Audi A6 2011–2013 — technical service bulletin
Bulletin A911874 2039515_ · NHTSA communication 10133310 · issued Feb 6, 2018
Technical service bulletin
communication type
Equipment
component
2011–2013
model years
6
vehicle entries
Official summary
This informational bulletin is hardware update for vehicles that can no longer receive 2G service from T Mobile.
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.