Audi Q5/SQ5 Airbag Warning Light: DTCs B100A1B, B100B1B

Symptoms

Owners of 2021-2023 Audi Q5 and SQ5 vehicles may observe an "airbag warning light is on" message illuminated on their instrument cluster. This warning indicates a detected malfunction within the vehicle's supplemental restraint system (SRS), commonly known as the airbag system.

Fault Codes / DTCs

When the "airbag warning light is on" message appears, diagnostic scans may reveal specific fault codes. The manufacturer communication, NHTSA ID 10247497, specifically mentions the following diagnostic trouble codes:

• B100A1B
• B100B1B

These codes point to specific issues within the airbag system that require attention.

Diagnosis

This bulletin provides information to Audi technicians regarding the diagnosis of the airbag system when the "airbag warning light is on" and DTCs B100A1B or B100B1B are present. While the specific diagnostic steps are not detailed in the public summary, the communication ensures that dealerships have the necessary guidance to properly identify the root cause of the Audi Q5 airbag warning light.

Repair Procedure Summary

The manufacturer communication (NHTSA ID 10247497) is intended to inform dealers about how to address the airbag warning light issue. The bulletin contains information to guide technicians through the necessary repair procedures to resolve the condition and clear the associated DTCs. Owners experiencing an Audi Q5 airbag warning light should be aware that their dealership has access to this technical guidance.

Owner Action

If your 2021-2023 Audi Q5 or SQ5 displays an "airbag warning light is on" message or you have confirmed the presence of DTCs B100A1B or B100B1B, it is crucial to have your vehicle inspected by an authorized Audi dealer. The airbag system is a critical safety component, and any malfunction should be addressed promptly. The dealership will use the information provided in manufacturer communication NHTSA ID 10247497 to diagnose and perform the appropriate repairs.

Source: NHTSA ID 10247497