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Service bulletins for the 2018 Audi TTS

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.

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

By type

By component

By trouble code

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Bulletins, newest first
A4220442038689_42020-06-04. Service bulletin. EQUIPMENT; SUSPENSION. This bulletin contains information on how to fix a clunking or rattling noise heard from the rear suspension when the vehicle is driven over bumps.
TT 91 18 062020-06-04. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. Apple car play function.
A4020062059474_12020-06-04. Service bulletin. EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY; SUSPENSION. This bulletin contains instructions for correcting buffer stop noise (rumbling or squeaking from the front end).
A0020372059437_12020-06-04. Service bulletin. ENGINE; FUEL SYSTEM, GASOLINE:DELIVERY. The informational bulletin explains why during COVID-19 there is winter-blend fuel during a warmer season and causing some issues.
A9020442032113_32020-05-07. Service bulletin. ELECTRICAL SYSTEM. This information bulletin contains a background on the outside air temperature reading.
A9120392018187112020-03-05. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. This bulletin contains inspection guidelines for radio interference that causes noises in the speaker.
18AUUSMaint02202020-03-05. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. OIL CHART SECTION: CHANGED - Castrol Oil to 'Audi approved XXXX-Refer to the Parts Catalog' for all models.
A9120342042506_92020-03-05. Service bulletin. EQUIPMENT. This technical service bulletin explains how to determine the status of activation keys (that affect the function of Audi drive select, cruise control, navigation, Bluetooth, smartphone interface and voice recognition), and how to update them.
18AUUSMaint01302020-02-08. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY. Additional Maintenance Section: ADDED to Battery - Connected gateway 'for Audi Connected Services' (if applicable)
A9119232037809_52020-01-08. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY. This informational bulletin contains instructions about updating the navigation map.
A9119202058094_12020-01-08. Service bulletin. EQUIPMENT. This bulletin contains instructions for when the audio sounds distorted. 2016,2017,2019 TTRS
20AUTIRECHAINS2020-01-08. Service bulletin. EQUIPMENT; TIRES; EQUIPMENT ADAPTIVE/MOBILITY. New document 2004-2020 A4 allroad, A6 allroad, A8L, R8 Spyder
A1919992052657_32019-11-07. Service bulletin. EQUIPMENT. This informational bulletin contains details on conditions for replacing the water pump and/or thermostat housing. 2015-2019 A3 Cabriolet, 2017-2018 S3 Cabriolet, 2018-2019 A5 Sportback, S5 Sportback, 2013--2019 TTR
A9119742037809_42019-09-09. Service bulletin. EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM). This informational bulletin contains instructions about updating the navigation map. 2015-2021 A3 2017-2021 A4, Q7, and R8 2018-2021 A5, Q5, and SQ5 2016-2021 TT, TTS, TTRS, and Roadster 2019-2021 A6, A7, A8, Q3, Q8, and Audi e-tron quattro
A4819782053869_22019-06-06. Service bulletin. STEERING. This bulletin contains repair instructions for when DTC B145504 with symptom code 7340800. This document applies to every 2016-2019 Audi Model.
18AUUSMaint501192019-06-05. Service bulletin. EQUIPMENT. Additional Maintenance Items Section: REMOVED: S5 from 40K mile Stronic Transmission Service. This document also applies to the 2018 TT RS.
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
Audi MY 2018 2012019-04-08. Service bulletin. TIRES. ADDED to footnote (b at the end of the chart: "If vehicle has a top speed of 174 mph, it has the Dynamic Plus Package which can be identified by PR Code PAB" - A3 2.0L, S3 2.0L, RS 3 2.5L, A3 Cabriolet 2.0L, A3 e-tron Sportback 1.4L, A4 2.0L (190 hp), A4 2.0L (252 hp), S4 3.0L, A4 allroad 2.0L, A5 Cabriolet 2.0L, S5 Cabriolet 3.0L, A5 Coupe 2.0L, S5 Coupe 3.0L, A5 Sportback 2.0L, S5 Sportback 3.0L, RS 5 2.9L, A6 2.0L, A6 3.0L, S6 4.0L, A7 3.0L, S7 4.0L, RS7 4.0L (560 hp), RS7 4.0L (performance 605 hp), A8 3.0L, A8L 3.0L, A8 4.0L, A8L 4.0L, S8 4.0L, S8 Plus 4.0L, Q3 2.0L, Q5 2.0L, SQ5 3.0L, Q7 2.0L, Q7 3.0L, SQ7 4.0L, R8 Coupe 5.2L, R8 Spyder 5.2L (540hp), R8 Spyder 5.2L (610hp), TT 2.0L, TTS 2.0L, TTRS 2.5L.
A461903 20341812019-04-08. Service bulletin. SERVICE BRAKES. This technical service bulletin provides troubleshooting for brake noise.
A441969 20225632019-04-08. Service bulletin. STEERING. This bulletin provides information regarding vibrations or movement that are felt in the wheel.
A001915 20478122019-04-08. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. This informational bulletin contains instructions for setting up and using the SD creator program.
A481977 2053869-2019-04-01. Service bulletin. STEERING; EQUIPMENT. This bulletin contains repair instructions for when DTC B145504 with symptom code 7340800.
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.
2018 Audi 2019012019-04-01. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; EQUIPMENT. Oil Capacity Table: Changed Oil Specs for all models

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