Audi A3 2017–2022 — technical service bulletin

Bulletin A1921262061918_4 · NHTSA communication 10205898 · issued Dec 22, 2021

Technical service bulletin

communication type

Equipment

component

2017–2022

model years

vehicle entries

Official summary

This bulletin provides guidance on diagnosing a coolant light concern with normal coolant level in the tank.

Vehicles covered

2017 Audi A3
2018 Audi A3
2019 Audi A3
2020 Audi A3
2022 Audi A3
2017 Audi A3 Sportback E-Tron
2018 Audi A3 Sportback E-Tron
2017 Audi A4
2018 Audi A4
2019 Audi A4
2020 Audi A4
2021 Audi A4
2022 Audi A4
2017 Audi A5
2018 Audi A5
2019 Audi A5
2020 Audi A5
2021 Audi A5
2022 Audi A5
2017 Audi A5 Cabriolet
2018 Audi A5 Cabriolet
2019 Audi A5 Cabriolet
2020 Audi A5 Cabriolet
2021 Audi A5 Cabriolet
2017 Audi A6
2018 Audi A6
2019 Audi A6
2020 Audi A6
2021 Audi A6
2022 Audi A6
2020 Audi A6 Allroad
2021 Audi A6 Allroad
2017 Audi A7
2018 Audi A7
2019 Audi A7
2020 Audi A7
2021 Audi A7
2022 Audi A7
2021 Audi A7 E
2022 Audi A7 E
2017 Audi A8
2018 Audi A8
2019 Audi A8
2020 Audi A8
2021 Audi A8
2022 Audi A8
2020 Audi A8 L E
2021 Audi A8 L E
2022 Audi A8 PHEV
2017 Audi Allroad
2018 Audi Allroad
2019 Audi Allroad
2020 Audi Allroad
2021 Audi Allroad
2022 Audi Allroad
2019 Audi E-Tron
2020 Audi E-Tron
2021 Audi E-Tron
2022 Audi E-Tron
2022 Audi E-Tron GT

What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.