Audi A4 Allroad 2017–2018 — technical service bulletin
Bulletin A901787 2049092- · NHTSA communication 10133254 · issued Dec 8, 2017
Technical service bulletin
communication type
Electronic Stability Control (esc)
component
2017–2018
model years
8
vehicle entries
Official summary
This bulletin contains a software update for when the SOS message appears but does not log a DTC.
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.