Technical service bulletins are instructions a manufacturer sent its dealers about a known fault. They are not recalls and the work is usually not free, but they are the clearest signal of a problem the manufacturer already knows about.
TSB_CLI049_R2
Service Bulletin/Repair Instructions
TECHNICAL 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 the 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.
SC373A_OWNR
Service Campaign
VOLUNTARY SERVICE CAMPAIGN: OWNER NOTIFICATION (SC373A) - This document is the owner notification advising that Kia is conducting a Voluntary Service Campaign on certain 2024-2026 MY EV6 vehicles to replace the 3-way coolant valve assembly with a new one. In addition, dealers will inspect the 3-way coolant valve harness connector for corrosion and, if necessary, replace the harness connector.
SC373_TSB
Service Bulletin/Repair Instructions
TECHNICAL SERVICE BULLETIN: VOLUNTARY SERVICE CAMPAIGN: 3-WAY COOLANT VALVE REPLACEMENT (SC373) - This bulletin provides information to replace the 3-way coolant valve. In addition, inspect the 3-way coolant valve harness connector for corrosion, and if necessary, replace the harness connector on certain 2024-2026MY EV6 (CV, CVa) vehicles produced from August 07, 2023 through June 18, 2026. The 3-way coolant valve in the subject vehicles may become damaged and result in a coolant leak. As a result, corrosion may also be present in the 3-way coolant valve harness connector. An inoperative 3-way coolant valve or corrosion within the harness connector may result in reduced Heating, Ventilation, and Air Conditioning (HVAC) performance and/or in the illumination of the “Check electric vehicle system” or “Refill Coolant” warning messages in the instrument cluster.
SC373_DP
Service Campaign
VOLUNTARY SERVICE CAMPAIGN: DEALER PRINCIPAL MEMO (SC373) - This document is the announcement to the dealer principals advising that Kia is conducting a Voluntary Service Campaign on certain 2024-2026 MY EV6 vehicles, manufactured from August 7, 2023 through June 18, 2026, to replace the 3-way coolant valve assembly with a new one. In addition, dealers will inspect the 3-way coolant valve harness connector for corrosion and, if necessary, replace the harness connector.
SC373_DPSM
Service Campaign
VOLUNTARY SERVICE CAMPAIGN:DEALER PARTS AND SERVICE MANAGER MEMO (SC373) - This document is the announcement to the dealer Parts and Service managers advising that Kia is conducting a Voluntary Service Campaign on certain 2024-2026 MY EV6 vehicles, manufactured from August 7, 2023 through June 18, 2026, to replace the 3-way coolant valve assembly with a new one. In addition, dealers will inspect the 3-way coolant valve harness connector for corrosion and, if necessary, replace the harness connector.
SC373_QA
Service Campaign
VOLUNTARY SERVICE CAMPAIGN: QUESTION AND ANSWER (SC373) - This document is the Question and Answer Guide containing the most frequently asked questions regarding the Voluntary Service Campaign SC373.
TSB_BOD336
Service Bulletin/Repair Instructions
TECHNICAL SERVICE BULLETIN: KEY AND CYLINDER SET REPLACEMENT - This bulletin provides information to replace the driver’s door lock and trunk lid key cylinders on some 2019-2024MY Kia vehicles listed below. On affected vehicles, the stored key code may not correspond to the mechanical key profile, which can result in incorrect key cutting when the original key is lost or damaged.
TSB_ELE422
Service Bulletin/Repair Instructions
TECHNICAL SERVICE BULLETIN: INFOTAINMENT SYSTEM SOFTWARE UPDATE USING UPDATE.KIA.COM - This bulletin provides information and service procedures for updating the infotainment systems on applicable Kia vehicles using the Kia Navigation Updater available at update.kia.com. The software update may improve system performance, enhance existing features, and apply the latest operating software for supported vehicles (2021-2026MY All Models).
