle servicing, potential misdiagnosis of battery-related issues, and an inability to confirm the health or proper functioning of the high voltage battery. Ensuring the accuracy of the Audi e-tron AX2 battery test is vital for maintaining the performance and safety of these electric vehicles.

The Hotfix Solution

To resolve the issue with the "AX2 - High Voltage Battery 1 Initiation test plan," technicians are instructed to install a specific hotfix. The hotfix is identified as A_2.37.0_LeaktestHf1_20250120-104847. This patch must be applied to the ODIS tester before attempting to perform the diagnostic test plan again. This ensures the diagnostic tool operates correctly and provides reliable information.

It is crucial that the ODIS tester being used is running on Audi Brand version 2.37.0. Using an outdated or incorrect version of the diagnostic software could prevent the hotfix from installing correctly or from functioning as intended. This hotfix allows for an accurate Audi e-tron AX2 battery test.

Important Notes for Technicians

Audi notes that because this hotfix was rapidly developed and deployed, some text within the diagnostic test plan might still be in German. Technicians encountering German text are advised to use Google Translate as a guide to understand the directions. If problems persist after applying the hotfix and attempting translation, technicians should contact Audi for further assistance. This ensures that the Audi e-tron AX2 battery test can be completed effectively.

What 2022 Audi e-tron Owners Should Do

This Service Information bulletin is primarily for Audi dealerships and service centers. If you own a 2022 Audi e-tron and are experiencing any issues related to your high voltage battery, or if your vehicle is undergoing diagnostic testing for battery-related concerns, you can mention Service Information AOS-25-06 to your service advisor. This ensures that your dealer is aware of the necessary hotfix for the diagnostic equipment, preventing potential delays or inaccuracies in servicing your vehicle.

Source: NHTSA ID: 11013736