Kia Optima Service Bulletins (2018)
170 manufacturer communications on file.
- 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 - 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 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 - February 28, 2025•Document ID: 11014912Service Bulletin/Repair InstructionsENGINE
- Mfr Comm. #:
- TSB_ENG222_R7
- Date Added:
- March 4, 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 tables on pages 8-9 for applicable models and engine), which may exhibit a symptom of excessive oil consumption.
Associated Products (74)Associated Documents - October 22, 2024•Document ID: 11009492Service Bulletin/Repair InstructionsVISIBILITY/WIPER
- Mfr Comm. #:
- TSB_CLI057
- Date Added:
- October 30, 2024
- Manufacturer:
- KIA
SummaryTECHNICAL SERVICE BULLETIN: HEATING, VENTILATION, AND AIR CONDITIONING (HVAC) BLOWER MOTOR FUSE RELOCATION - This bulletin provides the procedure to relocate the Heating, Ventilation, and Air Conditioning (HVAC) blower motor 40-ampere fuse on some 2016-2020MY Optima (JFa) vehicles produced from August 28, 2015 through June 23, 2020 which may experience an inoperative blower motor due to a blown multi-fuse at position #3. The HVAC system provides cooling and heating to help maintain a comfortable environment inside the vehicle cabin. The blower motor provides primary airflow for the HVAC system. Extended use of the HVAC system at high fan speeds may cause damage to the multi-fuse terminals for the HVAC blower motor circuit, which can cause the blower motor to become inoperative, resulting in reduced heat and air conditioning.
Associated Products (5)Associated Documents - June 5, 2024•Document ID: 11001594Service Bulletin/Repair InstructionsELECTRICAL SYSTEM
- Mfr Comm. #:
- CS2303_TSB_R4
- Date Added:
- June 13, 2024
- Manufacturer:
- KIA
SummaryTECHNICAL SERVICE BULLETIN: CUSTOMER SATISFACTION: ANTI-THEFT S/W LOGIC UPGRADE & DECAL INSTALLATION (CS2303) - 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 the procedure to upgrade the software logic of the Integrated Body Control Unit (IBU) or Body Control Module (BCM) system on certain 2011-2015MY Optima (TF), 2012-2015MY Optima (QF) and 2016-2020MY Optima (JF, JFa) vehicles produced within the dates outlined on page 10, which may not be equipped with an immobilizer. This logic upgrade will add anti-theft ignition start logic to the vehicle's system operation which activates when the vehicle is locked with the use of the key fob.
Associated Products (10)Associated Documents - May 16, 2024•Document ID: 11000787Service Bulletin/Repair InstructionsPOWER TRAIN
- Mfr Comm. #:
- TSB_TRA046_R4
- Date Added:
- June 4, 2024
- Manufacturer:
- KIA
SummaryThis 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.
Associated Products (165)Associated Documents - March 22, 2024•Document ID: 10252085Service Bulletin/Repair InstructionsELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING
- Mfr Comm. #:
- PI1802YZ_TSB_R7
- Date Added:
- April 3, 2024
- Manufacturer:
- KIA
SummaryTECHNICAL SERVICE BULLETIN: PRODUCT IMPROVEMENT CAMPAIGN: ENGINE REPLACEMENT INSTRUCTIONS FOR DTC P1326 (PI1802Y/Z) - 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 related to the Technical Service Bulletin previously published PI1802 titled "Knock Sensor Detection System - ECU Logic Improvement"; equipped w/THETA II engine. Specifically, this bulletin provides instructions on which procedures to follow if, after installation of the KSDS, any one of the subject vehicles below returns to the dealer with Diagnostic Trouble Code (DTC) P1326 (Knock Signal Range/Performance).
Associated Products (14)Associated Documents - September 7, 2023•Document ID: 10242234Service Bulletin/Repair InstructionsENGINE AND ENGINE COOLING
- Mfr Comm. #:
- SC218YZ_TSB
- Date Added:
- October 1, 2023
- Manufacturer:
- KIA
SummarySUBSEQUENT REPAIR ACTION: ENGINE REPLACEMENT INSTRUCTIONS FOR DTC P1326 (SC218YZ) - This bulletin provides information related to the Technical Service Bulletin previously published (SC218) titled "Engine Inspection/Replacement and KSDS S/W Installation." Specifically, this bulletin provides instructions on which procedures to follow if, after installation of the KSDS, any one of the subject vehicles return to the dealer with Diagnostic Trouble Code (DTC) P1326 (Knock Signal Range/Performance).