WTY044_TSB
Service Bulletin/Repair Instructions
WARRANTY EXTENSION CAMPAIGN: TECHNICAL SERVICE BULLETIN: ICCU INSPECTION/REPLACEMENT (WTY044) - This bulletin provides information associated with the ‘Warranty Extension Program’ (WTY044) to inspect and, if necessary, replace the Integrated Charging Control Unit (ICCU) and/or the ICCU Fuse on 2022-2024MY EV6 (CV1) vehicles produced from November 17, 2021 through July 22, 2024. The affected vehicles may exhibit difficulty or inability to charge the subject vehicles using Level 1 or Level 2 AC charging and/or inability to use the Vehicle-to-Load (V2L) function, and/or display of the “Check electric vehicle system” warning message. The warranty coverage for repairs related to the ICCU with above symptoms will be extended from 10 years / 100,000 miles to 15 years / 180,000 miles, whichever comes first, starting from the date the vehicle was first put into service.
WTY044_OWNR
Warranty Program/Extension
WARRANTY EXTENSION CAMPAIGN: OWNER NOTIFICATION (WTY044) - This document is the owner notification advising that Kia is extending the New Vehicle Limited Warranty coverage to all owners for certain repairs related to the Integrated Charging Control Unit (ICCU) in 2022-2024 MY EV6 vehicles from 10 years / 100,000 miles to 15 years / 180,000 miles, whichever comes first, starting from the date the vehicle was first put into service. This warranty extension is to address concerns involving the ICCU, which may result in the difficulty or inability to charge your vehicle using Level 1 or Level 2 AC charging and/or inability to use the Vehicle-to-Load (V2L) function to supply AC electric power to external electronic products.
WTY044_QA
Warranty Program/Extension
WARRANTY EXTENSION CAMPAIGN: QUESTION AND ANSWER (WTY044) - This document is the Question and Answer Guide containing the most frequently asked questions regarding the Warranty Extension Campaign WTY044.
WTY044_DP
Warranty Program/Extension
WARRANTY EXTENSION CAMPAIGN: DEALER PRINCIPAL MEMO (WTY044) - This document is the announcement to the dealer principals advising that Kia is extending the New Vehicle Limited Warranty coverage to all owners for certain repairs related to the Integrated Charging Control Unit (ICCU) in 2022-2024 MY EV6 vehicles manufactured from November 17, 2021 through July 22, 2024, from 10 years / 100,000 miles to 15 years / 180,000 miles, whichever comes first, starting from the date the vehicle was first put into service. This warranty extension is to address concerns involving the ICCU, which may result in the difficulty or inability to charge the subject vehicles using Level 1 or Level 2 AC charging and/or inability to use the Vehicle-to-Load (V2L) function to supply AC electric power to external electronic products.
WTY044_DPSM
Warranty Program/Extension
WARRANTY EXTENSION CAMPAIGN: DEALER PARTS AND SERVICE MANAGER MEMO (WTY044) - This document is the announcement to the dealer Parts and Service managers advising that Kia is extending the New Vehicle Limited Warranty coverage to all owners for certain repairs related to the Integrated Charging Control Unit (ICCU) in 2022-2024 MY EV6 vehicles manufactured from November 17, 2021 through July 22, 2024, from 10 years / 100,000 miles to 15 years / 180,000 miles, whichever comes first, starting from the date the vehicle was first put into service. This warranty extension is to address concerns involving the ICCU, which may result in the difficulty or inability to charge the subject vehicles using Level 1 or Level 2 AC charging and/or inability to use the Vehicle-to-Load (V2L) function to supply AC electric power to external electronic products.
WTY044_REIMB
Warranty Program/Extension
WARRANTY EXTENSION CAMPAIGN: REIMBURSEMENT FORM (WTY044) - This document is a Reimbursement Request form that was mailed with the customer letter advising them to submit the form if they had paid for repairs for this same matter prior to the warranty extension campaign program launch.
TSB_ELE417
Service Bulletin/Repair Instructions
TECHNICAL SERVICE BULLETIN: INFOTAINMENT SOFTWARE UPDATE PROCEDURE - This bulletin provides information on the process for downloading infotainment software updates and preparing USB for installation on applicable Kia vehicles. The software downloads and USB preparation process is similar across all supported platforms; however, in‑vehicle installation procedures vary by head unit type.
