Audi A3 2017–2018 — technical service bulletin
Bulletin A3421512050725_2 · NHTSA communication 10188593 · issued Mar 8, 2021
Technical service bulletin
communication type
Power Train
component
2017–2018
model years
2
vehicle entries
Official summary
This bulletin contains repair instructions for when TAC directs the tech to this TSB in regards to DTCs stored in the TCM.
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.