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Service bulletins for the 2019 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.

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

By type

By component

By trouble code

Bulletins, newest first
A0023742052680_42023-11-06. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This bulletin provides information on the additional reporting requirements for safety related inquiries.
AVin4Pin202309012023-10-05. Service bulletin. UNKNOWN OR OTHER; STRUCTURE:BODY:DOOR; ENGINE AND ENGINE COOLING:COOLING SYSTEM. Noise from front door trim panel while driving Low coolant warning in cluster, coolant level is correct Check engine lamp is on, DTC (s) P010600, P023600, P023700, P023800 Leak from oil pan USB Trim detached from center console 3.0L engine sound generator malfunctioning Valve cover leaking oil Fuel pressure low. DTC P008700 Check engine lamp, Belt Starter Generator DTC U046900 symptom 26950 "Check engine lamp on, DTC P042000: Catalyst System,Bank1 Efficiency Below"
A4623522054385_32023-10-05. Service bulletin. SERVICE BRAKES. This bulletin provides information for when the brakes creak at an almost standstill.
A4623512051095_82023-10-05. Service bulletin. SERVICE BRAKES. This bulletin provides information on brake pulsation diagnostic guidelines.
A4623502022584122023-10-05. Service bulletin. SERVICE BRAKES. This bulletin provides information on brake pulsation diagnostic guidelines.
A4623492067132_22023-10-05. Service bulletin. SERVICE BRAKES. This bulletin provides information on for when there is corrosion on the friction surface of a steel brake disc.
A4623482034181242023-10-05. Service bulletin. SERVICE BRAKES. This bulletin provides information on brake noise analysis and handling.
A4423032022563232023-10-05. Service bulletin. STEERING. This bulletin provides information for when a steering wheel shimmy, vibration, and/or oscillation is reported.
A3923552059129_42023-10-05. Service bulletin. POWER TRAIN. This bulletin provides information for when there are noises and/or vibrations in tight turns.
A2723602067906_32023-10-05. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM). This bulletin provides information for when DTC P0A7D00 is stored.
A2723592069747_42023-10-05. Service bulletin. EQUIPMENT:ELECTRICAL. This bulletin provides information for document requirements before replacing a 12v battery.
A0023732061669_22023-10-05. Service bulletin. EQUIPMENT:ELECTRICAL; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This bulletin provides information on workshop mode with Audi connect vehicles.
A0023712070568_12023-10-05. Service bulletin. ENGINE AND ENGINE COOLING. This bulletin provides information on professional noise analysis with the VAS 611 015 PICO NVH Tool.
AVin4PinAug232023-09-01. Service bulletin. STRUCTURE; ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM; POWER TRAIN; EQUIPMENT. 3.0L engine sound generator malfunctioning Belt noise from starter generator Check engine lamp - DTC P240200 stored in ECM Check engine lamp is on, DTC (s) P010600, P023600, P023700, P023800 "Check engine lamp on, DTC P042000: Catalyst System,Bank1 Efficiency Below" Check engine lamp, Belt Starter Generator DTC U046900 symptom 26950 Fuel pressure low. DTC P008700 Leak from oil pan Low coolant warning in cluster, coolant level is correct MMI screen exhibits "ghost touches" randomly changing screen Noise from front door trim panel while driving USB Trim detached from center console Valve cover leaking oil
A9123262071264_12023-09-01. Service bulletin. EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM); EQUIPMENT. This bulletin provides information for when the customer has concerns about the navigation route guidance.
A9123192056076_12023-09-01. Service bulletin. ELECTRICAL SYSTEM. This bulletin provides information for when there is no communication to the telematics control module, DTC U142100.
A8723512064077_22023-09-01. Service bulletin. VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM. This TSB describes a method for leak detection for R134A and R1234yf refrigerant platforms only.
A7223492064695_32023-09-01. Service bulletin. STRUCTURE:BODY:DOOR:HANDLE:INTERIOR; STRUCTURE:BODY:DOOR:HANDLE:EXTERIOR. This bulletin provides information for an entry/exit assistance comfort concern.
A5523792070966_12023-09-01. Service bulletin. STRUCTURE:BODY:TRUNK LID. This bulletin provides instructions for disabling and reengaging the gesture controlled rear lid (virtual pedal).
A9223362038151152023-08-04. Service bulletin. VISIBILITY:WINDSHIELD WIPER/WASHER. This bulletin provides information for when the washer solvent level warning is on.
A9123152070942_12023-08-04. Service bulletin. COMMUNICATION:MANUFACTURER TELEMATICS. This bulletin provides information for when there is no diagnostic communication to the telematics control module (ConBox) DTC U142100.
A9023322059335_42023-08-04. Service bulletin. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL. This bulletin provides information for when there is noise from the area around the instrument cluster.
A8723452041717_92023-08-04. Service bulletin. VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM. This bulletin provides information on the GFF test plan required when replacing the A/C compressor.
A9023312058077_72023-08-04. Service bulletin. SERVICE BRAKES; FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING. This bulletin provides information for when an unexpected Audi presense front intervention such as a front end warning, a warning jolt, partial braking, or emergency braking occurs and a warning appears in the instrument cluster and audibly.
A6423922020552_12023-08-04. Service bulletin. VISIBILITY. This bulletin provides information for when exterior glass cleaning is needed.

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