2021-2024 Audi Airbag Warning Lamp On DTCs B101704 B103604

Symptoms of an Airbag System Fault

Owners of various 2021-2024 Audi models, including the Audi e-tron, may notice the "airbag warning light is on" in their instrument cluster. This illuminated warning light signals a detected fault within the vehicle's airbag system, which is crucial for occupant safety. When this light appears, it indicates that the system may not function as intended in the event of a collision.

Diagnostic Trouble Codes (DTCs)

When the airbag warning light is active, a workshop diagnosis may reveal specific Diagnostic Trouble Codes (DTCs) stored in the airbag control module, identified as J234 (address word 0015). These codes pinpoint the nature of the detected fault:

These DTCs suggest that the crash sensors responsible for detecting impacts and deploying the airbags may be experiencing a malfunction.

Technical Background: Why Audi is Investigating

Audi has issued TSB 69 24 08 2073566/1 because technicians have reported replacing various parts under warranty for the airbag warning light condition, yet the underlying issue remained unresolved. To better understand and address these persistent faults, Audi is actively collecting information related to DTCs B101704 and B103604 in the listed vehicles. This TSB serves as a directive for technicians to gather specific diagnostic data rather than providing a direct repair solution at this stage.

Important Service Instructions for Technicians

This Technical Service Bulletin outlines a specific protocol for Audi technicians when encountering an Audi e-tron airbag warning light with the associated DTCs. The primary goal is data collection to help Audi engineers identify the root cause of the issue.

Technicians are instructed to:

• Verify the presence of DTCs B101704 and/or B103604 in the airbag control module.
• Do NOT perform Guided Fault Finding (GFF) or test plans for these specific DTCs.
• Do NOT erase the fault memory from the airbag control module.
• Take precautions to prevent the ODIS diagnostic system from erasing the fault memory when exiting the application.
• Complete a specific questionnaire and collect relevant customer information regarding the fault.
• If the vehicle is still within its New Vehicle Limited Warranty period, the technician must contact an Audi Technical Assistance Center (TAC) consultant before proceeding further. All collected DTCs, the diagnostic log, and the completed questionnaire must be attached to the TAC ticket or Web Ticket.

What Owners Should Know

This TSB, identified as 69 24 08 2073566/1, is currently informational and focuses on data gathering by Audi. It is important to note that this TSB is not applicable to any Audi Warranty for direct repair. If your Audi, including an Audi e-tron, displays an "airbag warning light is on" message or you suspect an airbag system fault, it is crucial to have your vehicle inspected by an authorized Audi service center. They will follow the manufacturer's guidelines to diagnose the issue and contribute to Audi's ongoing investigation into these specific DTCs.

NHTSA ID: 10253265