2024 Audi e-tron GT High Voltage Battery Ignitor Hotfix

Audi has released Service Information AOS-24-86 to address a specific diagnostic issue affecting the 2024 Audi e-tron GT. This bulletin details a hotfix for the Offboard Diagnostic Information System Service (ODIS Service) that prevents an erroneous warning message from appearing during a particular test plan. This Audi e-tron GT ignitor warning is a software-related issue within the diagnostic tool itself, not a fault with the vehicle's hardware.

Symptoms

Technicians using the ODIS Service diagnostic tool may encounter an incorrect warning message during the "High Voltage Battery Ignitor test plan." The verbatim message displayed is: "HIGH VOLTAGE BATTERY IGNITER AN IDENTIFICATION MESSAGE APPEARED AND STATED THAT THE VEHICLE IS BEING IDENTIFIED. VEHICLE ETRON GT HAS NO HIGH VOLTAGE BATTERY. OPEN AN TICKET ODIS SUPPORT REQUEST" on the 2022 RS eTron GT. This Audi e-tron GT ignitor warning is misleading because the e-tron GT does not possess a high voltage battery ignitor.

Diagnosis / Trigger Conditions

The issue is triggered specifically when the ODIS Service software performs the "High Voltage Battery Ignitor test plan." This test plan, part of the diagnostic routine, incorrectly identifies a component that is not present in the Audi e-tron GT. The appearance of this false warning indicates that the diagnostic system's software requires an update.

Important Warnings

It is crucial for technicians to understand the context of this diagnostic message. The bulletin explicitly states: "VEHICLE ETRON GT HAS NO HIGH VOLTAGE BATTERY." This means the warning is a false positive and does not indicate a fault with the vehicle's high voltage system. Technicians should not attempt to diagnose or repair a non-existent component based on this erroneous message. Instead, they are instructed to "OPEN AN TICKET ODIS SUPPORT REQUEST" if they encounter persistent issues or require further assistance with the ODIS system.

Repair Procedure Summary

The resolution for this Audi e-tron GT ignitor warning involves updating the ODIS Service diagnostic software. This is a software hotfix designed to correct the diagnostic tool's behavior, preventing the incorrect warning message from appearing. The update ensures that diagnostic procedures accurately reflect the vehicle's actual components and systems, streamlining the diagnostic process for technicians.

Required Tools or Parts

To implement this hotfix, the diagnostic tester must be running specific software versions. Technicians need to ensure their ODIS system is updated to:

• Base Application 24.3.1
• Audi Brand version 2.36.5

These software updates for the ODIS Service tool are essential to correctly identify vehicle components and avoid the misleading "High Voltage Battery Ignitor" warning during diagnostic tests, as outlined in Service Information AOS-24-86.

Owner Action

This hotfix primarily concerns the diagnostic tools used by Audi dealerships and service centers. As an owner of a 2024 Audi e-tron GT, you do not need to take direct action. However, if your vehicle requires diagnostic service and you are concerned about potential misdiagnosis related to battery systems, you may mention Audi Service Information AOS-24-86 to your service advisor to ensure their diagnostic equipment is up-to-date. This ensures that any diagnostic work performed on your vehicle is based on accurate information from the ODIS system.

Source: NHTSA ID: 11013701