Kia Optima Hybrid 2014–2016 — technical service bulletin
Bulletin TSBCHA067 · NHTSA communication 10089466 · issued Mar 15, 2016
Technical service bulletin
communication type
Electrical System
component
2014–2016
model years
3
vehicle entries
Official summary
Tsb: ecu upgrade mil on with dtc c1356 - this bulletin provides information related to an ibau (integrated brake actuation unit) software upgrade for some 2014~2016my optima hybrid (tf hev) vehicles, produced from december 2, 2013 through july 22, 2015, which may exhibit a malfunction indicator light (mil) on with dtc c1356 and no drivability concerns. To resolve the concern, reprogram the ibau using the gds/kds download, as described in this bulletin. For confirmation that the latest reflash has been performed, verify rom id using the tables in this tsb.
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.