SC327Y_TSB_R1
Service Bulletin/Repair Instructions
TECHNICAL SERVICE BULLETIN: SUBSEQUENT REPAIR ACTION: ICCU AND FUSE REPLACEMENT (SC327Y) - This bulletin provides information related to the Technical Service Bulletin previously published under SC327, titled “ICCU and Fuse Inspection/Replacement and ICCU Software Upgrade.” If DTC P1A9096 is present or stored after ICCU Software Upgrade has been performed per SC327, follow the instructions in this bulletin to replace the ICCU and ICCU fuse.
PS797
Other
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.)
TSB_GEN099_R3
Service Bulletin/Repair Instructions
TECHNICAL SERVICE BULLETIN: SERVICE ACTION: TIRE MOBILITY KIT INSPECTION & REPLACEMENT/ REPAIR (SA556) - 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 inspect, and if necessary, replace the Tire Mobility Kit (TMK) sealant can or sealant can cap on certain 2023-2024MY Kia vehicles listed on page 5. Lower ambient temperatures can create a vacuum effect inside the TMK sealant can, causing the sealant can cap to open, resulting in the tire sealant leaking.
SC345Z_TSB
Service Bulletin/Repair Instructions
TECHNICAL SERVICE BULLETIN: SUBSEQUENT REPAIR ACTION: FRONT MOTOR REDUCTION GEAR ASSEMBLY REPLACEMENT (SC345Z) - This bulletin provides information regarding grinding or whining noise coming from the front motor reduction gear assembly after replacing the oil under SC345 (published in August 2025) on certain 2023-2024MY Niro EV (SG2 EV) vehicles produced from December 12, 2022 through February 7, 2024 and EV6 (CV) vehicles produced from December 14, 2022 through February 22, 2024. In rare cases, the front motor reduction gear assembly may exhibit noise after having the oil replaced.
PS791
Other
PITSTOP: TECHNICAL OPERATIONS: DCU IDENTIFICATION AND DAIGNOSTIC AID - This Pitstop provides information on identifying the Data Connectivity Unit (DCU) in Kia vehicles equipped with Connected Car Navigation Cockpit (ccNC) and ccNC Lite head units, as well as a diagnostic aid when diagnosing Kia Connect concerns. When diagnosing non-operational Kia Connect concerns, under no circumstance should the DCU be swapped with a known good DCU from another vehicle. Doing so may result in inoperative Kia Connect services on either vehicle and may require the replacement of the known good DCU. If a DCU needs to be replaced, the recommendation is to always order a replacement unit (with the correct P/N) to ensure proper Kia Connect services operations using the newly installed/replaced DCU.
SC345_OWNR_CV
Service Campaign
VOLUNTARY SERVICE CAMPAIGN: OWNER NOTIFICATION (SC345) - This document is the owner notification advising that Kia is conducting a Voluntary Service Campaign to replace the gear oil in the front motor and gear reduction assembly, and fill it to the factory-specified amount in certain 2023-2024MY EV6 vehicles, manufactured from December 14, 2022 through February 22, 2024.
SC345_DP
Service Campaign
VOLUNTARY SERVICE CAMPAIGN: DEALER PRINCIPAL MEMO (SC345) - This document is the announcement to the dealer principals advising that Kia is conducting a Voluntary Service Campaign to replace the gear oil in the front motor and gear reduction assembly, and fill it to the factory-specified amount in certain 2023-2024MY EV6 vehicles, manufactured from December 14, 2022 through February 22, 2024 and Niro EV vehicles, manufactured from December 12, 2022 through February 7, 2024.
SC345_DPSM
Service Campaign
VOLUNTARY SERVICE CAMPAIGN: DEALER PARTS AND SERVICE MANAGER MEMO (SC345) - This document is the announcement to the dealer Parts and Service managers advising that Kia is conducting a Voluntary Service Campaign to replace the gear oil in the front motor and gear reduction assembly, and fill it to the factory-specified amount in certain 2023-2024MY EV6 vehicles, manufactured from December 14, 2022 through February 22, 2024 and Niro EV vehicles, manufactured from December 12, 2022 through February 7, 2024.
SC345_QA
Service Campaign
VOLUNTARY SERVICE CAMPAIGN: QUESTION AND ANSWER (SC345) - This document is the Question and Answer Guide containing the most frequently asked questions regarding the Voluntary Service Campaign SC.
