# Service bulletin A1921222046712\_3 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. - Type: Service bulletin - NHTSA id: 10199717 - Published by NHTSA: 2021\-08\-04 - Manufacturer's number: A1921222046712\_3 - Manufacturer's date: 2021\-07\-26 - NHTSA component: ENGINE AND ENGINE COOLING; EQUIPMENT; FUEL SYSTEM, GASOLINE:STORAGE:TANK ASSEMBLY:FILLER PIPE AND CAP ## NHTSA's summary This informational bulletin contains guidelines for figuring out why coolant marks are present around the coolant expansion tank cap. ## The document - [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2021/MC-10199717-0001.pdf) - [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2021/MC-10199717-9999.pdf) The document is the manufacturer's. This site does not hold it. ## Components Engine, Equipment and accessories, Fuel system, Fuel tank ## Vehicles listed - 2012 to 2013 AUDI A3 - 2014 AUDI A3 - 2015 to 2020 AUDI A3 - 2015 AUDI A3 ETRON - 2016 to 2018 AUDI A3 SPORTBACK E\-TRON - 2012 to 2021 AUDI A4 - 2012 to 2021 AUDI A5 - 2012 to 2021 AUDI A5 CABRIOLET - 2012 to 2021 AUDI A6 - 2020 to 2021 AUDI A6 ALLROAD - 2012 to 2021 AUDI A7 - 2021 AUDI A7 E - 2012 to 2020 AUDI A8 - 2021 AUDI A8 - 2021 AUDI A8 L E - 2012 to 2021 AUDI ALLROAD - 2020 AUDI E\-TRON - 2021 AUDI E\-TRON - 2015 to 2021 AUDI Q3 - 2012 to 2021 AUDI Q5 - 2012 to 2015 AUDI Q7 - 2016 AUDI Q7 - 2017 to 2021 AUDI Q7 - 2019 to 2021 AUDI Q8 - 2012 AUDI R8 - 2014 to 2015 AUDI R8 - 2017 to 2018 AUDI R8 - 2020 to 2021 AUDI R8 - 2017 to 2020 AUDI RS 3 - 2018 to 2019 AUDI RS 5 - 2020 AUDI RS 5 - 2021 AUDI RS 5 - 2013 to 2015 AUDI RS 5 CABRIOLET - 2021 AUDI RS 6 AVANT - 2014 to 2018 AUDI RS 7 - 2021 AUDI RS 7 - 2020 to 2021 AUDI RS Q8 - 2021 AUDI RS3 - 2012 AUDI RS5 - 2013 to 2015 AUDI RS5 - 2016 to 2017 AUDI RS5 - 2016 to 2017 AUDI RS5 CABRIOLET - 2016 to 2018 AUDI RS6 - 2020 AUDI RS6 - 2015 to 2020 AUDI S3 - 2021 AUDI S3 - 2012 to 2016 AUDI S4 - 2018 to 2021 AUDI S4 - 2012 to 2021 AUDI S5 - 2015 to 2021 AUDI S5 CABRIOLET - 2012 AUDI S6 - 2013 to 2018 AUDI S6 - 2019 AUDI S6 - 2020 to 2021 AUDI S6 - 2012 AUDI S7 - 2013 to 2018 AUDI S7 - 2020 to 2021 AUDI S7 - 2013 to 2016 AUDI S8 - 2020 to 2021 AUDI S8 - 2018 to 2021 AUDI SQ5 - 2020 to 2021 AUDI SQ7 - 2020 to 2021 AUDI SQ8 - 2012 to 2021 AUDI TT - 2013 AUDI TT RS - 2018 to 2021 AUDI TT RS - 2012 to 2021 AUDI TTS ## Recalls for the same vehicles and component - [20V076000](/recalls/nhtsa/20V076000.md), 2020-02-12: FUEL SYSTEM, GASOLINE:STORAGE:TANK ASSEMBLY ## Other bulletins for the same vehicles and component - [A9724052069123\_2](/bulletins/10249231.md), 2024-02-06, Service bulletin: FUEL SYSTEM, DIESEL:STORAGE:TANK ASSEMBLY. This bulletin provides information for when DTC U064100, or U06400 are stored for fuel tank breather, and the MIL is illuminated. - [A2022482067907\_1](/bulletins/10220367.md), 2022-10-05, Service bulletin: FUEL SYSTEM, DIESEL:STORAGE:TANK ASSEMBLY. This bulletin advises that in the event that the fuel tank needs to be replaced, a slight modification is needed to ensure the fitment of the of the reductant agent filler neck. - [A2020252050276\_5](/bulletins/10171805.md), 2020-03-05, Service bulletin: FUEL SYSTEM, OTHER:STORAGE:TANK ASSEMBLY; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This bulletin contains repair instructions for when the customer has problems filling the fuel tank and DTC P045100, P044100, P202500, and/or P045300 is present. - [A2019212052368\_4](/bulletins/10165805.md), 2019-11-07, Service bulletin: FUEL SYSTEM, DIESEL:STORAGE:TANK ASSEMBLY. This bulletin contains instructions for repairing when the fuel gauge does not show full. - [A9719652056234\_1](/bulletins/10165566.md), 2019-10-07, Service bulletin: FUEL SYSTEM, DIESEL:STORAGE:TANK ASSEMBLY. This bulletin contains repair instructions for when the fuel gauge does not read full after filling up or it reads as empty with various DTCs. - [A2019202054072\_4](/bulletins/10165549.md), 2019-10-02, Service bulletin: FUEL SYSTEM, DIESEL:STORAGE:TANK ASSEMBLY. This bulletin contains repair instructions for when the fuel pump shuts off while refueling before the tank is full. - [A2019152054072\_3](/bulletins/10159805.md), 2019-06-05, Service bulletin: FUEL SYSTEM, GASOLINE:STORAGE:TANK ASSEMBLY; FUEL SYSTEM, DIESEL:STORAGE:TANK ASSEMBLY. This bulletin contains repair instructions for when the fuel pump shuts off while refueling before the tank is full. - [A011877 2051053\-](/bulletins/10144627.md), 2018-09-17, Service bulletin: FUEL SYSTEM, GASOLINE:STORAGE:TANK ASSEMBLY:FILLER PIPE AND CAP. This bulletin contains repair instructions for DTCs P24CC00 and P24CB00. - [A011871 2051053\-](/bulletins/10144586.md), 2018-09-17, Service bulletin: FUEL SYSTEM, GASOLINE:STORAGE:TANK ASSEMBLY:FILLER PIPE AND CAP; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This bulletin contains repair instructions for DTCs P24CC00 and P24CB00. - [A011869 2044156\-](/bulletins/10144584.md), 2018-09-17, Service bulletin: FUEL SYSTEM, GASOLINE:STORAGE:TANK ASSEMBLY:FILLER PIPE AND CAP. This bulletin contains repair instructions for DTC P045600 in the ECM. 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