Audi A4 2017 — technical service bulletin
Bulletin Closure 45E3 · NHTSA communication 10201526 · issued Sep 16, 2021
Technical service bulletin
communication type
Electrical System
component
2017
model years
1
vehicle entries
Official summary
On certain Audi A4 vehicles manufactured within a specific period, a software update package for the ESP control unit and instrument cluster has been prepared - Campaign Closure Notice à ¢à  à  Action Expiring
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.