Toyota Corolla 2011–2012 — technical service bulletin
Bulletin TC-12-028 · NHTSA communication 10051778 · issued Oct 3, 2012
Technical service bulletin
communication type
Equipment
component
2011–2012
model years
2
vehicle entries
Official summary
Toyota: on some model vehicles, the positive temperature coefficient (ptc) heater relays were not installed at time of manufactured. Models 2011-2012 corolla. *pe
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.