Kia Optima 2012–2013 — technical service bulletin
Bulletin TB-PS-422 · NHTSA communication 10058510 · issued Jul 1, 2015
Technical service bulletin
communication type
Electronic Stability Control (esc)
component
2012–2013
model years
2
vehicle entries
Official summary
Kia: some vehicles would hesitate on hard acceleration and electronic stability control (esc) light illuminates; would need to replace hydraulic electronic control unit (hecu) with latest software module. Model 2012-13 optima. *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.