Audi A4 2016–2020 — technical service bulletin
Bulletin A3420472058875_1 · NHTSA communication 10172967 · issued Mar 24, 2020
Technical service bulletin
communication type
Unknown / 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.