Audi A4 2020–2023 — technical service bulletin
Bulletin A3423642067653_4 · NHTSA communication 10245527 · issued Nov 1, 2023
Technical service bulletin
communication type
Engine and Engine Cooling
component
2020–2023
model years
18
vehicle entries
Official summary
This bulletin provides instructions for when "Gearbox Malfunction" and/or vehicle does not shift up or down, and/or vehicle is in limp mode home, and/or "reverse gear is unavailable" displayed in the instrument cluster, and/or "You can continue driving (functions limited" with DTCs P071800 and/or P276800 and possible in combination with DTC P081100 and/or P081E00.
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.