Audi A4 2016–2020 — technical service bulletin
Bulletin TSB_2074766_3 · NHTSA communication 11031002 · issued Mar 20, 2026
Technical service bulletin
communication type
Power Train
component
2016–2020
model years
11
vehicle entries
Official summary
This bulletin provides information when there are humming noises when cornering; DL-382.
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.