Audi Q5 2018–2020 — technical service bulletin
Bulletin A9421512063766_2 · NHTSA communication 10203720 · issued Nov 30, 2021
Technical service bulletin
communication type
Exterior Lighting
component
2018–2020
model years
7
vehicle entries
Official summary
This bulletin contains repair instructions for DTC B12CB15 and/or B12CC15 with a tail warning lamp.
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.