Audi E-Tron 2021–2024 — technical service bulletin
Bulletin A5723032062887_3 · NHTSA communication 10233546 · issued Mar 31, 2023
Technical service bulletin
communication type
Electrical System
component
2021–2024
model years
4
vehicle entries
Official summary
This bulletin provides instructions for when key adaptation fails with error messages "FAZ1552E Key status not valid" and "FAZ1540E Action not successful" when performing the vehicle immobilizer adaptation test plan.
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.