Service bulletins for the 2021 Audi A4
A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.
1057 on file from NHTSA, as of 2026-10-19.
About B129B on the 2021 Audi A4: what the code means, and the bulletins and recalls about the same components.
By type
By component
By trouble code
Only bulletins with trouble code: B129B are shown. Show all
| A9122322061625_4 | 2022-10-05. Service bulletin. EQUIPMENT:ELECTRICAL. The message "SOS Malfunction - Emergency call malfunction, please contact service" may appear erroneously in the presence of DTCs B129B11 and/or DTC B239C11. No repairs are necessary at this time. |
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| A9121472061625_3 | 2021-12-07. Service bulletin. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL. This bulletin states to create a PSS record when the message "SOS - Emergency call malfunction, please contact service" is displayed in the instrument cluster and DTCs B129B11 and B239C11 are stored in the control module for emergency call module and communication unit. |
| A9121672061625_2 | 2021-03-04. Service bulletin. ELECTRICAL SYSTEM. This bulletin states to create a PSS record when the message "SOS - Emergency call malfunction, please contact service" is displayed in the instrument cluster and DTCs B129B11 and B239C11 are stored in the control module for emergency call module and communication unit. |
| A9120432061625_1 | 2021-01-08. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT:ELECTRICAL. SOS emergency call malfunction, DTC B129B11 and B129C11 are stored in the emergency call control module |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.