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.
PSD_REMINDER2_105
Other
IMPORTANT REMINDER: OWNER NOTIFICATION: CARNIVAL POWER SLIDING DOOR FEATURE (KA4PSD2 FLIGHT#105) - This document is the owner notification advising Kia's ongoing commitment to providing vehicle owners with a superior ownership experience. We would like to remind vehicle owners about the proper use of the power sliding door and its automatic stop and reversal feature in the Kia Carnival. The power sliding door feature is designed to enhance accessibility and ease of use, but it’s important to understand its functions and limitations to ensure safe and reliable operation.
PI2602_TSB
Service Bulletin/Repair Instructions
TECHNICAL SERVICE BULLETIN: PRODUCT IMPROVEMENT CAMPAIGN: 2ND ROW SEAT (LH & RH) FOLDING TENSION SPRING REPLACEMENT (PI2602) - This bulletin provides information to enhance the second-row seatback recliner mechanism to dampen the motion of the manual seatback angle adjustment during the operation on certain 2022-2026MY Carnival (KA4) produced from 1/4/2021 through 4/14/2026 and certain 2025-2026MY Carnival Hybrid (KA4 HEV) vehicles produced from 5/21/2024 through 4/8/2026. To aid in the manual adjustment of the outboard second-row seatback in the subject vehicles, the seats are equipped with recliner springs that work in conjunction with a user-controlled seatback angle lever or walk-in lever. This seatback motion is controlled by the user to achieve their desired seat position. To improve usability, Kia has developed a newly designed second-row seatback recliner spring that will dampen the motion of the manual second-row seatback angle adjustment. (Note: Only the second-row outboard seats are affected. The second-row center seat, if equipped, is excluded from this campaign.)
PI2602_OWNR
Other
PRODUCT IMPROVEMENT CAMPAIGN: OWNER NOTIFICATION (PI2602) - This document is the owner notification advising that Kia is conducting a Product Improvement Campaign on certain 2022-2026 MY Carnival and certain 2025-2026 MY Carnival Hybrid (HEV) vehicles, equipped with manual (folding) second-row seats, to enhance the second-row seatback recliner mechanism to dampen the motion of the manual seatback angle adjustment during operation.
PI2602_QA
Other
PRODUCT IMPROVEMENT CAMPAIGN: QUESTION AND ANSWER (PI2602) - This document is the Question and Answer Guide containing the most frequently asked questions regarding the Product Improvement Campaign PI2602.
PI2602_DP
Other
PRODUCT IMPROVEMENT CAMPAIGN: DEALER PRINCIPAL MEMO (PI2602) - This document is the announcement to the dealer principals advising that Kia is conducting a Product Improvement Campaign to enhance the second-row seatback recliner mechanism to dampen the motion of the manual seatback angle adjustment during operation in certain 2022-2026 MY Carnival vehicles manufactured from January 4, 2021 through April 14, 2026 and certain 2025-2026 MY Carnival Hybrid (HEV) vehicles manufactured from May 21, 2024 through April 8, 2026.
PI2602_DPSM
Other
PRODUCT IMPROVEMENT CAMPAIGN: DEALER PARTS AND SERVICE MANAGER MEMO (PI2602) - This document is the announcement to the dealer Parts and Service managers advising that Kia is conducting a Product Improvement Campaign to enhance the second-row seatback recliner mechanism to dampen the motion of the manual seatback angle adjustment during operation in certain 2022-2026 MY Carnival vehicles manufactured from January 4, 2021 through April 14, 2026 and certain 2025-2026 MY Carnival Hybrid (HEV) vehicles manufactured from May 21, 2024 through April 8, 2026.
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).
PSD_REMINDER2_104
Other
IMPORTANT REMINDER: OWNER NOTIFICATION (KA4PSD2) - This document is the owner notification advising Kia's ongoing commitment to providing vehicle owners with a superior ownership experience. We would like to remind vehicle owners about the proper use of the power sliding door and its automatic stop and reversal feature in the Kia Carnival. The power sliding door feature is designed to enhance accessibility and ease of use, but it’s important to understand its functions and limitations to ensure safe and reliable operation.
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.