SC345_TSB
Service Bulletin/Repair Instructions
TECHNICAL SERVICE BULLETIN: VOLUNTARY SERVICE CAMPAIGN FRONT MOTOR REDUCTION GEAR OIL REPLACEMENT (SC345) - This bulletin provides information to replace the front motor reduction gear assembly gear oil on certain 2023-2024MY Niro EV (SG2 EV) vehicles produced from December 12, 2022 through February 7, 2024 and EV6 (CV) vehicles produced from December 14, 2022 through February 22, 2024. During the production of the subject vehicles, the amount of gear oil in the front motor and reduction gear assembly may have been filled below factory specification. If the gear oil level is lower than Kia’s factory specifications, the subject vehicles may eventually produce a grinding noise or whining noise from the front of the vehicle while driving.
TSB_ELE388_R1
Service Bulletin/Repair Instructions
TECHNICAL SERVICE BULLETIN: SERVICE ACTON: WPC DISCHARGE LOGIC IMPROVEMENT (SA618) - 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 instructions for updating the Wireless Power Charging ‘WPC’ system software on certain 2024MY EV9 (MV1) vehicles produced from February 9, 2023, through October 10, 2024. The affected vehicles may experience the 12V battery drained while the vehicle is parked due to the wireless charging unit remaining temporarily active, potentially resulting in low battery voltage and no-start condition.
TSB_TRA046_R5
Service Bulletin/Repair Instructions
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_ELE378
Service Bulletin/Repair Instructions
TECHNICAL 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.
TSB_ELE367
Service Bulletin/Repair Instructions
TECHNICAL SERVICE BULLETIN: SERVICE ACTION: LIMP-HOME MODE OPERATION LOGIC IMPROVEMENT (SA599) - This bulletin provides information to upgrade the Vehicle Control Unit (VCU) software on certain 2022-2024MY EV6 (CV) vehicles produced from November 17, 2021, through July 18, 2024, which are equipped with a limp-home mode function that activates in response to a fault detected in the Low-Voltage DC-DC Converter (LDC).
SC302Y_TSB_CLSD
Service Bulletin/Repair Instructions
This bulletin was closed and superseded by SC327Y TSB. "This bulletin provides information related to the Technical Service Bulletin previously published under SC302, titled “ICCU and Fuse Inspection/Replacement and ICCU Software Upgrade.” If DTC P1A9096 is present or stored after ICCU Software Upgrade has been performed per SC302."
SC327Y_TSB
Service Bulletin/Repair Instructions
This bulletin provides information related to the Technical Service Bulletin previously published under SC327, titled “ICCU and Fuse Inspection/Replacement and ICCU Software Upgrade.” If DTC P1A9096 is present or stored after ICCU Software Upgrade has been performed per SC327.
TSB_GEN099_R2
Service Bulletin/Repair Instructions
TECHNICAL SERVICE BULLETIN: SERVICE ACTION: TIRE MOBILITY KIT INSPECTION & REPLACEMENT/REPAIR (SA556) - 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 inspect, and if necessary, replace the Tire Mobility Kit (TMK) sealant can or sealant can cap on certain 2023-2024MY Kia vehicles listed on page 7. Lower ambient temperatures can create a vacuum effect inside the TMK sealant can, causing the sealant can cap to open, resulting in the tire sealant leaking.
SC302Y_TSB
Service Bulletin/Repair Instructions
This bulletin provides information related to the Technical Service Bulletin previously published under SC302, titled “ICCU and Fuse Inspection/Replacement and ICCU Software Upgrade.” If DTC P1A9096 is present or stored after ICCU Software Upgrade has been performed per SC302.
SC311_OWNR
Service Campaign
VOLUNTARY SERVICE CAMPAIGN: OWNER NOTIFICATION (SC311) - This document is the owner notification advising that Kia is conducting a Voluntary Service Campaign to update the Vehicle Charge Management System (VCMS) Electronic Control Unit (ECU) with improved software in certain 2022-2024 MY EV6 vehicles. Our records indicate that you own or lease one of the potentially affected vehicles.
