Audi A4 2005–2011 — technical service bulletin
Bulletin 46133220166818 · NHTSA communication 10251035 · issued Mar 18, 2013
Technical service bulletin
communication type
Service Brakes
component
2005–2011
model years
14
vehicle entries
Official summary
Brakes make moaning or "muh" noise when accelerating from stop or turning at slow speeds
Vehicles covered
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.