WenmarOpen by Wenmar Pro

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

Only bulletins with component: Engine are shown. Show all

Bulletins, newest first
A0119162054893_12019-06-05. Service bulletin. ENGINE. This bulletin contains instructions for documenting the "Please reduce Oil Level" message in the instrument cluster potentially with an Engine Warmup request. This bulletin also applies to the S5 Sportback.
A151933 2053278-2019-04-15. Service bulletin. ENGINE; EQUIPMENT. This bulletin contains repair instructions for 3.0 and 2.9 TFSI engines that have oil loss around the engine compartment, front end, and underbody.
2018 Audi 2019012019-04-08. Service bulletin. ENGINE; EQUIPMENT. Oil Capacity Table: Changed Oil Specs for all models
A151933 2053278-2019-04-01. Service bulletin. ENGINE. This bulletin contains repair instructions for 3.0 and 2.9 TFSI engines that have oil loss around the engine compartment, front end, and underbody.
A011884 2047707-2018-12-10. Service bulletin. ENGINE AND ENGINE COOLING; EQUIPMENT:APPLIANCE:AIR CONDITIONER. This bulletin provides repair instructions for when DTC P195000, P10EF00, and/or B10F000 appears with no A/C or a MIL.
A011861 2050690_2018-05-21. Service bulletin. EQUIPMENT; ENGINE. This bulletin contains a software update for when the "Reduce Oil Level" message appears and the oil level is not over max specifications.
A011860 2048604_2018-05-21. Service bulletin. ENGINE. This bulletin contains a software update for a MIL on with DTC P008700.
A011859 2050690_2018-05-21. Service bulletin. EQUIPMENT; ENGINE. This bulletin contains a software update for when the "Reduce Oil Level" message appears and the oil level is not over max specifications.
Scheduled Mainte2018-04-16. Service bulletin. ENGINE AND ENGINE COOLING. Oil Capacity Table: For A3 B-Cycle 2.0 TFSI engine: Changed oil spec from 508/509** Castrol EDGE® Professional® 5W40 to 508/509** Castrol EDGE® Professional® 0W20 Long Life IV
A871679 2041717-2018-03-13. Service bulletin. ENGINE; ENGINE AND ENGINE COOLING; EQUIPMENT:APPLIANCE:AIR CONDITIONER. This bulletin applies to any repair that requires replacement of the air conditioning compressor and details how to run a ODIS GFF test plan.
A1915612025303-52018-02-05. Service bulletin. ENGINE AND ENGINE COOLING. Supersedes Technical Service Bulletin Group 19 number 14-50 dated June 20, 2014. Discontinuation and mixing of Audi-approved engine coolants. G11, G12, and G12+ coolants have been replaced by an improved version. G12++ coolant (for service available) has been introduced in MY 2005 for all engines. G13 has been introduced in MY 2008 as factory filling and service.
A171782 2010043-2018-02-05. Service bulletin. ENGINE. This informational bulletin contains all the the Audi Oil Quality Standards that should be used when doing an oil change.
50D3 - Circular2018-02-05. Service bulletin. EQUIPMENT; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL; EQUIPMENT:OTHER:LABELS. Vehicle Emissions Control Information Label - Certain model year 2018 vehicles have been incorrectly labeled with model year 2017 Vehicle Emissions Control Information labels instead of the correct model year 2018 label. This issue will not cause an emissions impact over the standard.
A011731 2047707-2018-02-05. Service bulletin. ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM. This informational bulletin provides instructions for when DTC P195000 appears but there is no customer concern.
A191789 2046712-2018-02-05. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM. This informational bulletin contains guidelines for figuring out why coolant marks are present around the coolant expansion tank cap.
A011717 2047707-2018-02-05. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM. This informational bulletin provides instructions for when DTC P195000 appears but there is no customer concern.
A191777 2046712-2017-10-04. Service bulletin. ENGINE AND ENGINE COOLING. This informational bulletin contains guidelines for figuring out why coolant marks are present around the coolant expansion tank cap.
A171672203811962017-03-02. Service bulletin. ENGINE AND ENGINE COOLING; EQUIPMENT ADAPTIVE/MOBILITY. THIS TECHNICAL SERVICE BULLETIN INSTRUCTS THE READER TO TEST FOR AND REPLACE A DEFECTIVE OIL LEVEL SENSOR.
A171671203811952017-03-02. Service bulletin. ENGINE. THIS TECHNICAL SERVICE BULLETIN INSTRUCTS THE READER TO TEST FOR AND REPLACE A DEFECTIVE OIL LEVEL SENSOR.
A171675203811972016-10-06. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM. THIS TECHNICAL SERVICE BULLETIN INSTRUCTS THE READER TO TEST FOR AND REPLACE A DEFECTIVE OIL LEVEL SENSOR.

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