Audi A4 2008–2011 — technical service bulletin
Bulletin 34 13 13 2028650 · NHTSA communication 10212679 · issued Jan 15, 2013
Technical service bulletin
communication type
Wheels
component
2008–2011
model years
16
vehicle entries
Official summary
Grinding or wheel bearing type noises from front when accelerating or at constant speed
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.