Audi A3 2011–2027 — technical service bulletin
Bulletin TSB_2074436_3 · NHTSA communication 11036917 · issued Aug 26, 2026
Technical service bulletin
communication type
Unknown / Other
component
2011–2027
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.