Kia Optima 2014–2018 — technical service bulletin
Bulletin VPI1802_TSB_R5 · NHTSA communication 10152904 · issued Dec 20, 2018
Technical service bulletin
communication type
Electrical System
component
2014–2018
model years
14
vehicle entries
Official summary
PRODUCT IMPROVEMENT CAMPAIGN - This bulletin has been revised to include additional information. This bulletin provides information related to a software update to the Engine Control Unit (ECU) to install the Knock Sensor Detection System (KSDS) in order to protect the engine from excessive connecting rod bearing damage.
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.