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Service bulletins for the 2024 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.

59 on file from NHTSA, as of 2026-10-19.

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Only bulletins with type: Service bulletin are shown. Show all

Bulletins, newest first
WTY048_TSB2026-09-02. 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.
PI2602_TSB2026-06-17. 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.)
TSB_ELE4222026-06-03. 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_ELE4172026-05-01. 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.
PS8072026-03-12. 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.
SC320_TSB_R12025-12-02. Service bulletin. ENGINE. TECHNICAL SERVICE BULLETIN: VOLUNTARY EMISSIONS SERVICE CAMPAIGN: EGR VALVE ASSEMBLY REPLACEMENT (SC320) - 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 replace the Exhaust Gas Recirculation (EGR) Valve Assembly on certain 2024MY Kia vehicles listed in the table below. Kia has become aware that the EGR Valve Assembly in the subject vehicles may not have been manufactured to Kia’s specifications. This condition may cause the vehicle to release air pollutants which exceed Federal and California standards. As a result, the subject vehicles may exhibit an illumination of Malfunction Indicator Lamp (MIL) with DTC(s) P040500, P064200 and/or P065200.
TSB_TRA046_R52025-04-23. 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_ELE3782025-03-26. 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_TSB2025-03-25. 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.
TSB_TRA046_R42024-06-04. Service bulletin. POWER TRAIN. 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_ELE3232024-05-06. Service bulletin. ELECTRICAL SYSTEM. TECHNICAL SERVICE BULLETIN: SERVICE ACTION: PSM/IMS UNIT REPLACEMENT (SA555) - This bulletin provides information regarding a 12V battery parasitic draw concern on certain 2024MY Carnival (KA4) vehicles produced from August 28, 2023 through September 7, 2023. In these vehicles, the battery may discharge slowly over time while the vehicle is parked, potentially resulting in a no-start condition due to the power seat module (PSM) / integrated memory seat (IMS) unit, which was assembled with an incorrect internal ceramic capacitor by the supplier.
TSB_FUE062_R22024-04-03. Service bulletin. VEHICLE SPEED CONTROL; ENGINE AND ENGINE COOLING. TECHNICAL SERVICE BULLETIN: SERVICE ACTION: ECM LOGIC UPDATE FOR DTC P2118 AND THROTTLE BODY FREEZING (SA514) - 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 the procedure to update the software logic of the Engine Control Module (ECM) system on some 2022-2024MY Carnival (KA4) vehicles produced from January 4, 2021 through November 6, 2023, which may exhibit an MIL "ON" with DTC P2118. The throttle body plate may freeze after a cold soak in very cold temperatures, possibly causing the vehicle to go into "limp-home" mode. Once the vehicle is warmed up, the throttle body performs normally.
TSB_ELE303_R22024-03-02. Service bulletin. ELECTRICAL SYSTEM. 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.
PI2301A_OWNR2023-11-03. Service bulletin. SEATS; STRUCTURE. PRODUCT IMPROVEMENT CAMPAIGN: OWNER NOTIFICATION - This document is the owner notification advising that Kia is conducting a Product Improvement Campaign to install steel reinforcement plates on the second-row seat outer rails in certain 2022-2024 MY Kia Carnival vehicles equipped with sliding and removable second-row seats (excluding SX-Prestige equipped with the second-row lounge seats). Customers receiving this letter have already had this product improvement campaign performed. Since then, there have been additional improvements to the mounting bolts used for the installation of the steel reinforcement plates. Kia is requesting that customers contact an authorized Kia dealer to replace the four (4) subject mounting bolts with improved ones.
PI2301_TSB_R22023-11-03. Service bulletin. STRUCTURE; SEATS. PRODUCT IMPROVEMENT CAMPAIGN: INSTALLATION OF STEEL REINFORCEMENT PLATES FOR 2ND ROW SEAT OUTER RAILS (PI2301) - 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 steel reinforcement plates on the second-row seat outer rails in certain 2022-2024MY Carnival (KA4) vehicles (excluding SX-Prestige with the second-row lounge seats) produced from January 4, 2021 through August 21, 2023. This campaign is to reinforce the mounting points of the 2nd-row seat to the floor and minimize potential seat rail detachment, should a certain rare crash event occur.
PI2301_TSB_R12023-10-01. Service bulletin. SEATS; STRUCTURE. PRODUCT IMPROVEMENT CAMPAIGN: INSTALLATION OF STEEL REINFORCEMENT PLATES FOR 2ND ROW SEAT OUTER RAILS (PI2301) - PI2301 TEMPORARILY ON HOLD PENDING UPDATED PARTS.
PI2301_OWNR_UPD2023-10-01. Service bulletin. STRUCTURE; SEATS. PRODUCT IMPROVEMENT CAMPAIGN: OWNER NOTIFICATION - This document is the owner notification advising that that Kia is conducting a Product Improvement Campaign to install steel reinforcement plates on the second-row seat outer rails in certain 2022-2024 MY Kia Carnival vehicles equipped with sliding and removable second-row seats (excluding SX-Prestige equipped with the second-row lounge seats). This is an update following a notice that was issued in August 2023. Kia is currently experiencing an unexpected parts supply issue which is expected to continue until the first week of October 2023. Kia is requesting that customers wait until after the first week of October before contacting an authorized Kia dealer to schedule a service appointment for this Product Improvement Campaign to be performed.
