Audi S4 2008–2013 — technical service bulletin
Bulletin A461522 2027636- · NHTSA communication 10123768 · issued Sep 11, 2015
Technical service bulletin
communication type
Equipment
component
2008–2013
model years
13
vehicle entries
Official summary
Supersedes Technical Service Bulletin Group 46 number 15-21 dated September 11, 2015. Customer may complain about brake squeak or squeal with light to moderate pedal pressure.
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.