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Service bulletins for the 2018 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.

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

By type

By component

By trouble code

By topic

Bulletins, newest first
TSB_2083409_12026-10-05. Service bulletin. UNKNOWN OR OTHER. This bulletin states that technicians are required to report to the manufacturer when a vehicle has flooded, and specify the height to which the vehicle has been flooded.
TSB_2081030_42026-10-05. Service bulletin. ENGINE. This bulletin provides information when there is an abnormal knocking noise from the engine compartment; V6 3.0L TFSI.
TSB_2079214_42026-10-05. Service bulletin. ELECTRICAL SYSTEM. This bulletin provides information regarding fault finding and repair information for electric tailgate.
TSB_2078648_42026-10-05. Service bulletin. STRUCTURE:BODY. This bulletin provides information about billing for a broken sunroof glass panel.
TSB_2068999_52026-10-05. Service bulletin. STRUCTURE:BODY. This TSB describes a corrosion issue due to outside influence and the prohibition of warranty in these cases.
TSB_2052680_22026-10-05. Service bulletin. UNKNOWN OR OTHER. This bulletin provides information for reporting safety related information to the manufacturer.
TSB_2051095_122026-10-05. Service bulletin. UNKNOWN OR OTHER. This bulletin provides infomraiton abou the Audi frequency analysis application, which is available in the App Store for Android and Apple phones.
TSB_2030471_92026-10-05. Service bulletin. UNKNOWN OR OTHER. This bulletin provides information when the license plate mounting bracket threded inserts are stripped.
TSB_2020552_152026-10-05. Service bulletin. VISIBILITY/WIPER. This bulletin provides service information regarding exterior glass cleaning.
TSB_2082977_12026-09-04. Service bulletin. ELECTRICAL SYSTEM. This bulletin provides informaiton when the airbag warning lamp is active, event memory "B200000 - Faulty control module, symptom 305".
TSB_2081030_32026-09-04. Service bulletin. ENGINE. This bulletin provides information when there is an abnormal engine knocking noise from the engine compartment; V6 3.0L TFSI.
TSB_2079732_22026-09-04. Service bulletin. UNKNOWN OR OTHER. This bulletin provides information when there is a paint issue on alloy wheels.
TSB_2078648_32026-09-04. Service bulletin. STRUCTURE:BODY. This service information TSB provides warranty coverage information for vehicles with a broken sunroof panel.
TSB_2076945_22026-09-04. Service bulletin. STRUCTURE:BODY. This bulletin provides information about leather care and seat repair.
TSB_2075120_32026-09-04. Service bulletin. SERVICE BRAKES. This bulletin provides information about the general approach for brake vibration concerns.
TSB_2074436_32026-09-04. Service bulletin. UNKNOWN OR OTHER. This bulletin provides information when the horn sound quality is poor.
TSB_20741717_152026-09-04. Service bulletin. VISIBILITY/WIPER. This bulletin provides information on the GFF test plan required for AC compressor replacements regardless of the concern.
TSB_2072304_42026-09-04. Service bulletin. SERVICE BRAKES. This bulletin provides information when there is an ABS/ESC speed sensor implausible signal.
TSB_2069904_32026-09-04. Service bulletin. SERVICE BRAKES. This bulletin provides information for all models regarding brake sounds.
TSB_2069078_42026-09-04. Service bulletin. SERVICE BRAKES. This bulletin provides information on the zirconium insercts in the brake piston (ceramic brakes only).
TSB_2068999_42026-09-04. Service bulletin. STRUCTURE:BODY. This TSB describes a corrosion issue due to outside influence and the prohibition of warranty in these cases.
TSB_2067132_42026-09-04. Service bulletin. SERVICE BRAKES. This bulletin provides information when there is corrosion on the friction survace of steel brake discs.
TSB_2063546_52026-09-04. Service bulletin. STEERING. This bulletin provides service infomraiton regardin gthe identifaction of noises with dynamic steering.
TSB_2063528_52026-09-04. Service bulletin. STEERING. This bulletin provides service information when thre are engine noises in the vehicle interior.
TSB_2059057_152026-09-04. Service bulletin. POWER TRAIN. This bulletin provides informatin when there is binding or vibrations in tight turns with quattro Ultra.

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