Audi A4 2017–2019 — technical service bulletin

Bulletin DC_91CD20221021 · NHTSA communication 10225516 · issued Oct 21, 2022

Technical service bulletin

communication type

Equipment

component

2017–2019

model years

vehicle entries

Official summary

3G Turndown (91CD) Warranty Claim Documentation

Vehicles covered

2017 Audi A4
2018 Audi A4
2018 Audi A5
2018 Audi A5 Cabriolet
2018 Audi Q5
2017 Audi Q7
2018 Audi Q7
2018 Audi RS 5
2019 Audi RS 5
2018 Audi S4
2018 Audi S5
2018 Audi S5 Cabriolet
2018 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.