2025 Kia Carnival TSBs

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 address air conditioning performance issues reported on certain 2025-2026 model year Carnival (KA4) vehicles produced between December 1, 2024, and June 12, 2025. Customers may experience intermittent cooling or insufficient cooling at low blower speeds. The cause may be excessive clearance between the compressor piston and cylinder, which reduces refrigerant compression and results in inconsistent or weak cooling performance.

address air conditioning performance issues reported on certain 2025- 2026 model year Carnival (KA4) vehicles produced between December 1, 2024, and June 12, 2025. Customers may experience intermittent cooling or insufficient cooling at low blower speeds. The cause may be excessive clearance between the compressor piston and cylinder, which reduces refrigerant compression and results in inconsistent or weak cooling performance.

software update is designed to update the Motor Control Unit (MCU) logic of certain 2025 Carnival vehicles. This update is designed to improve the control logic of the Electric Water Pump to reduce the unintended display of warning lights.

information to upgrade the Engine Control Module (ECM) system software on certain 2025MY Carnival (KA4) vehicles equipped with 3.5L GDI Lambda engines produced from April 15, 2024 through November 27, 2024. The subject vehicles may have been produced with engine calibration that may cause the vehicle to release air pollutants that exceed Federal and California standards and cause the illumination of the Malfunction Indicator Lamp (MIL) with DTC P046100. These standards were established to protect the public health and welfare from the dangers of air pollutants.

Kia is conducting a Voluntary Emissions Service Campaign to improve the emissions software logic in the Electronic Control Module (ECM) on certain 2025 MY Carnival vehicles equipped with 3.5L Gas Direct Injection (GDI) engines to ensure compliance with emissions regulations.

to the dealer Parts and Service managers advising that Kia is conducting a Voluntary Emissions Service Campaign on certain 2025 MY Kia Carnival vehicles equipped with 3.5L Gas Direct Injection (GDI) engines manufactured from April 15, 2024 to November 27, 2024 to improve the emissions software logic in the Electronic Control Module (ECM) to ensure compliance with emissions regulations.

principals advising that Kia is conducting a Voluntary Emissions Service Campaign on certain 2025 MY Kia Carnival vehicles equipped with 3.5L Gas Direct Injection (GDI) engines manufactured from April 15, 2024 to November 27, 2024 to improve the emissions software logic in the Electronic Control Module (ECM) to ensure compliance with emissions regulations.

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 its important to understand its functions and limitations to ensure safe and reliable operation.

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 its important to understand its functions and limitations to ensure safe and reliable operation.

notification advising Kia's ongoing to providing you with a superior ownership experience, wed 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 its important to understand its functions and limitations to ensure safe and reliable operation.

conducting a customer satisfaction campaign to replace the interior door trim color to Tuscan Umber on certain 2025 Kia Carnival vehicles (CS2401).

information to replace the front and rear door trim assemblies on certain 2025MY Carnival (KA4) EX, SX, SXP vehicles produced from April 16, 2024 through May 24, 2024. Since the production of the subject vehicles, Kia has made a production change to the door trim color and is making that color available at no charge to those customers who elect to have the door trim color changed.

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.

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.

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.

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.

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.)

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.

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.

A flush is required ONLY when a transmission is replaced.

conducting an important Product Improvement Campaign to install covers onto the 2nd row seat rails in all 2022-2024 MY Kia Carnival vehicles and certain 2025 MY Carnival vehicles.

the most frequently asked questions regarding the Product Improvement Campaign PI2501.

dealer Parts and Service managers advising that Kia is conducting an important Product Improvement Campaign to install covers onto the 2nd row seat rails in all 2022-2024 MY Kia Carnival vehicles and certain 2025 MY Carnival vehicles manufactured from January 4, 2021 through March 31, 2025.

principals advising that Kia is conducting an important Product Improvement Campaign to install covers onto the 2nd row seat rails in all 2022-2024 MY Kia Carnival vehicles and certain 2025 MY Carnival vehicles manufactured from January 4, 2021 through March 31, 2025.

containing the most frequently asked questions regarding the Voluntary Emissions Service Campaign SC333.

designed to update the Central Communication Unit (CCU) logic of certain 2025 Carnival vehicles. This update is designed to help reduce auxiliary battery power consumption while the vehicle is turned off.

update the software logic of the Central Communication Unit (CCU) system on certain 2025MY Carnival (KA4) vehicles produced from April 15, 2024 through August 26, 2024 and Carnival HEV (KA4 HEV) vehicles produced from July 8, 2024 to September 23, 2024. The affected vehicles may experience a dark current draw from the 12V battery while the vehicle is parked, potentially resulting in low battery voltage and no-start condition.

provides information to install new 2nd -row seat rail covers on all 2022-2024MY, and certain 2025MY Carnival (KA4) vehicles manufactured from January 4, 2021 through March 31, 2025. The subject vehicles are equipped with seat rails on the interior floor of the passenger compartment which allow for the adjustment of the 2nd -row seats. Under certain operating conditions in high temperature environments, the 2nd -row seat rails may become warm or hot to the touch. A hot seat rail can result in discomfort if an occupant touches the seat rail with their bare skin. This campaign is to install covers on the 2nd -row seat rails that reduce the surface temperature of the rails and improve the vehicle occupants experience.