Toyota Prius 2017–2020 — technical service bulletin
Bulletin T-SB-0031-20 · NHTSA communication 10174878 · issued Apr 1, 2020
Technical service bulletin
communication type
Electrical System
component
2017–2020
model years
5
vehicle entries
Official summary
TSB: SUPERSESSION NOTICE The information contained in this bulletin supersedes Service Bulletin No. T-SB-0236-17. Service Bulletin No. T-SB-0236-17 is obsolete and any printed versions should be discarded. Audio Head Unit Software Update (Denso)
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.