Audi A8 2013–2017 — technical service bulletin
Bulletin A21162320349993 · NHTSA communication 10093244 · issued Aug 2, 2016
Technical service bulletin
communication type
Engine
component
2013–2017
model years
25
vehicle entries
Official summary
This technical service bulletin explains why the impeller side of the bank 2 turbocharger looks discolored.
Vehicles covered
- 2013 Audi A8
- 2014 Audi A8
- 2015 Audi A8
- 2016 Audi A8
- 2017 Audi A8
- 2014 Audi RS 7
- 2015 Audi RS 7
- 2016 Audi RS 7
- 2017 Audi RS 7
- 2013 Audi RS7
- 2013 Audi S6
- 2014 Audi S6
- 2015 Audi S6
- 2016 Audi S6
- 2017 Audi S6
- 2013 Audi S7
- 2014 Audi S7
- 2015 Audi S7
- 2016 Audi S7
- 2017 Audi S7
- 2013 Audi S8
- 2014 Audi S8
- 2015 Audi S8
- 2016 Audi S8
- 2017 Audi S8
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.