Audi A4 2019–2021 — technical service bulletin
Bulletin A5723022058452_4 · NHTSA communication 10233544 · issued Mar 23, 2023
Technical service bulletin
communication type
Visibility
component
2019–2021
model years
37
vehicle entries
Official summary
This bulletin provides information for when the rear window defogger is not operational.
Vehicles covered
- 2019 Audi A4
- 2020 Audi A4
- 2021 Audi A4
- 2020 Audi A4 Allroad
- 2021 Audi A4 Allroad
- 2019 Audi A5
- 2020 Audi A5
- 2021 Audi A5
- 2019 Audi A5 Cabriolet
- 2020 Audi A5 Cabriolet
- 2021 Audi A5 Cabriolet
- 2019 Audi E-Tron
- 2021 Audi E-Tron
- 2019 Audi Q7
- 2020 Audi Q7
- 2021 Audi Q7
- 2019 Audi Q8
- 2020 Audi Q8
- 2021 Audi Q8
- 2019 Audi RS 5
- 2020 Audi RS 5
- 2021 Audi RS 5
- 2020 Audi RS Q8
- 2021 Audi RS Q8
- 2019 Audi S4
- 2020 Audi S4
- 2021 Audi S4
- 2019 Audi S5
- 2020 Audi S5
- 2021 Audi S5
- 2019 Audi S5 Cabriolet
- 2020 Audi S5 Cabriolet
- 2021 Audi S5 Cabriolet
- 2020 Audi SQ7
- 2021 Audi SQ7
- 2020 Audi SQ8
- 2021 Audi SQ8
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.