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

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Bulletins, newest first
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.
TSB_ELE3032023-09-06. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. TECHNICAL SERVICE BULLETIN: AVN 5.0 WIDE NON-RESPONSIVE RADIO ICON (AM, FM, SXM) - This bulletin provides information to update the software on 5th Generation AVN wide on certain 2020-2023MY Kia vehicles 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. Follow the procedure outlined in this publication to update the software on 5th Generation AVN wide units using the applicable USB Flash Drive A or B for the applicable vehicle.
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_ENG239_R12023-04-28. Service bulletin. ELECTRICAL SYSTEM; FUEL SYSTEM, DIESEL:STORAGE:TANK ASSEMBLY. TECHNICAL SERVICE BULLETIN: DATA COLLECTION: EXTRACT CALIFORNIA EMISSIONS DATA FROM ECU (DC23) - 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 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.
TSB_ELE2892023-04-06. Service bulletin. ELECTRICAL SYSTEM. TECHNICAL SERVICE BULLETIN: SERVICE ACTION: TIGHTENING OF IGNITION GROUND BOLTS (SA531) -This bulletin provides information to tighten the two (2) ignition ground bracket bolts on certain 2023MY Carnival (KA4) vehicles produced from November 8, 2022 through November 11, 2022, which may not have been properly torqued during assembly and cause the vehicle to exhibit an intermittent engine hesitation and/or poor starting condition.
TSB_FUE0622022-12-20. Service bulletin. VEHICLE SPEED CONTROL; ELECTRICAL SYSTEM; FUEL SYSTEM, GASOLINE. TECHNICAL SERVICE BULLETIN: SERVICE ACTION: ECM LOGIC UPDATE FOR DTC P2118 AND THROTTLE BODY FREEZING (SA514) - This bulletin provides the procedure to update the software logic of the Engine Control Module (ECM) system on some 2022-2023MY Carnival (KA4) vehicles produced from January 4, 2021 through October 26, 2022, 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_TRA046_R32022-12-06. Service bulletin. POWER TRAIN. TECHNICAL SERVICE BULLETIN: TRANSMISSION FLUID APPLICATION GUIDE - 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, refer to applicable vehicles in the chart starting on page 2.
TSB_ELE263_R12022-11-02. Service bulletin. ELECTRICAL SYSTEM. TECHNICAL SERVICE BULLETIN: LOW PITCH & HIGH PITCH HORN REPLACEMENT - 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 both the low and high pitch horns on some 2022-2023MY Carnival (KA4) vehicles produced from January 4, 2021 through May 2, 2022, which may exhibit an inoperative low or high pitch horn.
TSB_BOD3112022-11-02. Service bulletin. STRUCTURE; STRUCTURE:BODY:DOOR. TECHNICAL SERVICE BULLETIN: SERVICE ACTION: FRONT DOOR WEATHERSTRIP INSPECTION AND REPLACEMENT (SA510) - This bulletin provides information to inspect and, if necessary, replace the front door weatherstrip on some 2023MY Carnival (KA4) vehicles produced from July 14, 2022 through September 8, 2022, which may exhibit a deformation of the weatherstrip in the upper rear corner area (center 'B' pillar) of the front door. Kia is requesting the completion of this Service Action on all affected vehicles in dealer stock, prior to delivery. If deformation is present, replace the front door weatherstrip on the affected side(s).
TSB_ELE2662022-11-02. Service bulletin. ELECTRICAL SYSTEM. TECHNICAL SERVICE BULLETIN: AVN 5.0W SOFTWARE UPDATE FOR NETFLIX & Wi-Fi HOTSPOT FUNCTIONS ON RSE - This bulletin provides information to update the AVN 5 Wide software to improve Netflix and Wi-Fi functionality on some 2022-2023MY Carnival (KA4) vehicles, produced from January 4, 2021 through August 12, 2022, which may have issues with Netflix not working or Wi-Fi Hotspot not connecting on the Rear Seat Entertainment (RSE) system.
TSB_ELE2672022-09-30. Service bulletin. ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING. TECHNICAL SERVICE BULLETIN: SERVICE ACTION: 3.5L GDI ECM LOGIC IMPROVEMENT (SA508) - This bulletin provides the procedure to update the software logic of the Engine Control Module (ECM) on some 2023MY Carnival (KA4) vehicles produced from March 24, 2022 through July 14, 2022, that may experience a temporary, lower than expected engine speed while decelerating or idling, while applying torque converter dampening.
TSB_ELE209_R32022-08-18. Service bulletin. ELECTRICAL SYSTEM. TECHNICAL SERVICE BULLETIN: SERVICE REMINDER SETTING RESET PROCEDURE - This bulletin provides the procedure to turn OFF the service reminder lamp, at the first service interval reminder alert that will display on the instrument cluster. The KDS is required to change the setting from "Workshop" to "Customer Mode."
PS672_R12022-08-18. Service bulletin. ELECTRICAL SYSTEM; SEATS. PITSTOP: REAR OCCUPANT ALERT (ROA) W/REAR DOOR LOGIC - 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 Pitstop provides information regarding the Rear Occupant Alert (ROA) with Rear Door Logic system on all 21MY~ models equipped with this feature. This system is designed to help prevent a rear passenger from being left inside the vehicle when exiting. The "Check Rear Seats" message will display on the cluster when driver opens the front door, if during vehicle operation the rear doors (one or both) were opened and closed.
TSB_ELE2632022-08-18. Service bulletin. ELECTRICAL SYSTEM. TECHNICAL SERVICE BULLETIN: LOW PITCH & HIGH PITCH HORN REPLACEMENT - This bulletin provides information to replace both the low and high pitch horns on some 2022-2023MY Carnival (KA4) vehicles produced from January 4, 2021 through May 2, 2022, which may exhibit and inoperative low or high pitch horn. If either horn is inoperative, then follow the procedure outlined in this publication to replace BOTH low and high pitch horns.
TSB_ENG2392022-07-02. Service bulletin. ENGINE AND ENGINE COOLING. TECHNICAL SERVICE BULLETIN: DATA COLLECTION: EXTRACT CALIFORNIA EMISSIONS DATA FROM ECU (DC23) - 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.

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