Audi A6 2013–2016 — technical service bulletin
Bulletin A171893 2040644_ · NHTSA communication 10138314 · issued Mar 28, 2018
Technical service bulletin
communication type
Engine and Engine Cooling
component
2013–2016
model years
12
vehicle entries
Official summary
This bulletin provides repair instructions on diagnosing and replacing a leak in the crankcase breather module.
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.