Associated Products (2)Associated Documents - August 7, 2023•Document ID: 10240563Service Bulletin/Repair InstructionsELECTRICAL SYSTEM; ELECTRICAL SYSTEM:IGNITION:ANTI-THEFT:CONTROL MODULE
- Mfr Comm. #:
- CS2310_TSB_R1
- Date Added:
- August 24, 2023
- Manufacturer:
- KIA
SummaryTECHNICAL SERVICE BULLETIN: CUSTOMER SATISFACTION: KIA GENUINE REMOTE START CONTROL MODULE UPGRADE FOR ANTI-THEFT LOGIC COMPATIBILITY (CS2310) - 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 update the software logic in the Kia Genuine Remote Start Control Module on certain 2012-2022MY model vehicles listed on page 7. Vehicles equipped with a Kia Genuine Remote Start feature and have had the Anti-Theft software logic (CS230*) applied to the Integrated Body Control Unit (IBU) or Body Control Module (BCM) may experience five (5) inadvertent honks after starting the vehicle with the remote start feature.
Associated Products (46)Associated Documents - July 31, 2023•Document ID: 10240263Service Bulletin/Repair InstructionsELECTRICAL SYSTEM
- Mfr Comm. #:
- CS2303D_OWNR2
- Date Added:
- August 2, 2023
- Manufacturer:
- KIA
SummaryCUSTOMER SATISFACTION CAMPAIGN: OWNER RE-NOTIFICATION - This document is the owner re-notification advising that Kia has developed a software upgrade that can be installed on the vehicle to restrict the operation of the vehicle's ignition system should a locked vehicle be the subject of a break-in and theft attempt without the key. This software upgrade will be available to the customer free of charge for eighteen (18) months from the date of the original letter. When the software upgrade is complete, Kia will also provide the customer with window stickers that can be applied to the vehicle to discourage a break-in.
Associated Products (3)Associated Documents - July 31, 2023•Document ID: 10240262Service Bulletin/Repair InstructionsELECTRICAL SYSTEM
- Mfr Comm. #:
- CS2303C_OWNR2
- Date Added:
- August 2, 2023
- Manufacturer:
- KIA
SummaryCUSTOMER SATISFACTION CAMPAIGN: OWNER RE-NOTIFICATION - This document is the owner re-notification advising that Kia has developed a software upgrade that can be installed on the vehicle to restrict the operation of the vehicle's ignition system should a locked vehicle be the subject of a break-in and theft attempt without the key. This software upgrade will be available to the customer free of charge for eighteen (18) months from the date of the original letter. When the software upgrade is complete, Kia will also provide the customer with window stickers that can be applied to the vehicle to discourage a break-in.
Associated Products (5)Associated Documents - July 13, 2023•Document ID: 10239713Service Bulletin/Repair InstructionsELECTRICAL SYSTEM:IGNITION:ANTI-THEFT:CONTROL MODULE; ELECTRICAL SYSTEM
- Mfr Comm. #:
- CS2303_TSB_R3
- Date Added:
- August 2, 2023
- Manufacturer:
- KIA
SummaryTECHNICAL SERVICE BULLETIN: CUSTOMER SATISFACTION: ANTI-THEFT S/W LOGIC UPGRADE & DECAL INSTALLATION (CS2303) - 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 the procedure to upgrade the software logic of the Integrated Body Control Unit (IBU) or Body Control Module (BCM) system on certain 2011-2015MY Optima (TF), 2012-2015MY Optima (QF) and 2016-2020MY Optima (JF, JFa) vehicles produced within the dates outlined on page 10, which may not be equipped with an immobilizer. This logic upgrade will add anti-theft ignition start logic to the vehicle's system operation which activates when the vehicle is locked.
Associated Products (10)Associated Documents - July 6, 2023•Document ID: 10239108Service Bulletin/Repair InstructionsELECTRICAL SYSTEM
- Mfr Comm. #:
- CS2310_TSB
- Date Added:
- August 2, 2023
- Manufacturer:
- KIA
SummaryTECHNICAL SERVICE BULLETIN CUSTOMER SATISFACTION: KIA GENUINE REMOTE START CONTROL MODULE UPGRADE FOR ANTI-THEFT LOGIC COMPATIBILITY (CS2310) - This bulletin provides information to update the software logic in the Kia Genuine Remote Start Control Module on certain 2012-2022MY model vehicles listed on page 6. Vehicles equipped with a Kia Genuine Remote Start feature and have had the Anti-Theft software logic (CS230*) applied to the Integrated Body Control Unit (IBU) or Body Control Module (BCM) may experience five (5) inadvertent honks after starting the vehicle with the remote start feature.
