Audi A3 2017–2019 — technical service bulletin
Bulletin Dealer24GJdeac · NHTSA communication 10200447 · issued Aug 11, 2021
Technical service bulletin
communication type
Engine and Engine Cooling
component
2017–2019
model years
3
vehicle entries
Official summary
Audi is providing an Engine Control Module (ECM) software update to address elevated tailpipe emissions that were found during vehicle testing. This software will also improve drivability and provide other diagnostic improvements. Deactivation notice.
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.