Service bulletins for the 2018 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.
772 on file from NHTSA, as of 2026-10-19.
By type
By component
By trouble code
By topic
| A462348203418124 | 2023-10-05. Service bulletin. SERVICE BRAKES. This bulletin provides information on brake noise analysis and handling. |
|---|---|
| A442303202256323 | 2023-10-05. Service bulletin. STEERING. This bulletin provides information for when a steering wheel shimmy, vibration, and/or oscillation is reported. |
| A3923552059129_4 | 2023-10-05. Service bulletin. POWER TRAIN. This bulletin provides information for when there are noises and/or vibrations in tight turns. |
| A2723602067906_3 | 2023-10-05. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM). This bulletin provides information for when DTC P0A7D00 is stored. |
| A0023732061669_2 | 2023-10-05. Service bulletin. EQUIPMENT:ELECTRICAL; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This bulletin provides information on workshop mode with Audi connect vehicles. |
| A0023712070568_1 | 2023-10-05. Service bulletin. ENGINE AND ENGINE COOLING. This bulletin provides information on professional noise analysis with the VAS 611 015 PICO NVH Tool. |
| A9123262071264_1 | 2023-09-01. 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. |
| A8723512064077_2 | 2023-09-01. Service bulletin. VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM. This TSB describes a method for leak detection for R134A and R1234yf refrigerant platforms only. |
| A7223492064695_3 | 2023-09-01. Service bulletin. STRUCTURE:BODY:DOOR:HANDLE:INTERIOR; STRUCTURE:BODY:DOOR:HANDLE:EXTERIOR. This bulletin provides information for an entry/exit assistance comfort concern. |
| A922336203815115 | 2023-08-04. Service bulletin. VISIBILITY:WINDSHIELD WIPER/WASHER. This bulletin provides information for when the washer solvent level warning is on. |
| A9023322059335_4 | 2023-08-04. Service bulletin. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL. This bulletin provides information for when there is noise from the area around the instrument cluster. |
| A8723452041717_9 | 2023-08-04. Service bulletin. VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM. This bulletin provides information on the GFF test plan required when replacing the A/C compressor. |
| A9023312058077_7 | 2023-08-04. 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_1 | 2023-08-04. Service bulletin. VISIBILITY. This bulletin provides information for when exterior glass cleaning is needed. |
| A6923922063398_3 | 2023-07-10. Service bulletin. SEAT BELTS. This bulletin provides information for when the seatbelt is hard to latch in the belt buckle. |
| A6923912056406_4 | 2023-07-10. Service bulletin. AIR BAGS. This bulletin provides information for when the airbag warning light is on and DTC B13BCF2 is stored in the airbag control module. |
| A4823502063528_4 | 2023-07-10. Service bulletin. STEERING. This bulletin provides information for when noises are heard inside the vehicle via the intermediate steering shaft. |
| A4823492061904_5 | 2023-07-10. Service bulletin. STEERING. This bulletin provides information for when the yellow steering malfunction light is on in the cluster and DTC C110DF0 is stored in the active steering module. |
| A4823432055733_4 | 2023-07-10. Service bulletin. STEERING. This bulletin provides information for when there are squeaking noises from the rubber boot of the intermediate steering shaft. |
| A102326201828810 | 2023-07-10. Service bulletin. ENGINE AND ENGINE COOLING. This bulletin provides information on checking for debris when replacing an engine. |
| A9123062010146_8 | 2023-07-10. Service bulletin. VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM. This bulletin provides information for when an unpleasant odor is coming from the heating and ventilation system. |
| A4623452070679_1 | 2023-07-10. Service bulletin. SERVICE BRAKES, AIR:ANTILOCK. This bulletin provides information for when one or more DC is stored in the ABS control unit related to the parking switch; DTC C100C07 and/or C100C29. |
| A4823412028220_1 | 2023-07-10. Service bulletin. STEERING: STEERING WHEEL/HANDLE BAR. This bulletin provides information for instances where the steering wheel leather is damaged. |
| A8723442010146_8 | 2023-07-10. Service bulletin. VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM. This bulletin provides information for when an unpleasant odor is coming from the heating and ventilation system. |
| A9423652061922_3 | 2023-07-10. Service bulletin. EXTERIOR LIGHTING. This bulletin provides detailed information on the proper documentation of optical concerns for headlights and taillights. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.