Audi Q5 2025 — technical service bulletin
Bulletin TSB_2081184_1 · NHTSA communication 11031037 · issued Mar 10, 2026
Technical service bulletin
communication type
Electrical System
component
2025
model years
4
vehicle entries
Official summary
This bulletin provides informaiton when the engine warning lamp lights up; DTC U366500, P2D8800, or PD8B00 logged in thermal management control unit.
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.