Service bulletins for the 2009 Audi S4
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.
226 on file from NHTSA, as of 2026-10-19.
By type
By component
By trouble code
Only bulletins with component: Headlights are shown. Show all
| A9423672071954_1 | 2023-11-06. Service bulletin. EXTERIOR LIGHTING:TAIL LIGHTS; EXTERIOR LIGHTING:HEADLIGHTS. This bulletin provides information pertaining to when there are foreign objects inside of a headlight or taillight. |
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| A941312 2017566- | 2017-11-17. Service bulletin. EXTERIOR LIGHTING:HEADLIGHTS:SWITCH; EXTERIOR LIGHTING:HEADLIGHTS. Supersedes Technical Service Bulletin Group 94 number 09-23 dated August 12, 2009. Headlight switch knob is pressed in. The switch functions correctly. The headlight switch knob was designed with a normal position and a pushed-in position. This is a deliberate design feature designed to avoid injuries in the event of a collision. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.