Audi A5 2025 — technical service bulletin
Bulletin TSB_2079999_2 · NHTSA communication 11032161 · issued Apr 13, 2026
Technical service bulletin
communication type
Electrical System
component
2025
model years
12
vehicle entries
Official summary
This bulletin provides information when the volume control cannot be operated; background lighting is not working; DTC U11B900.
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.