# Service bulletins for the 2016 Kia Sorento

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

275 bulletins from NHTSA, as of 2026-10-19.

- [SC330\_OWNR\_301](/bulletins/11037563.md), 2026-09-30, Service campaign: EXTERIOR LIGHTING; ELECTRICAL SYSTEM. VOLUNTARY SERVICE CAMPAIGN: OWNER RENOTIFICATION \(SC330 Flight 301\) \- This document is the owner renotification advising that Kia is conducting a Voluntary Service Campaign to replace the multi\-function switch knob with improved parts on certain 2016\-2018 MY Sorento vehicles.
- [CS2312\_TSB\_R2](/bulletins/11034003.md), 2026-06-18, Service bulletin: STRUCTURE:BODY. TECHNICAL SERVICE BULLETIN: CUSTOMER SATISFACTION: THEFT DETERRENT IGNITION CYLINDER PROTECTOR AND DECAL INSTALLATION \(CS2312\) \- 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 install a Theft Deterrent Ignition Cylinder Protector on certain 2010\-2022MY Kia vehicles outlined on page 20, which may not have been equipped with an immobilizer and whose Integrated Body Control Unit \(IBU\) / Body Control Module \(BCM\) did receive the Anti\-Theft Software Logic upgrade under CS2301/02/03/04/05/06/07/08/09 TSBs. In an effort to help prevent thefts of Kia vehicles, a protective cover will be permanently affixed to the ignition cylinder. This Theft Deterrent Ignition Cylinder Protector prevents the removal of the key lock cylinder thereby preventing access to the ignition tumbler.
- [WTY031\_TSB\_R2](/bulletins/11033996.md), 2026-06-18, Warranty extension: EXTERIOR LIGHTING; ELECTRICAL SYSTEM; VISIBILITY/WIPER. TECHNICAL SERVICE BULLETIN: WARRANTY EXTENSION CAMPAIGN: MULTIFUNCTION SWITCH REPAIR \(WTY031\) \- 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 ‘Multifunction Switch Warranty Extension Program’ \(WTY031\) to repair the multifunction switch knob on 2016\-2018MY Sorento \(UMa\) vehicles, produced at Kia Georgia from October 27, 2014 through March 7, 2018, which may exhibit an intermittent headlamp flickering. The vehicle’s warranty for this issue will be extended from 5 years/60,000 miles to 15 years/150,000 miles, whichever comes first, starting from the date the vehicle was first put into service.
- [SC340\_TSB\_R5](/bulletins/11031854.md), 2026-05-01, Emissions: ENGINE. VOLUNTARY EMISSIONS SERVICE CAMPAIGN: THETA II 2.4L GDI EMISSIONS: ECM LOGIC IMPROVEMENT \(SC340 REVISION 5\) \- 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\-2020MY Optima, 2016\-2020MY Sorento, 2017\-2022MY Sportage 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.
- [WTY026\_TSB\_R2](/bulletins/11030382.md), 2026-04-01, Service bulletin: ENGINE. TECHNICAL SERVICE BULLETIN: WARRANTY EXTENSION CAMPAIGN: OIL PRESSURE SWITCH \(OPS\) REPLACEMENT \(WTY026 REVISION 2\) \- 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 the replacement of the Oil Pressure Switch associated with the ‘Warranty Extension Program’ \(WTY026\) on some 2014\-2018MY vehicles listed in the table below, for repairs that may be necessary to address an Oil Pressure Switch leak in the eligible vehicles listed below from 10 years/100,000 miles to 15 years/150,000 miles, whichever comes first, starting from the date the vehicle was first put into service. This warranty extension is to address the Oil Pressure Switch leaking condition at no cost to the customers during this extended warranty period.
- [SC340\_TSB\_R4](/bulletins/11029979.md), 2026-03-13, Emissions: ELECTRICAL SYSTEM; ENGINE. TECHNICAL SERVICE BULLETIN: VOLUNTARY EMISSIONS SERVICE CAMPAIGN: THETA II 2.4L GDI EMISSION SECM LOGIC IMPROVEMENT \(SC340 REV 4\) \- 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.
- [TSB\_CS2312\_R1](/bulletins/11028908.md), 2026-02-19, Service bulletin: STRUCTURE:BODY. TECHNICAL SERVICE BULLETIN: CUSTOMER SATISFACTION: THEFT DETERRENT IGNITION CYLINDER PROTECTOR AND DECAL INSTALLATION \(CS2312\) \- 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 install a Theft Deterrent Ignition Cylinder Protector on certain 2010\-2022MY Kia vehicles outlined on page 20, which may not have been equipped with an immobilizer and whole Integrated Body control Unit \(IBU\) / Body Control Module \(BCM\) did receive the Ant\-Theft Software Logic upgrade under CS2301/02/03/04/05/06/07/08/09 TSBs. In an effort to help prevent thefts of Kia vehicles, a protective cover will be permanently affixed to the ignition cylinder. This Theft Deterrent Ignition Cylinder Protector prevents the removal of the key lock cylinder thereby preventing access to the ignition tumbler.
