2021-2024 Audi Q5/SQ5 Airbag Light DTC B101704

Audi has released Manufacturer Communication TSB 2073566 to address instances of an illuminated airbag warning light in certain 2021-2024 Audi Q5, SQ5, Q5 Sportback, and SQ5 Sportback vehicles. This technical service bulletin provides specific guidance for technicians diagnosing issues related to Diagnostic Trouble Codes (DTCs) B101704 and B103604. If you are experiencing an "Airbag light on" warning, especially with an Audi Q5 airbag light B101704, this document outlines the required diagnostic approach.

Symptoms

Owners may notice the "Airbag light on" or "Airbag warning lamp on" illuminated on their instrument cluster. This warning indicates a potential issue with the vehicle's supplemental restraint system, which includes the airbags. It is a critical safety indicator that requires prompt attention from a qualified technician.

Fault Codes / DTCs

Technicians diagnosing this concern will typically find one or both of the following Diagnostic Trouble Codes stored in the airbag control module. The affected module is identified as J234, with the internal designation da0015. The specific DTCs are:

• B101704: Airbag control module fault.
• B103604: Airbag control module fault.

These codes specifically point to a fault within the airbag system that requires careful investigation and adherence to the manufacturer's specific diagnostic procedure.

Diagnosis / Trigger Conditions

When an Audi Q5 airbag light B101704 or B103604 appears, it signals a specific condition within the airbag system that needs specialized attention. The presence of these DTCs in the J234 (da0015) airbag control module triggers a unique diagnostic workflow outlined by Audi. It's crucial for technicians to follow these steps precisely to ensure an accurate resolution.

Important Warnings for Technicians

Audi's TSB 2073566 includes critical instructions for technicians to ensure proper diagnosis and prevent the loss of vital diagnostic data. These warnings are crucial for accurately resolving the Audi Q5 airbag light B101704 issue and related concerns:

• Do NOT perform GFF or test plans for these DTCs. Technicians are explicitly instructed not to run guided fault finding or standard test plans when these specific DTCs are present. This is to avoid misdiagnosis or unintended actions that could complicate the repair process.
• Do NOT erase the fault memory. Clearing the fault codes prematurely can remove valuable diagnostic information needed for the Technical Assistance Center (TAC) to properly review the case. The fault memory provides a crucial snapshot of the system's state when the error occurred.
• Exit ODIS without erasing the fault memory. When using the ODIS diagnostic system, technicians must ensure they exit the program in a manner that preserves the fault memory. This can be achieved by clicking the stop button located in the "Data" drop-down menu on the right column, rather than using an option that clears codes.

Repair Procedure Summary

For vehicles exhibiting an "Airbag light on" accompanied by DTCs B101704 or B103604, the repair process involves a specific set of documentation and communication steps with Audi's Technical Assistance Center (TAC). This procedure is detailed in TSB 2073566.

1. Questionnaire Completion: Technicians must first fill out a specialized questionnaire. This document, titled "69 Repair Authorization - Airbag warning lamp on, DTCs B101704, B103604," is attached to TSB 2073566 and can be found in the Elsa diagnostic system.
2. Diagnostic Log Collection: A diagnostic log from the ODIS system must be generated. It is imperative that this log is created without erasing the fault memory, as previously warned.
3. TAC Web Ticket Creation: A web ticket must be created with the Technical Assistance Center.
4. Documentation Submission: Both the completed questionnaire and the diagnostic log must be attached to the TAC web ticket for review by Audi specialists.

It is important to note that the information requested in these worksheets updates frequently. Technicians should always use the latest version available on Elsa2Go and include all requested information upfront when submitting the WEB ticket to TAC.

Owner Action

If your 2021-2024 Audi Q5, SQ5, Q5 Sportback, or SQ5 Sportback displays an "Airbag light on" warning, especially if you suspect an Audi Q5 airbag light B101704 or B103604, it is recommended to contact your authorized Audi dealer. The dealer's technicians will follow the specific diagnostic and repair authorization procedure outlined in Audi Manufacturer Communication TSB 2073566 to address the issue. Do not attempt to clear the fault codes yourself, as this could hinder proper diagnosis.

NHTSA ID: 11002204