TSB_ELE413
Service Bulletin/Repair Instructions
TECHNICAL SERVICE BULLETIN: DCU COMMUNICATION LOGIC IMPROVEMENT - This bulletin provides the procedure to upgrade the Data Connectivity Unit (DCU) system software on some 2025–2026MY vehicles listed in the table below. Kia has identified that Connected Car Services (CCS) functionality may intermittently fail due to temporary DCU communication issues. This condition can impact convenience and connectivity features by causing the Remote Start and Remote Climate functions to become inoperative, prevent vehicle status updates in the Kia Access app, and interrupt connected navigation routing services.
PS807
Service Bulletin/Repair Instructions
PITSTOP: TECHNICAL OPERATIONS: CCU FUSE OPEN AFTER WIRING HARNESS REPLACEMENT - This Pitstop provides information regarding a condition on 2022-2026MY Carnival (KA4 and KA4 HEV) vehicles in which the CCU 10A fuse may open and multiple warning lights may illuminate after replacement of the front dash wiring harness.
PS798
Other
PITSTOP: TECHNICAL OPERATIONS: CCRC WITH DTC B281600 (PS798) - This Pitstop provides information regarding DTC B281600 stored on some 2025 - 2026MY Carnival (KA4, KA4 HEV) vehicles equipped with Connected Car Rear Cockpit ‘ccRC’ rear seat entertainment screens. When performing a diagnostic scan using the Kia Diagnostic System ‘KDS’, DTC B281600 can become stored but does not cause any concerns with functionality of the ccRC system. DTC B281600 does not trigger any warning lights and does not indicate any hardware malfunction within the ccRC system and does not perform any meaningful diagnostic function. No further diagnosis, Techline case and/or repairs are necessary for DTC B281600 unless there is an active customer complaint of the ccRC system. This issue is expected to be resolved through a future ccRC Over-The-Air ‘OTA’ update.
PSD_REMINDER_103
Other
IMPORTANT REMINDER: CARNIVAL POWER SLIDING DOOR FEATURE: OWNER NOTIFICATION (KA4PSD2 FLIGHT 103) - This document is the owner notification advising Kia's ongoing commitment to providing vehicle owners with a superior ownership experience. We would like to remind vehicle owners about the proper use of the power sliding door and its automatic stop and reversal feature in the Kia Carnival. The power sliding door feature is designed to enhance accessibility and ease of use, but it’s important to understand its functions and limitations to ensure safe and reliable operation.
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.)
SC352_OWNR
Service Campaign
VOLUNTARY SERVICE CAMPAIGN: OWNER NOTIFICATION (SC352) - This document is the owner notification advising that Kia is conducting a Voluntary Service Campaign on certain 2025-2026 MY Carnival Hybrid (HEV) vehicles to update the Heating, Ventilation, and Air Conditioning (HVAC) control software to prevent excessive discharging of the 12V battery by the Positive Temperature Coefficient (PTC) heater under certain operating conditions.
SC352_QA
Service Campaign
VOLUNTARY SERVICE CAMPAIGN: QUESTION AND ANSWER (SC352) - This document is the Question and Answer Guide containing the most frequently asked questions regarding the Voluntary Service Campaign SC352.
SC352_TSB
Service Bulletin/Repair Instructions
VOLUNTARY SERVICE CAMPAIGN: HVAC SOFTWARE UPGRADE FOR PTC OPERATION LOGIC IMPROVEMENT (SC352) - This bulletin provides information to upgrade the Heating, Ventilation, and Air Conditioning (HVAC) control software on certain 2025-2026MY Carnival HEV (KA4 HEV) vehicles produced from May 16, 2024 through September 8, 2025, to prevent excessive discharging of the 12V battery by the Positive Temperature Coefficient (PTC) heater under certain operating conditions. When the engine is below operating temperature, the PTC heater is used to provide additional heat to the cabin. In very cold environments and under high electrical load, the PTC heater in the subject vehicles may discharge the 12V battery faster than it can charge. If the 12V battery becomes excessively discharged, the vehicle may enter Limp Home Mode with speed temporarily limited to a maximum of 31mph until the vehicle reaches normal operating temperature. There are no warning lamps or warning messages associated with this condition.
SC352_DP
Service Campaign
VOLUNTARY SERVICE CAMPAIGN: DEALER PRINCIPAL MEMO (SC352) - This document is the announcement to the dealer principals advising that Kia is conducting a Voluntary Service Campaign on certain 2025-2026 MY Carnival Hybrid (HEV) vehicles manufactured from May 16, 2024 through September 8, 2025 to update the Heating, Ventilation, and Air Conditioning (HVAC) control software to prevent excessive discharging of the 12V battery by the Positive Temperature Coefficient (PTC) heater under certain operating conditions.