- [CS2312\_OWNR](/bulletins/11026980.md), 2026-01-05, Other: STRUCTURE:BODY. CUSTOMER 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. \(Mailing of these notifications to vehicle owners will be completed from December 17, 2025 through February 27, 2026\)
- [SC340\_OWNR\_UM103](/bulletins/11026900.md), 2026-01-03, Emissions: ENGINE. VOLUNTARY EMISSIONS SERVICE CAMPAIGN: OWNER NOTIFICATION \(SC340 FLIGHT 103 / UM\) \- 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 Sorento vehicles equipped with 2.4L Gas Direct Injection \(GDI\) engines to ensure compliance with emissions regulations.
- [TSB\_CS2312](/bulletins/11026825.md), 2025-12-24, Service bulletin: STRUCTURE:BODY. TECHNICAL SERVICE BULLETIN: CUSTOMER SATISFACTION: THEFT DETERRENT IGNITION CYLINDER PROTECTOR AND DECAL INSTALLATION \(CS2312\) \- This bulletin provides information to install a Theft Deterrent Ignition Cylinder Protector on certain 2010\-2022MY Kia vehicles outlined on page 19, which may not have been equipped with an immobilizer and whose Integrated Body Control Unit \(IBU\) / Body Control Module \(BCM\) did receive the Anti\-Theft Software Logic upgrade under CS2301/02/03/04/05/06/07/08/09 TSBs. In an effort to help prevent thefts of Kia vehicles, a protective cover will be permanently affixed to the ignition cylinder. This Theft Deterrent Ignition Cylinder Protector prevents the removal of the key lock cylinder thereby preventing access to the ignition tumbler.
- [PS797](/bulletins/11026698.md), 2025-12-18, Other: BACK OVER PREVENTION: WARNINGS. PITSTOP: 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. \(Please note that this Pitstop only applies to models/trims that are equipped with the ultrasonic sensors.\)
- [SC340\_OWNR\_UM101](/bulletins/11025894.md), 2025-12-02, Emissions: ENGINE. VOLUNTARY EMISSIONS SERVICE CAMPAIGN: OWNER NOTIFICATION \(SC340 FLIGHT 101 / UM\) \- 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 Sorento vehicles equipped with 2.4L Gas Direct Injection \(GDI\) engines to ensure compliance with emissions regulations.
- [SC340\_TSB\_R2](/bulletins/11025892.md), 2025-12-02, Service bulletin: ENGINE. TECHNICAL 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.
- [SC340\_TSB](/bulletins/11025889.md), 2025-12-02, Service bulletin: ENGINE. TECHNICAL 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.
- [SC340\_TSB\_R1](/bulletins/11025859.md), 2025-12-01, Service bulletin: ENGINE. TECHNICAL 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.
- [SC340\_STKR](/bulletins/11024469.md), 2025-10-24, Emissions: ELECTRICAL SYSTEM; ENGINE. SC340\_STKR: VOLUNTARY EMISSIONS SERVICE CAMPAIGN COMPLETION LABEL/STICKER
- [SC340\_QA](/bulletins/11024468.md), 2025-10-24, Emissions: ELECTRICAL SYSTEM; ENGINE. VOLUNTARY 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.
- [SC340\_POC](/bulletins/11024467.md), 2025-10-24, Emissions: ENGINE; ELECTRICAL SYSTEM. VOLUNTARY EMISSIONS SERVICE CAMPAIGN: SC340\_POC: PROOF OF CORRECTION CARD
- [SC340\_DPSM](/bulletins/11024462.md), 2025-10-24, Emissions: ENGINE; ELECTRICAL SYSTEM. VOLUNTARY 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.
- [SC340\_DP](/bulletins/11024445.md), 2025-10-24, Emissions: ENGINE; ELECTRICAL SYSTEM. VOLUNTARY 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.
- [WTY035\_TSB\_R3](/bulletins/11024184.md), 2025-10-09, Warranty extension: ENGINE. TECHNICAL SERVICE BULLETIN: ENGINE SUB ASSEMBLY INSPECTION/REPLACEMENT \(WTY035\) \- This bulletin has been revised to include additional information. New/revised sections of this bulletin are indicated by a black bar in the left or right margin areas.
- [SC330\_OWNR\_201](/bulletins/11023265.md), 2025-09-22, Service campaign: ELECTRICAL SYSTEM. VOLUNTARY SERVICE CAMPAIGN: OWNER RENOTIFICATION \(SC330\) \- This document is the owner renotification advising that Kia is conducting a Voluntary Service Campaign to replace the multi\-function switch knob with improved parts on certain 2016\-2018 MY Sorento vehicles.
- [TSB\_TRA046\_R5](/bulletins/11017172.md), 2025-04-23, Service bulletin: POWER TRAIN. TECHNICAL 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.
- [TSB\_ENG222\_R8](/bulletins/11017109.md), 2025-04-18, Service bulletin: ENGINE. TECHNICAL 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.
- [TSB\_ENG222\_R7](/bulletins/11014912.md), 2025-03-04, Service bulletin: ENGINE. TECHNICAL 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.

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