Audi A4 2017 — technical service bulletin
Bulletin 17AUUSMaint0220 · NHTSA communication 10171759 · issued Feb 12, 2020
Technical service bulletin
communication type
Equipment
component
2017
model years
14
vehicle entries
Official summary
Additional Maintenance Section: AWD Clutch - Change fluid ( if equipped): ADDED: S3. Oil Capacity Chart: CHANGED: Castrol Oil to 'Audi approved XXXX-Refer to the Parts Catalog' for all models.
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.