Kia Optima Service Bulletins
803 manufacturer communications on file.
- December 17, 2025•Document ID: 11026980OtherSTRUCTURE:BODY
- Mfr Comm. #:
- CS2312_OWNR
- Date Added:
- January 5, 2026
- Manufacturer:
- KIA
SummaryCUSTOMER SATISFACTION CAMPAIGN: OWNER NOTIFICATION (CS2312) - This document is the owner notification advising that Kia is conducting Customer Satisfaction Campaign. A software upgrade that addresses the social media theft method has been made available to owners of eligible Kia model vehicles free of charge at authorized Kia dealers since 2023. In addition to the anti-theft software, a new zinc-reinforced ignition cylinder protector hardware upgrade has been developed and can be installed at the ignition cylinder location to provide additional protection against the social media theft method. Because the subject Kia vehicles were not factory-equipped with an engine immobilizer and were previously eligible for the software upgrade, these vehicles are eligible until March 31, 2027, to have the ignition cylinder protector installed—if requested—at no cost through an authorized Kia dealership. (Mailing of these notifications to vehicle owners will be completed from December 17, 2025 through February 27, 2026)
Associated Products (73)Associated Documents - December 10, 2025•Document ID: 11026533Service Bulletin/Repair InstructionsENGINE
- Mfr Comm. #:
- SC340_TSB_R3
- Date Added:
- December 10, 2025
- Manufacturer:
- KIA
SummaryTECHNICAL SERVICE BULLETIN: VOLUNTARY EMISSIONS SERVICE CAMPAIGN: THETA II 2.4L GDI EMISSIONS ECM LOGIC IMPROVEMENT (SC340) - This bulletin has been revised to include additional information. New/revised sections of this bulletin are indicated by a black bar in the margin area. This bulletin provides information to upgrade the Electronic Control Module ‘ECM’ system software for certain 2016-2022MY vehicles equipped with 2.4L Theta II engines listed in the table below. Kia has become aware that certain 2016-2022MY vehicles equipped with 2.4L Theta II engines may have engine calibrations that were not optimized for emissions standards under certain specific conditions. These calibrations may cause the vehicle to release air pollutants which exceed Federal and California standards. These standards were established to protect your health and welfare from the dangers of air pollution.
Associated Products (11)Associated Documents - December 9, 2025•Document ID: 11026698OtherBACK OVER PREVENTION: WARNINGS
- Mfr Comm. #:
- PS797
- Date Added:
- December 18, 2025
- Manufacturer:
- KIA
SummaryPITSTOP: TECHNICAL OPERATIONS: EXTERNAL DAMAGE TO ULTRASONIC SENSOR: This Pitstop provides information related to Parking Distance Warning (PDW) alerts and repairs involving ultrasonic sensors. The PDW system alerts the driver while parking, by calculating distance based on the difference in signal transmission and reception times between the vehicle (ultrasonic sensor) and an object. The membrane film of the ultrasonic sensor is used for object detention and can be damaged by stone chips or foreign substances while driving. Damage to the cover of the ultrasonic sensor can also lead to damage to the internal circuit. As a result of this external damage, the PDW system may not receive the proper signal from the ultrasonic sensor. In some cases, the system may cause a false alarm, no alert, or phantom warnings by a “Warning Lamp’ to be displayed on the cluster. The ultrasonic sensor membrane film should be always inspected for external damage and if any part replacement should be treated as a general repair, not as a warranty claim repair for this concern. (Please note that this Pitstop only applies to models/trims that are equipped with the ultrasonic sensors.)
Associated Products (157)Associated Documents - November 27, 2025•Document ID: 11025897EmissionsENGINE
- Mfr Comm. #:
- SC340_OWNR_JF101
- Date Added:
- December 2, 2025
- Manufacturer:
- KIA
SummaryVOLUNTARY EMISSIONS SERVICE CAMPAIGN: OWNER NOTIFICATION (SC340 FLIGHT 101 / JF) - This document is the owner notification advising that Kia is conducting a Voluntary Emissions Service Campaign to improve the emissions software logic in the Electronic Control Module (ECM) for certain 2016-2020 MY Optima vehicles equipped with 2.4L Gas Direct Injection (GDI) engines to ensure compliance with emissions regulations.
