2025 Audi Q5 Airbag Module DTC B102204 Hotfix TSB

Symptoms

Owners of a 2025 Audi Q5 may not directly observe symptoms related to this issue. This Service Information, AOS-25-42, addresses a technical problem encountered by service technicians. Specifically, there is no Guided Fault Finding (GFF) test plan available within the diagnostic system for Diagnostic Trouble Code (DTC) B102204.

This missing test plan prevents technicians from properly diagnosing and addressing a "Passenger occupant detection system control module faulty DTC" stored in the 15 Airbag module. Without the correct test plan, accurate troubleshooting and repair of the 2025 Audi Q5 DTC B102204 cannot be performed.

Fault Codes / DTCs

The primary Diagnostic Trouble Code (DTC) addressed by this hotfix is:

• B102204: Passenger occupant detection system control module faulty DTC

This code is stored within the 15 Airbag module of affected vehicles. The hotfix ensures that the necessary diagnostic procedures for this specific 2025 Audi Q5 DTC B102204 become available to technicians.

Important Warnings for Technicians

Audi emphasizes critical steps for technicians when using this hotfix to prevent diagnostic system malfunctions:

• "We recommend installation of this hotfix on one diagnostic device ONLY. Hotfix must be removed immediately after performing the procedure."
• "The Hotfix must be removed after performing the procedure. Failure to do so will cause other vehicle diagnostics sessions to malfunction."

These warnings highlight the temporary nature of the hotfix and the importance of its proper management to maintain the integrity of diagnostic equipment.

Repair Procedure Summary

This hotfix, identified as A_2.38.7_J706_VW60_2507_1_20250725-071704, provides instructions for technicians to download, install, and then uninstall a temporary patch for the ODIS Service diagnostic system. The procedure ensures that the GFF test plan for DTC B102204 is available when needed.

1. Download the Hotfix: Technicians must access AccessAudi.com via a web browser on their diagnostic device. They navigate to "Elsa2Go > Service References > Software/Hardware Updates" and search for the "AOS-25-42 No test plan for DTC B102204 Hotfix Zip File." This file is then downloaded and saved to the Windows desktop. The hotfix file is typically named similar to "V2.47.7_OCC_002019" (example given in the document).
2. Install the Hotfix: The downloaded hotfix file is then copied and pasted to the desktop. Technicians open ODIS Service (running as Administrator), expand the "Data" submenu, and select "Download" under "Hotfix." They confirm the import of the workshop data patch and select the hotfix file from the desktop to install it.
3. Perform Diagnostic Procedure: Once the hotfix is successfully installed, technicians can proceed with the required diagnostic procedure for the 2025 Audi Q5 DTC B102204. This allows them to properly address the "Passenger occupant detection system control module faulty DTC."
4. Uninstall the Hotfix: Critically, after completing the diagnostic procedure, the hotfix must be uninstalled immediately. Technicians return to the ODIS Service "Hotfix" section, select "Erase," and confirm the deletion of the active workshop patch. This prevents potential malfunctions in future diagnostic sessions.

Required Tools or Parts

To apply this hotfix and address the 2025 Audi Q5 DTC B102204, technicians require:

• An ODIS diagnostic device.
• ODIS Service software, specifically Audi brand version 2.38.7.
• Access to AccessAudi.com for downloading the hotfix file.

Owner Action

If you own a 2025 Audi Q5 and have concerns about diagnostic trouble codes related to the airbag or passenger occupant detection system, it is recommended to contact an authorized Audi dealership. While this hotfix primarily addresses a technical diagnostic limitation for service centers, ensuring your vehicle's systems are properly diagnosed and repaired is crucial for safety. Your dealer will have the necessary tools and the latest service information, including Service Information AOS-25-42, to address any related issues.

---

Source: NHTSA Manufacturer Communication 11021429