Toyota Prius 2006–2009 — technical service bulletin
Bulletin TC-09-018 · NHTSA communication 10032448 · issued Dec 16, 2009
Technical service bulletin
communication type
Exterior Lighting
component
2006–2009
model years
4
vehicle entries
Official summary
Toyota: hid headlight customer support program. Unlike halogen light bulbs which simply stop working at the end of their useful life, as the hid bulb nears the end of life it may exhibit a condition where the bulb may flicker or intermittently be inoperative. Csc letter has been rec'd. *pe
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.