Associated Products (5)Associated Documents - November 21, 2025•Document ID: 11025892Service Bulletin/Repair InstructionsENGINE
- Mfr Comm. #:
- SC340_TSB_R2
- Date Added:
- December 2, 2025
- Manufacturer:
- KIA
SummaryTECHNICAL SERVICE BULLETIN: VOLUNTARY EMISSIONS SERVICE CAMPAIGN: THETA II 2.4L GDI EMISSIONS ECM LOGIC IMPROVEMENT (SC340) - This bulletin has been revised to include additional information. New/revised sections of this bulletin are indicated by a black bar in the margin area. This bulletin provides information to upgrade the Electronic Control Module ‘ECM’ system software for certain 2016-2022MY vehicles equipped with 2.4L Theta II engines listed in the table below. Kia has become aware that certain 2016-2022MY vehicles equipped with 2.4L Theta II engines may have engine calibrations that were not optimized for emissions standards under certain specific conditions. These calibrations may cause the vehicle to release air pollutants which exceed Federal and California standards. These standards were established to protect your health and welfare from the dangers of air pollution.
Associated Products (14)Associated Documents - November 7, 2025•Document ID: 11025898EmissionsENGINE
- Mfr Comm. #:
- SC340_OWNR_JF102
- Date Added:
- December 2, 2025
- Manufacturer:
- KIA
SummaryVOLUNTARY EMISSIONS SERVICE CAMPAIGN: OWNER NOTIFICATION (SC340 FLIGHT 102 / JF) - This document is the owner notification advising that Kia is conducting a Voluntary Emissions Service Campaign to improve the emissions software logic in the Electronic Control Module (ECM) for certain 2016-2020 MY Optima vehicles equipped with 2.4L Gas Direct Injection (GDI) engines to ensure compliance with emissions regulations.
Associated Products (5)Associated Documents - November 7, 2025•Document ID: 11025859Service Bulletin/Repair InstructionsENGINE
- Mfr Comm. #:
- SC340_TSB_R1
- Date Added:
- December 1, 2025
- Manufacturer:
- KIA
SummaryTECHNICAL SERVICE BULLETIN: VOLUNTARY SERVICE CAMPAIGN: THETA II 2.4L GDI EMISSIONS ECM LOGIC IMPROVEMENT (SC340) - This bulletin has been revised to include additional information. New / revised sections of this bulletin are indicated by a black bar in the margin area. This bulletin provides information to upgrade the Electronic Control Module ‘ECM’ system software for certain 2016-2022MY vehicles equipped with 2.4L Theta II engines listed in the table below. Kia has become aware that certain 2016-2022MY vehicles equipped with 2.4L Theta II engines may have engine calibrations that were not optimized for emissions standards under certain specific conditions. These calibrations may cause the vehicle to release air pollutants which exceed Federal and California standards. These standards were established to protect your health and welfare from the dangers of air pollution.
Associated Products (17)Associated Documents - November 5, 2025•Document ID: 11025889Service Bulletin/Repair InstructionsENGINE
- Mfr Comm. #:
- SC340_TSB
- Date Added:
- December 2, 2025
- Manufacturer:
- KIA
SummaryTECHNICAL SERVICE BULLETIN: VOLUNTARY EMISSIONS SERVICE CAMPAIGN: THETA II 2.4L GDI EMISSIONS ECM LOGIC IMPROVEMENT (SC340) - This bulletin provides information to upgrade the Electronic Control Module ‘ECM’ system software for certain 2016-2022MY vehicles equipped with 2.4L Theta II engines listed in the table below. Kia has become aware that certain 2016-2022MY vehicles equipped with 2.4L Theta II engines may have engine calibrations that were not optimized for emissions standards under certain specific conditions. These calibrations may cause the vehicle to release air pollutants which exceed Federal and California standards. These standards were established to protect your health and welfare from the dangers of air pollution.
