Audi A3 2011–2026 — technical service bulletin
Bulletin TSB_2074436_2 · NHTSA communication 11022668 · issued Aug 15, 2025
Technical service bulletin
communication type
Unknown OR Other
component
2011–2026
model years
60
vehicle entries
Official summary
This bulletin provides information when the horn sound quality is poor.
Vehicles covered
- 2011 Audi A3
- 2012 Audi A3
- 2013 Audi A3
- 2015 Audi A3
- 2016 Audi A3
- 2017 Audi A3
- 2018 Audi A3
- 2019 Audi A3
- 2020 Audi A3
- 2022 Audi A3
- 2023 Audi A3
- 2024 Audi A3
- 2025 Audi A3
- 2026 Audi A3
- 2015 Audi A3 Cabriolet
- 2016 Audi A3 Cabriolet
- 2017 Audi A3 Cabriolet
- 2018 Audi A3 Cabriolet
- 2019 Audi A3 Cabriolet
- 2016 Audi A3 Sportback E-Tron
- 2017 Audi A3 Sportback E-Tron
- 2018 Audi A3 Sportback E-Tron
- 2011 Audi A4
- 2012 Audi A4
- 2013 Audi A4
- 2014 Audi A4
- 2015 Audi A4
- 2016 Audi A4
- 2017 Audi A4
- 2018 Audi A4
- 2019 Audi A4
- 2020 Audi A4
- 2021 Audi A4
- 2022 Audi A4
- 2023 Audi A4
- 2024 Audi A4
- 2025 Audi A4
- 2017 Audi A4 Allroad
- 2018 Audi A4 Allroad
- 2019 Audi A4 Allroad
- 2020 Audi A4 Allroad
- 2021 Audi A4 Allroad
- 2022 Audi A4 Allroad
- 2023 Audi A4 Allroad
- 2024 Audi A4 Allroad
- 2025 Audi A4 Allroad
- 2011 Audi A4 Avant
- 2012 Audi A4 Avant
- 2011 Audi A5
- 2012 Audi A5
- 2013 Audi A5
- 2014 Audi A5
- 2015 Audi A5
- 2016 Audi A5
- 2017 Audi A5
- 2018 Audi A5
- 2019 Audi A5
- 2020 Audi A5
- 2021 Audi A5
- 2022 Audi A5
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.