Toyota Prius 2010–2013 — technical service bulletin
Bulletin T-SB-0198-11 Rev · NHTSA communication 10131908 · issued Feb 20, 2014
Technical service bulletin
communication type
Engine and Engine Cooling
component
2010–2013
model years
4
vehicle entries
Official summary
For vehicles that are used under certain severe operating conditions, the HV Battery Cooling Fan may experience an excessive buildup of dust, lint, or other debris that can reduce the efficiency of the HV Battery Cooling System. HV Battery Cooling Fan maintenance and cleaning should be performed to address this condition.
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.