Associated Products (17)Associated Documents - October 23, 2025•Document ID: 11024469EmissionsELECTRICAL SYSTEM; ENGINE
- Mfr Comm. #:
- SC340_STKR
- Date Added:
- October 24, 2025
- Manufacturer:
- KIA
SummarySC340_STKR: VOLUNTARY EMISSIONS SERVICE CAMPAIGN COMPLETION LABEL/STICKER
Associated Products (17)Associated Documents - October 23, 2025•Document ID: 11024468EmissionsENGINE; ELECTRICAL SYSTEM
- Mfr Comm. #:
- SC340_QA
- Date Added:
- October 24, 2025
- Manufacturer:
- KIA
SummaryVOLUNTARY EMISSIONS SERVICE CAMPAIGN: QUESTION AND ANSWER (SC340) - This document is the Question and Answer Guide containing the most frequently asked questions regarding the Voluntary Emissions Service Campaign SC340.
Associated Products (16)Associated Documents - October 23, 2025•Document ID: 11024467EmissionsENGINE; ELECTRICAL SYSTEM
- Mfr Comm. #:
- SC340_POC
- Date Added:
- October 24, 2025
- Manufacturer:
- KIA
SummaryVOLUNTARY EMISSIONS SERVICE CAMPAIGN: SC340_POC: PROOF OF CORRECTION CARD
Associated Products (17)Associated Documents - October 23, 2025•Document ID: 11024462EmissionsELECTRICAL SYSTEM; ENGINE
- Mfr Comm. #:
- SC340_DPSM
- Date Added:
- October 24, 2025
- Manufacturer:
- KIA
SummaryVOLUNTARY EMISSIONS SERVICE CAMPAIGN: DEALER PARTS AND SERVICE MANAGER MEMO (SC340) - This document is the announcement to the dealer Parts and Service managers advising that Kia is conducting a Voluntary Emissions Service Campaign to improve the emissions software logic in the Electronic Control Module (ECM) to ensure compliance with emissions regulations in certain 2017-2022 MY Sportage vehicles manufactured from December 10, 2015, through December 7, 2021, certain 2016-2020 MY Optima vehicles manufactured from August 28, 2015, through June 23, 2020, and certain 2016-2020 MY Sorento vehicles manufactured from October 27, 2014, through November 4, 2020, equipped with 2.4L Theta GDI engines.
Associated Products (16)Associated Documents - October 23, 2025•Document ID: 11024445EmissionsENGINE; ELECTRICAL SYSTEM
- Mfr Comm. #:
- SC340_DP
- Date Added:
- October 24, 2025
- Manufacturer:
- KIA
SummaryVOLUNTARY EMISSIONS SERVICE CAMPAIGN: DEALER PRINCIPAL MEMO (SC340) - This document is the announcement to the dealer principals advising that Kia is conducting a Voluntary Emissions Service Campaign to improve the emissions software logic in the Electronic Control Module (ECM) to ensure compliance with emissions regulations in certain 2017-2022 MY Sportage vehicles manufactured from December 10, 2015, through December 7, 2021, certain 2016-2020 MY Optima vehicles manufactured from August 28, 2015, through June 23, 2020, and certain 2016-2020 MY Sorento vehicles manufactured from October 27, 2014, through November 4, 2020, equipped with 2.4L Theta GDI engines.
Associated Products (16)Associated Documents - September 5, 2025•Document ID: 11023108Service Bulletin/Repair InstructionsAIR BAGS
- Mfr Comm. #:
- WTY036_TSB_R1
- Date Added:
- September 12, 2025
- Manufacturer:
- KIA
SummaryTECHNICAL SERVICE BULLETIN: WARRANTY EXTENSION CAMPAIGN: SIDE AIRBAG (SAB) INSPECTION AND REPLACEMENT FOR DTC(S) B1380/B1384 (WTY036) - This bulletin has been revised to include additional information. New/revised sections of this bulletin are indicated by a black bar in the margin area. This bulletin provides information associated with the ‘Warranty Extension Program’ (WTY036) to diagnose and repair certain airbag warning light 'ON' conditions on 2019-2020MY Optima (JFa) vehicles produced from May 21, 2018 through June 23, 2020. The affected vehicles may exhibit an airbag warning light 'ON' with DTC B1380 and/or B1384 due to the front seat Side Airbag (SAB) connector experiencing higher than normal resistance. The warranty coverage for repairs related to the front seat SAB due to illumination of airbag warning light has been extended to 15 years / unlimited miles, starting from the date the vehicle was first put into service.