SC311_TSB
Service Campaign
TECHNICAL SERVICE BULLETIN: VOLUNTARY SERVICE CAMPAIGN: VCMC SOFTWARE LOGIC IMPROVEMENT (SC311) - This bulletin provides information to upgrade the software on the Vehicle Charge Management System (VCMS) in certain 2022-2024MY EV6, EV6 GT (CV) vehicles produced from November 17, 2021 through December 27, 2023. While charging using a 240-V AC (“Level 2”) charger, the subject vehicles may experience an interrupted charging session or a lower charging speed due to a degraded electrical connection from exposure to a damaged charging cable connector.
SC311_DP
Service Campaign
VOLUNTARY SERVICE CAMPAIGN: DEALER PRINCIPAL MEMO (SC311) - This document is the announcement to the dealer principals that Kia is conducting a Voluntary Service Campaign to update the Vehicle Charge Management System (VCMS) Electronic Control Unit (ECU) on certain 2022-2024 MY EV6 vehicles, manufactured from November 17, 2021 through December 27, 2023.
SC311_DPSM
Service Campaign
VOLUNTARY SERVICE CAMPAIGN: DEALER PARTS AND SERVICE MANAGER MEMO (SC311) - This document is the announcement to the dealer Parts and Service Managers that Kia is conducting a Voluntary Service Campaign to update the Vehicle Charge Management System (VCMS) Electronic Control Unit (ECU) on certain 2022-2024 MY EV6 vehicles, manufactured from November 17, 2021 through December 27, 2023.
SC311_QA
Service Campaign
VOLUNTARY SERVICE CAMPAIGN: QUESTION AND ANSWER - This document is the Question and Answer Guide containing the most frequently asked questions regarding the Voluntary Service Campaign SC311.
TSB_TRA046_R4
Service Bulletin/Repair Instructions
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.
TSB_ELE303_R2
Service Bulletin/Repair Instructions
TECHNICAL SERVICE BULLETIN: AVN 5.0 WIDE NON-RESPONSIVE RADIO ICON (AM, FM, SXM) - 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 on 5th Generation AVN wide on certain 2020-2024MY Kia vehicles (refer to model list on page 3) to remedy a 'non-responsive' or 'inoperative' radio (FM, AM, SXM, etc. ) concern. The affected AVN unit on the vehicles may not respond when pressing the 'RADIO' hard key/button on the AVN unit or when selecting the 'RADIO' icon on the AVN menu screen.
PS753
Service Bulletin/Repair Instructions
PITSTOP: AIR CONDITIONER AUTO-DRY WHILE VEHICLE IS OFF - This Pitstop provides information regarding the new feature Air Conditioner Auto-Dry on some 2022-2024MY EV6 (CV), 2024MY Sportage (NQ5a), and 2024MY Niro EV (SG2 EV) vehicles. Some Kia owners may state that their air condition fans continue to run after the vehicle has been shut off. The Air Conditioner Auto-Dry feature will automatically run the Heating, Ventilation, and Air Condition (HVAC) fan to dry the inside of the air conditioner system to help prevent mold growth. Kia owners may be unaware of the Air Conditioner Auto-Dry feature.
TSB_ELE305_R1
Service Bulletin/Repair Instructions
TECHNICAL SERVICE BULLETIN: VCU SOFTWARE LOGIC UPGRADE (SA541) - 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 software logic of the Vehicle Control Unit (VCU) on certain 2023-2024MY EV6 GT (CV GT) vehicles produced from August 25, 2022 through July 20, 2023, to optimize the brake lamp 'ON/OFF' logic to prevent momentary activation and deactivation of the brake lights when regenerative braking is in use while driving over uneven road surfaces (e.g. railroad crossings, raised pavement markers). This condition does not affect brake light activation when the brake pedal is depressed.
PS750
Service Bulletin/Repair Instructions
PITSTOP: AWD SYSTEM CONCERN DUE TO TIRE CIRCUMFERENCE - This Pitstop provides information regarding potential concerns with the All-Wheel-Drive (AWD) system due to tire sizes of differing circumference. Some customers may complain of a chatter sensation felt in the drivetrain of the vehicle and/or the failure of drivetrain component(s). A difference in tire size (width, aspect ratio, construction, rim diameter etc.) may be the cause.