Audi A4 2017–2021 — technical service bulletin
Bulletin A3923542048671_6 · NHTSA communication 10236591 · issued May 9, 2023
Technical service bulletin
communication type
Electrical System
component
2017–2021
model years
49
vehicle entries
Official summary
This bulletin provides a software update for when "All Wheel Drive Malfunction Message" is displayed in the instrument cluster and DTC U030000 is logged.
Vehicles covered
- 2017 Audi A4
- 2018 Audi A4
- 2019 Audi A4
- 2020 Audi A4
- 2021 Audi A4
- 2020 Audi A4 Allroad
- 2021 Audi A4 Allroad
- 2018 Audi A5
- 2019 Audi A5
- 2020 Audi A5
- 2021 Audi A5
- 2018 Audi A5 Cabriolet
- 2019 Audi A5 Cabriolet
- 2020 Audi A5 Cabriolet
- 2021 Audi A5 Cabriolet
- 2019 Audi A6
- 2020 Audi A6
- 2021 Audi A6
- 2020 Audi A6 Allroad
- 2021 Audi A6 Allroad
- 2019 Audi A7
- 2020 Audi A7
- 2021 Audi A7
- 2021 Audi A7 E
- 2019 Audi Q5
- 2020 Audi Q5
- 2021 Audi Q5
- 2020 Audi Q5 PHEV
- 2021 Audi Q5 PHEV
- 2018 Audi RS 5
- 2019 Audi RS 5
- 2020 Audi RS 5
- 2021 Audi RS 6 Avant
- 2021 Audi RS 7
- 2018 Audi S4
- 2019 Audi S4
- 2020 Audi S4
- 2021 Audi S4
- 2018 Audi S5
- 2019 Audi S5
- 2020 Audi S5
- 2021 Audi S5
- 2020 Audi S6
- 2021 Audi S6
- 2020 Audi S7
- 2021 Audi S7
- 2019 Audi SQ5
- 2020 Audi SQ5
- 2021 Audi SQ5
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.