Audi A4 2009–2014 — technical service bulletin
Bulletin 39141420289023 · NHTSA communication 10226540 · issued May 5, 2014
Technical service bulletin
communication type
Suspension
component
2009–2014
model years
32
vehicle entries
Official summary
Squealing, howling, or whistling noise from under vehicle when cold
Vehicles covered
- 2009 Audi A4
- 2010 Audi A4
- 2011 Audi A4
- 2012 Audi A4
- 2013 Audi A4
- 2014 Audi A4
- 2009 Audi A5
- 2010 Audi A5
- 2011 Audi A5
- 2012 Audi A5
- 2013 Audi A5
- 2014 Audi A5
- 2009 Audi A5 Cabriolet
- 2010 Audi A5 Cabriolet
- 2011 Audi A5 Cabriolet
- 2012 Audi A5 Cabriolet
- 2013 Audi A5 Cabriolet
- 2014 Audi A5 Cabriolet
- 2012 Audi A6
- 2012 Audi A7
- 2011 Audi A8
- 2012 Audi A8
- 2009 Audi Q5
- 2010 Audi Q5
- 2011 Audi Q5
- 2012 Audi Q5
- 2013 Audi Q5
- 2014 Audi Q5
- 2009 Audi Q7
- 2010 Audi Q7
- 2011 Audi Q7
- 2012 Audi Q7
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.