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Service bulletins for the 2016 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.

521 on file from NHTSA, as of 2026-10-19.

By type

By component

By trouble code

By topic

Bulletins, newest first
TSB_2041717_142025-10-03. Service bulletin. VISIBILITY/WIPER. This bujlletin provides information regarding the GFF test plan required for A/C compressor replacements regardless of the concern.
TSB_2079118_12025-09-04. Service bulletin. UNKNOWN OR OTHER. This bulletin provides tips for improving the robustness of the Bluetooth and CarPlay connection.
TSB_2073747_32025-09-04. Service bulletin. STRUCTURE:BODY. This bulletin provides information for when there are scratches or a coating on the cover of the instrument cluster, or there are particles or insects inside of the housing.
TSB_2042920_32025-09-04. Service bulletin. STRUCTURE:BODY. This bulletin provides information when there is corrosion on the tailpipes.
TSB_2061976_42025-09-04. Service bulletin. ELECTRICAL SYSTEM. This bulletin provides information for wire harness repairs and documentation.
TSB_2074436_22025-09-04. Service bulletin. UNKNOWN OR OTHER. This bulletin provides information when the horn sound quality is poor.
TSB_2070568_52025-09-04. Service bulletin. UNKNOWN OR OTHER. This bulletin provides information about professional noise analysis with the VAS 611 015 PICO-NVH tool
TSB_2060750_42025-09-04. Service bulletin. UNKNOWN OR OTHER. This bulleitn provides information regarding UV Leak additive for finding oil leaks.
AOS-25-472025-09-04. Service bulletin. UNKNOWN OR OTHER. This is a notice for software changes with the ODIS diagnostic program to correct the communication during vehicle programming function: The hotfix is to correct the issue: Issue seen: ODS5003E Infrastructure Guided Fault Finding: An internal fatal error occurred during the G929 - Vehicle Interior Carbon Dioxide Concentration Sensor function test plan. NOTE: This ODS error could show up on any other GFF function test plans as well.
TSB_2078728_12025-08-05. Service bulletin. UNKNOWN OR OTHER. This bulletin provides information when a customer reports that poor voice quality via bluetooth with iOS 18.0.x - 18.4.x.
TSB_2070568_42025-08-05. Service bulletin. UNKNOWN OR OTHER. This bulletin provides information about professional noise analysis with the VAS 611 015 PICO-NVH tool
TSB_2027368_72025-08-05. Service bulletin. ELECTRICAL SYSTEM. This TSB provides information when the Audi advanced key is inoperative; door handle touch sensors.
TSB_2010353_62025-08-05. Service bulletin. ELECTRICAL SYSTEM. This TSB provides informatin when the cigarette lighter element does not eject, or the cigarette lighter is inoperable.
TSB_2042920_22025-07-08. Service bulletin. FUEL/PROPULSION SYSTEM. This bulletin provides information when there is corrosion on the exhaust tail pipes.
TSB_2059891_92025-06-03. Service bulletin. ELECTRICAL SYSTEM. This bulletin provides information when the restricted function icon for Audi pre sense is displayed after engine starts.
TSB_2056019_42025-06-03. Service bulletin. ELECTRICAL SYSTEM. This bulletin provides information when the anti-theft alarm activates for no reason, or when the anti-theft alarm does not activate.
TSB_2077320_22025-05-03. Service bulletin. UNKNOWN OR OTHER. This TSB is a label placement guide as required by CARB for remanufactured parts.
TSB_2031473_62025-05-03. Service bulletin. STRUCTURE:BODY. This service information TSB describes a cosmetic issue after using a car wash.
TSB_2012749_182025-05-03. Service bulletin. ELECTRICAL SYSTEM. This bulletin provides information when the exterior lights have moisture accumulation.
TSB_2071893_22025-05-03. Service bulletin. SEATS. This TSB provides damage assessment guidelines for textile seat covers.
TSB_2077320_12025-04-04. Service bulletin. UNKNOWN OR OTHER. This TSB is a label placement guide as required by CARB for remanufactured parts.
TSB_2075530_22025-04-04. Service bulletin. ENGINE. This bulletin provides informatin when the engine does not run smoothly at idling speeds.
TSB_2071185_22025-04-04. Service bulletin. UNKNOWN OR OTHER. This bulletin provides information regarding various comlaints related to Apple CarPlay with Apple iOS devices.
TSB_2041717_132025-04-04. Service bulletin. VISIBILITY/WIPER. This bulletin provides information regarding the GFF test plan required for A/C compressr replaements regardless of the concern.
TSB_2018194_122025-04-04. Service bulletin. SUSPENSION. This bulletin serves as an assessment aid for shock absorber leaks.

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.