# Service bulletins for the 2023 Kia Carnival

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.

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

- [WTY048\_TSB](/bulletins/11036722.md), 2026-09-02, Service bulletin: ELECTRICAL SYSTEM. TECHNICAL SERVICE BULLETIN: HORN ASSEMBLY INSPECTION/REPLACEMENT \(WTY048\) \- This bulletin provides information associated with the Warranty Extension Program \(WTY048\) to inspect and, if necessary, replace both the high\-pitch and low\-pitch horn assemblies on certain 2022\-2024MY Carnival \(KA4\) vehicles produced from January 4, 2021 through July 4, 2024. The affected vehicles may experience a distorted or inoperative horn sound caused by excessive moisture and dust exposure over time. The warranty coverage for repairs related to the horn assembly has been extended from 5 years / 60,000 miles to 10 years / 120,000 miles, whichever comes first, starting from the date the vehicle was first put into service.
- [WTY048\_QA](/bulletins/11036721.md), 2026-09-02, Warranty extension: ELECTRICAL SYSTEM. WARRANTY EXTENSION CAMPAIGN: QUESTION AND ANSWER \(WTY048\) \- This document is the Question and Answer Guide containing the most frequently asked questions regarding the Warranty Extension Campaign WTY048.
- [WTY048\_OWNR](/bulletins/11036711.md), 2026-09-02, Warranty extension: ELECTRICAL SYSTEM. WARRANTY EXTENSION CAMPAIGN: OWNER NOTIFICATION \(WTY048\) \- This document is the owner notification advising that Kia is extending the New Vehicle Limited Warranty coverage, to all owners, for repairs related to the horn assembly in certain 2022\-2024 MY Carnival vehicles from 5 years / 60,000 miles to 10 years / 120,000 miles, whichever comes first, starting from the date the vehicle was first put into service. This warranty extension is to address a horn sound malfunction condition free of charge at no cost to the customer.
- [WTY048\_DPSM](/bulletins/11036701.md), 2026-09-02, Warranty extension: ELECTRICAL SYSTEM. WARRANTY EXTENSION CAMPAIGN: DEALER PARTS AND SERVICE MANAGER MEMO \(WTY048\) \- 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 repairs related to the horn assembly for certain 2022\-2024 MY Carnival vehicles manufactured from January 4, 2021 through July 4, 2024, from 5 years / 60,000 miles to 10 years / 120,000 miles, whichever comes first, from the date the vehicle was first put into service. This warranty extension is to address a horn sound malfunction condition.
- [WTY048\_DP](/bulletins/11036631.md), 2026-09-02, Warranty extension: ELECTRICAL SYSTEM. WARRANTY EXTENSION CAMPAIGN: DEALER PRINCIPAL MEMO \(WTY048\) \- This document is the announcement to the dealer principals advising that Kia is s extending the New Vehicle Limited Warranty coverage, to all owners, for repairs related to the horn assembly for certain 2022\-2024 MY Carnival vehicles manufactured from January 4, 2021 through July 4, 2024, from 5 years / 60,000 miles to 10 years / 120,000 miles, whichever comes first, from the date the vehicle was first put into service. This warranty extension is to address a horn sound malfunction condition.
- [PSD\_REMINDER2\_105](/bulletins/11034103.md), 2026-06-26, Other: STRUCTURE:BODY. 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](/bulletins/11033919.md), 2026-06-17, Service bulletin: SEATS. 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\_QA](/bulletins/11033835.md), 2026-06-16, Other: SEATS. 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\_OWNR](/bulletins/11033834.md), 2026-06-16, Other: SEATS. 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\_DPSM](/bulletins/11033829.md), 2026-06-15, Other: SEATS. 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.
- [PI2602\_DP](/bulletins/11033827.md), 2026-06-15, Other: SEATS. 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.
- [TSB\_ELE422](/bulletins/11033217.md), 2026-06-03, Service bulletin: ELECTRICAL SYSTEM. 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 \(2021\-2026MY All Models\).
- [TSB\_ELE417](/bulletins/11031906.md), 2026-05-01, Service bulletin: ELECTRICAL SYSTEM. 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.
- [PSD\_REMINDER2\_104](/bulletins/11031853.md), 2026-05-01, Other: STRUCTURE:BODY. 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.
- [PS807](/bulletins/11029974.md), 2026-03-12, Service bulletin: ELECTRICAL SYSTEM. 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.
- [PSD\_REMINDER\_103](/bulletins/11026826.md), 2025-12-24, Other: STRUCTURE:BODY; ELECTRICAL SYSTEM. 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](/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. \(Please note that this Pitstop only applies to models/trims that are equipped with the ultrasonic sensors.\)
- [PSD\_REMINDER2\_102](/bulletins/11024181.md), 2025-10-08, Other: ELECTRICAL SYSTEM; STRUCTURE:BODY. 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.
- [PS788](/bulletins/11023404.md), 2025-10-01, Other: STRUCTURE:BODY; ELECTRICAL SYSTEM. PITSTOP: TECHNICAL OPERATIONS: FUEL FILLER DOOR ACTUATOR REPLACEMENT \- This Pitstop provides information regarding the replacement of the fuel filler door actuator and wiring harness on 2022\-2024MY Carnival \(KA4\) vehicles. When replacing a faulty fuel filler door actuator, ensure to order the corresponding replacement part number \(shown below\) for the applicable vehicle production date. Selecting the incorrect part may result in a vehicle “comeback” with a customer complaint of the driver’s side sliding door not operating with the power feature; however, the door can still be operated manually.
- [PSD\_REMINDER2](/bulletins/11021053.md), 2025-07-31, Other: STRUCTURE:BODY; ELECTRICAL SYSTEM. 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\_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\_ELE378](/bulletins/11015973.md), 2025-03-26, Service bulletin: ELECTRICAL SYSTEM. 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.
- [PI2501\_TSB](/bulletins/11015935.md), 2025-03-25, Service bulletin: SEATS. TECHNICAL SERVICE BULLETIN: PRODUCT IMPROVEMENT CAMPAIGN: 2ND \-ROW SEAT RAIL COVER INSTALLATION \(PI2501\) \- This bulletin 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.
- [PI2501\_OWNR](/bulletins/11015934.md), 2025-03-25, Other: SEATS. PRODUCT IMPROVEMENT CAMPAIGN: OWNER NOTIFICATION \(PI2501\) \- This document is the owner notification advising that Kia 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.
- [PI2501\_QA](/bulletins/11015933.md), 2025-03-25, Other: SEATS. PRODUCT IMPROVEMENT CAMPAIGN: QUESTION AND ANSWER \(PI2501\) \- This document is the Question and Answer Guide containing the most frequently asked questions regarding the Product Improvement Campaign PI2501.

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