PI2301_DPSM_UPD2023-10-01. Service bulletin. SEATS; STRUCTURE. PRODUCT IMPROVEMENT CAMPAIGN: DEALER PARTS AND SERVICE MANAGER MEMO - This document is the announcement to the dealer Parts and Service Managers that Kia is conducting a Product Improvement Campaign to install steel reinforcement plates on the second-row seat outer rails in certain 2022-2024 MY Kia Carnival vehicles equipped with sliding and removable second-row seats (excluding SX-Prestige equipped with the second-row lounge seats). This is an update following a notice that was issued to Kia dealers in August 2023. Kia is currently experiencing an unexpected parts supply issue which is expected to continue until the first week of October 2023. Since the remedy is not going to be available during this period, Kia is requesting that customers wait until after the first week of October before contacting an authorized Kia dealer to schedule a service appointment for this Product Improvement Campaign to be performed.
PI2301_DP_UPD2023-10-01. Service bulletin. STRUCTURE; SEATS. PRODUCT IMPROVEMENT CAMPAIGN: DEALER PRINCIPAL MEMO - This document is the announcement to the Dealer Principals that Kia is conducting a Product Improvement Campaign to install steel reinforcement plates on the second-row seat outer rails in certain 2022-2024 MY Kia Carnival vehicles equipped with sliding and removable second-row seats (excluding SX-Prestige equipped with the second-row lounge seats). This is an update following a notice that was issued to Kia dealers in August 2023. Kia is currently experiencing an unexpected parts supply issue which is expected to continue until the first week of October 2023. Since the remedy is not going to be available during this period, Kia is requesting that customers wait until after the first week of October before contacting an authorized Kia dealer to schedule a service appointment for this Product Improvement Campaign to be performed.
PI2301_TSB2023-08-24. Service bulletin. STRUCTURE; SEATS. PRODUCT IMPROVEMENT CAMPAIGN: INSTALLATION OF STEEL REINFORCEMENT PLATES FOR 2ND ROW SEAT OUTER RAILS (PI2301) - This bulletin provides information to install steel reinforcement plates on the second-row seat outer rails in certain 2022-2024MY Carnival (KA4) LX/LXS/EX/SX vehicles (without relaxation/power seat feature) produced from January 4, 2021 through August 9, 2023. This campaign is to reinforce the mounting points of the 2nd-row seat to the floor and minimize potential seat rail detachment, should a certain rare crash event occur.
PI2301_OWNR2023-08-24. Service bulletin. STRUCTURE; SEATS. PRODUCT IMPROVEMENT CAMPAIGN: OWNER NOTIFICATION - This document is the owner notification advising that Kia is conducting an important Product Improvement Campaign to install steel reinforcement plates on the second-row seat outer rails in certain 2022-2024 MY Kia Carnival LX/LXS/EX/SX vehicles equipped with sliding and removable second-row seats (excluding SX-Prestige).
PI2301_QA2023-08-24. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; STRUCTURE. PRODUCT IMPROVEMENT CAMPAIGN: QUESTION AND ANSWER - This document is the Question and Answer Guide containing the most frequently asked questions regarding the Product Improvement Campaign (PI2301).
PI2301_DPSM2023-08-24. Service bulletin. STRUCTURE; SEATS. PRODUCT IMPROVEMENT CAMPAIGN: DEALER PARTS AND SERVICE MANAGER MEMO - This document is the announcement to the dealer Parts and Service Managers that Kia is conducting an important Product Improvement Campaign to install steel reinforcement plates on the second-row seat outer rails in certain 2022-2024 MY Kia Carnival LX/LXS/EX/SX vehicles equipped with sliding and removable second-row seats (excluding SX-Prestige).
PI2301_DP2023-08-24. Service bulletin. SEATS; STRUCTURE. PRODUCT IMPROVEMENT CAMPAIGN: DEALER PRINCIPAL MEMO - This document is the announcement to the dealer principals that Kia is conducting an important Product Improvement Campaign to install steel reinforcement plates on the second-row seat outer rails in certain 2022-2024 MY Kia Carnival LX/LXS/EX/SX vehicles equipped with sliding and removable second-row seats (excluding SX-Prestige).
TSB_ENG2472023-08-03. Service bulletin. ENGINE AND ENGINE COOLING; FUEL SYSTEM, GASOLINE. TECHNICAL SERVICE BULLETIN: DATA COLLECTION: EXTRACT CALIFORNIA EMISSIONS DATA FROM ECU (DC24) - This bulletin provides information related to extracting "in use performance tracking" emissions data from the Engine Control Unit (ECU) of certain vehicles sold in California. The California Air Resources Board (CARB) requires the emissions data from vehicles with a minimum of 3,000 accumulated miles without reprogramming or resetting. To facilitate collection of this data at the dealer level, KDS screenshots will allow the capture of relevant parameters. Note that a “Web Based” KDS IUMPR Data Collection procedure is outlined.

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.