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.
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Only bulletins with component: Turbocharger or supercharger are shown. Show all
| Edition114 | 2023-02-06. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:TURBO/SUPERCHARGER. Wastegate linkage dissconnected |
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| 131320312454 | 2022-08-01. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:TURBO/SUPERCHARGER. Under certain driving conditions, the linkage for the waste gate actuation can encounter excessive wear which leads to play at the waste gate flap. This leads to boost escaping through a loose flap, which sets DTC P0299 (Negative Pressure Deviation). |
| 131220312453 | 2022-08-01. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:TURBO/SUPERCHARGER. Under certain driving conditions, the linkage for the waste gate actuation can encounter excessive wear which leads to play at the waste gate flap. This leads to boost escaping through a loose flap, which sets DTC P0299 (Negative Pressure Deviation). |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.