Associated Products (48)2022 Kia Forte2022 Kia K52022 Kia Seltos2022 Kia Sorento2022 Kia Soul2022 Kia Sportage2021 Kia Forte2021 Kia K52021 Kia Sedona2021 Kia Seltos2021 Kia Sorento2021 Kia Soul2021 Kia Sportage2020 Kia Forte2020 Kia Optima2020 Kia Sedona2020 Kia Sorento2020 Kia Soul2020 Kia Sportage2019 Kia Forte+ 28 moreAssociated Documents - June 26, 2023•Document ID: 10238225Service Bulletin/Repair InstructionsELECTRICAL SYSTEM; VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM:COMPRESSOR; VISIBILITY
- Mfr Comm. #:
- TSB_CLI049_R1
- Date Added:
- July 5, 2023
- Manufacturer:
- KIA
SummaryTECHNICAL SERVICE BULLETIN: PARTIAL REPAIR - ELECTRICAL A/C COMPRESSOR - 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 regarding partial repair of the Air Conditioning (A/C) compressor assembly on some 2011MY~ Optima Hybrid (TF HEV, JF HEV/PHEV), 2015MY~ Soul EV (PS EV), 2017MY~ Niro (DE HEV/PHEV/EV), 2022MY~ EV6 (CV), 2021MY~ Sorento (MQ4 HEV/PHEV), 2023MY~ Sportage (NQ5 HEV/PHEV), and 2023MY~ Niro (SG2 EV/HEV/PHEV) vehicles.
Associated Products (29)Associated Documents - May 22, 2023•Document ID: 10236643Service Bulletin/Repair InstructionsELECTRICAL SYSTEM
- Mfr Comm. #:
- CS2303_TSB_R2
- Date Added:
- May 30, 2023
- Manufacturer:
- KIA
SummaryTECHNICAL SERVICE BULLETIN: CUSTOMER SATISFACTION: ANTI-THEFT S/W LOGIC UPGRADE & DECAL INSTALLATION (CS2303) - 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 the procedure to upgrade the software logic of the Integrated Body Control Unit (IBU) or Body Control Module (BCM) system on certain 2011-2015MY Optima (TF), 2012-2015MY Optima (QF) and 2016-2020MY Optima (JF, JFa) vehicles produced within the dates outlined on page 10, which may not be equipped with an immobilizer. This logic upgrade will add anti-theft ignition start logic to the vehicle's system operation which activates when the vehicle is locked.
Associated Products (10)Associated Documents - March 16, 2023•Document ID: 10233306Service Bulletin/Repair InstructionsELECTRICAL SYSTEM; BACK OVER PREVENTION:SOFTWARE
- Mfr Comm. #:
- CS2303D_OWNR
- Date Added:
- April 6, 2023
- Manufacturer:
- KIA
SummaryCUSTOMER SATISFACTION CAMPAIGN: OWNER NOTIFICATION - This document is the owner notification advising that Kia has developed a software upgrade that can be installed on the vehicle to restrict the operation of the vehicle's ignition system should a locked vehicle be the subject of a break-in and theft attempt without the key. This software upgrade will be available to the customer free of charge for eighteen (18) months from the date of this letter. When the software upgrade is complete, Kia will also provide the customer with window stickers that can be applied to your vehicle to discourage a break-in.
Associated Products (8)Associated Documents - March 10, 2023•Document ID: 10232943Service Bulletin/Repair InstructionsELECTRICAL SYSTEM
- Mfr Comm. #:
- CS2303_TSB_R1
- Date Added:
- April 6, 2023
- Manufacturer:
- KIA
SummaryTECHNICAL SERVICE BULLETIN: CUSTOMER SATISFACTION: ANTI-THEFT S/W LOGIC UPGRADE & DECAL INSTALLATION (CS2303) - 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 the procedure to upgrade the software logic of the Integrated Body Control Unit (IBU) or Body Control Module (BCM) system on certain 2011-2015MY Optima (TF), 2012-2015MY Optima (QF) and 2016-2020MY Optima (JF, JFa) vehicles produced within the dates outlined on page 10, which may not be equipped with an immobilizer. This logic upgrade will add anti-theft ignition start logic to the vehicle's system operation.
Associated Products (10)Associated Documents - February 24, 2023•Document ID: 10232178Service Bulletin/Repair InstructionsELECTRICAL SYSTEM; ELECTRICAL SYSTEM:IGNITION
- Mfr Comm. #:
- CS2303C_OWNR
- Date Added:
- March 6, 2023
- Manufacturer:
- KIA
SummaryCUSTOMER SATISFACTION CAMPAIGN: OWNER NOTIFICATION - This document is the owner notification advising that Kia has developed a software upgrade that can be installed on the vehicle to restrict the operation of the vehicle's ignition system should a locked vehicle be the subject of a break-in and theft attempt without the key. This software upgrade will be available to the customer free of charge for eighteen (18) months from the date of this letter. When the software upgrade is complete, Kia will also provide the customer with window stickers that can be applied to your vehicle to discourage a break-in.
Associated Products (5)Associated Documents