Audi A4 2016–2020 — technical service bulletin
Bulletin A3420472058875_1 · NHTSA communication 10172967 · issued Mar 24, 2020
Technical service bulletin
communication type
Unknown OR Other
component
2016–2020
model years
17
vehicle entries
Official summary
This bulletin contains instructions for oil leaking from the vehicle without a DTC.
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.