Audi A3 2020–2025 — technical service bulletin
Bulletin TSB-2074475_3 · NHTSA communication 11015767 · issued Feb 24, 2025
Technical service bulletin
communication type
Power Train
component
2020–2025
model years
18
vehicle entries
Official summary
This bulletin provides information when DTC U010100 , Lost Communication with TCM in diagnostic address 23 occurs.
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.