SC352_DPSM
Service Campaign
VOLUNTARY SERVICE CAMPAIGN: DEALER PARTS AND SERVICE MANAGER MEMO (SC352) - This document is the announcement to the dealer Parts and Service managers advising that Kia is conducting a Voluntary Service Campaign on certain 2025-2026 MY Carnival Hybrid (HEV) vehicles manufactured from May 16, 2024 through September 8, 2025 to update the Heating, Ventilation, and Air Conditioning (HVAC) control software to prevent excessive discharging of the 12V battery by the Positive Temperature Coefficient (PTC) heater under certain operating conditions.
PSD_REMINDER2_102
Other
IMPORTANT REMINDER: CARNIVAL POWER SLIDING DOOR FEATURE: OWNER NOTIFICATION (KA4PSD2 FLIGHT 102) - This document is the owner notification advising Kia's ongoing commitment to providing Kia Carnival vehicle owners with a superior ownership experience. This is reminder about the proper use of the power sliding door and its automatic stop and reversal feature in your Kia Carnival. The power sliding door feature is designed to enhance accessibility and ease of use, but it’s important to understand its functions and limitations to ensure safe and reliable operation.
PSD_REMINDER2
Other
IMPORTANT REMINDER: CARNIVAL POWER SLIDING DOOR FEATURE: OWNER NOTIFICATION (KA4PSD2) - This document is the owner notification advising Kia's ongoing to providing you with a superior ownership experience, we’d like to remind you about the proper use of the power sliding door and its automatic stop and reversal feature in your Kia Carnival. The power sliding door feature is designed to enhance accessibility and ease of use, but it’s important to understand its functions and limitations to ensure safe and reliable operation.
TSB_ELE386
Service Bulletin/Repair Instructions
TECHNICAL SERVICE BULLETIN: SERVICE ACTION: MCU DTC LOGIC IMPROVEMENT (SA617) - This bulletin provides information to upgrade the Motor Control Unit ‘MCU’ system software on certain 2025MY Carnival HEV (KA4 HEV) vehicles produced from June 27, 2024, through March 19, 2025. The affected vehicles may exhibit an intermittent Malfunction Indicator Lamp ‘MIL’ illuminated on the instrument cluster with DTC P0C7300. The DTC is caused by a software logic error within the Integrated Thermal Management Module ‘ITM’, which controls the coolant flow rate according to the coolant temperature.
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_ELE341_R4
Service Bulletin/Repair Instructions
TECHNICAL SERVICE BULLETIN: COMBINATION TSB/SERVICE ACTION: CCNC – DEALER MODE, FACTORY & NETWORK RESET (SA613) - This bulletin has been revised as a Combination TSB/SA and includes additional information. New/revised sections of this bulletin are indicated by a black bar in the margin area. This bulletin provides information to access the ‘Dealer Mode’ function on 2024MY~ models listed on page 5 equipped with a Connected Car Navigation Cockpit (ccNC) head unit, and to perform a ‘Reset Network’ and/or ‘Factory Reset’ to address customer concerns related to activation of Kia Connect or Kia Connect features that may have stopped working.
TSB_ELE366
Service Bulletin/Repair Instructions
TECHNICAL SERVICE BULLETIN: SERVICE ACTION: DRIVE MODE BUTTON COVER REPLACEMENT (SA597) - This bulletin provides the procedure to replace the ‘Drive Mode’ button cover on certain 2025MY Carnival HEV (KA4 HEV) vehicles produced from August 23, 2024 through October 19, 2023, which may exhibit a stuck or “sticky” ‘Drive Mode’ button operation. Due to variations in ambient temperature, the ‘Drive Mode’ button cover material may expand or contract, preventing the button from returning to the default position.
TSB_ELE368_R1
Service Bulletin/Repair Instructions
TECHNICAL SERVICE BULLETIN: SERVICE ACTION: KIA CONNECT ACTIVATION FAILURE (SA600) - 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 access the ‘Dealer Mode’ function and perform a ‘Reset Network’ on certain 2025MY Multiple Model vehicles listed on page 7 equipped with a Connected Car Navigation Cockpit (ccNC) head unit to address customer concerns related to activation of Kia Connect due to missing modem data caused by a data transmission error.