Associated Products (2)Associated Documents - August 19, 2025•Document ID: 11021983OtherENGINE; ELECTRICAL SYSTEM
- Mfr Comm. #:
- PI2108_OWNR_401
- Date Added:
- August 20, 2025
- Manufacturer:
- KIA
SummaryPRODUCT IMPROVEMENT CAMPAIGN: OWNER RENOTIFICATION (PI2108) - This document is the owner renotification advising that Kia is conducting a Product Improvement Campaign to perform a software update on 2019-2020 MY Kia Optima HEV & PHEV vehicles to protect the engine from excessive connecting rod bearing damage. The update will be done free of charge and will only involve the addition of newly developed computer software for the Engine Control Unit (“ECU”).
Associated Products (2)Associated Documents - July 15, 2025•Document ID: 11020817OtherELECTRICAL SYSTEM; ENGINE
- Mfr Comm. #:
- PI2104_OWNR_401
- Date Added:
- July 23, 2025
- Manufacturer:
- KIA
SummaryPRODUCT IMPROVEMENT CAMPAIGN: OWNER RENOTIFICATION (PI2104) - This document is the owner renotification advising that Kia is conducting a Product Improvement Campaign to perform a software update on 2014-2016 MY Optima Hybrid vehicles equipped with 2.4-liter MPI engines to protect the engine from excessive connecting rod bearing damage. The update will be done free of charge and will only involve the addition of newly developed computer software for the Engine Control Unit (“ECU”).
Associated Products (3)Associated Documents - April 17, 2025•Document ID: 11017172Service Bulletin/Repair InstructionsPOWER TRAIN
- Mfr Comm. #:
- TSB_TRA046_R5
- Date Added:
- April 23, 2025
- Manufacturer:
- KIA
SummaryTECHNICAL SERVICE BULLETIN: TRANSMISSION FLUID APPLICATION GUIDE - This bulletin has been revised to include additional information. New/revised sections of this bulletin are indicated by a black bar in the margin area. This bulletin provides information relating to the correct transmission fluid type and fill quantity requirement for each Kia model. A flush is required ONLY when a transmission is replaced, and the transmission oil cooler is transferred to the new transmission.
Associated Products (165)Associated Documents - April 3, 2025•Document ID: 11017109Service Bulletin/Repair InstructionsENGINE
- Mfr Comm. #:
- TSB_ENG222_R8
- Date Added:
- April 18, 2025
- Manufacturer:
- KIA
SummaryTECHNICAL SERVICE BULLETIN: EXCESSIVE OIL CONSUMPTION NU/GAMMA/THETA/KAPPA ENGINES - This bulletin has been revised to include additional information. New/revised sections of this bulletin are indicated by a black bar in the margin area. This bulletin provides information on diagnosing and/or repairing some 2011-2024MY vehicles (refer to the table on pages 9 and 10 for applicable models and engine), which may exhibit a symptom of excessive oil consumption.
Associated Products (74)Associated Documents - March 25, 2025•Document ID: 11015971Service CampaignELECTRICAL SYSTEM; FUEL/PROPULSION SYSTEM
- Mfr Comm. #:
- SC269_OWNR_301
- Date Added:
- March 26, 2025
- Manufacturer:
- KIA
SummaryVOLUNTARY SERVICE CAMPAIGN: OWNER RENOTIFICATION (SC269) - This document is the owner renotification advising that Kia conducting a Voluntary Service Campaign to inspect and, if necessary, replace the high-voltage fuse in 2013-2016 MY Optima Hybrid vehicles.
Associated Products (4)Associated Documents - March 20, 2025•Document ID: 11015973Service Bulletin/Repair InstructionsELECTRICAL SYSTEM
- Mfr Comm. #:
- TSB_ELE378
- Date Added:
- March 26, 2025
- Manufacturer:
- KIA
SummaryTECHNICAL SERVICE BULLETIN: SERVICE ACTION: KIA CONNECT MODEM RESET (SA611) - This bulletin outlines the procedure for resetting the modem in certain 2016-2025MY Kia vehicles listed on page 3 that are equipped with Kia Connect Services. The affected vehicles may encounter the following issues: remote Start/Climate Control function not working, vehicle Status on the Kia Access App not updating, connected routing not functioning properly.
Associated Products (68)Associated Documents