Service bulletins for the 2013 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.
662 on file from NHTSA, as of 2026-10-19.
By type
By component
By trouble code
By topic
Only bulletins with component: Engine are shown. Show all
| Circular19N8REV1 | 2020-03-06. Service bulletin. ENGINE; FUEL SYSTEM, OTHER:DELIVERY:FUEL PUMP. SERV_ACT - After-Run Coolant Pump - Updated claiming and work instructions: A single part number per criteria will now be used. |
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| AWA 19-06 | 2020-01-08. Service bulletin. ENGINE; EQUIPMENT. The communication contains the details of the water pump extended warranty. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.