Audi A4 2009–2013 — technical service bulletin
Bulletin A01166520354544 · NHTSA communication 10094894 · issued May 4, 2016
Technical service bulletin
communication type
Engine and Engine Cooling
component
2009–2013
model years
25
vehicle entries
Official summary
This technical service bulletin contains instructions for pressure washing ports to resolve an "air system -- action required" message.
Vehicles covered
- 2009 Audi A4
- 2010 Audi A4
- 2011 Audi A4 Avant
- 2012 Audi A4 Avant
- 2010 Audi A5
- 2010 Audi A5 Cabriolet
- 2011 Audi A5 Cabriolet
- 2012 Audi A5 Cabriolet
- 2013 Audi A5 Cabriolet
- 2009 Audi A6
- 2010 Audi A6
- 2011 Audi A6
- 2012 Audi A6
- 2012 Audi A7
- 2009 Audi Q5
- 2010 Audi Q5
- 2011 Audi Q5
- 2012 Audi Q5
- 2011 Audi Q7
- 2012 Audi Q7
- 2009 Audi S4
- 2010 Audi S4
- 2011 Audi S4
- 2012 Audi S4
- 2010 Audi S5
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.