Toyota Prius 2013 — technical service bulletin
Bulletin T-SB-0194-12 · NHTSA communication 10133980 · issued Oct 16, 2012
Technical service bulletin
communication type
Electrical System
component
2013
model years
3
vehicle entries
Official summary
If Prius vehicles are put into storage, the state of charge (SOC) of its HV battery and auxiliary battery will gradually decrease. To prevent the auxiliary battery from becoming discharged during storage, proper maintenance is necessary.
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.