2026 Kia Carnival Technical Service Bulletins

27 technical service bulletins (TSBs) are on record for the 2026 Kia Carnival. TSBs are notes manufacturers send to dealers about repair procedures for issues seen in the field. They are not recalls and do not by themselves mean a vehicle has a fault.

• 11034103Jun 19, 2026Body and structure. 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.
• 11033980Jun 18, 2026Electrical system. RELEASE NOTES: OVER-THE-AIR: SOFTWARE UPDATE FOR DATA CONNECTIVITY (ELE413 Revision 2) - This Over-the-Air (OTA) software update is designed to update the Data Connectivity Unit (DCU) logic of certain 2025 - 2026MY Carnival, EV9, K5 and Sorento vehicles. This update is designed to improve the vehicle’s network communication performance.
• 11033919Jun 16, 2026Seats. 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…
• 11033834Jun 12, 2026Seats. 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…
• 11033835Jun 10, 2026Seats. 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.
• 11033829Jun 9, 2026Seats. 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…
• 11033827Jun 9, 2026Seats. 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…
• 11033217May 28, 2026Electrical 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…
• 11031940Apr 24, 2026Electrical system. RELEASE NOTES: OVER-THE-AIR: SOFTWARE UPDATE FOR DATA CONNECTIVITY (ELE413 Revision 1) - This Over-the-Air (OTA) software update is designed to update the Data Connectivity Unit (DCU) logic of certain 2025 - 2026MY Carnival, 2025 - 2026MY K5 and 2025 - 2026MY Sorento vehicles. This update is designed to improve the vehicle’s network communication performance.
• 11031890Apr 17, 2026Transmission and drivetrain. TECHNICAL SERVICE BULLETIN: VOLUNTARY SERVICE CAMPAIGN: OIL LEVEL PLUG (OLP) INSPECTION, AND OLP GASKET AND/OR ATF FILLER BOLT REPLACEMENT OR A/T REPLACEMENT (SC363) - This bulletin provides information to inspect the oil level plug and automatic transmission fluid (ATF) for signs of leakage and, if necessary, replace the oil level plug gasket and/or ATF filler bolt, or the 8-speed Automatic Transaxle (A/T)…
• 11031885Apr 17, 2026Transmission and drivetrain. VOLUNTARY SERVICE CAMPAIGN: OWNER NOTIFICATION (SC363) - This document is the owner notification advising that Kia is conducting a Voluntary Service Campaign on certain 2025-2026 MY Carnival vehicles to inspect the oil level plug and automatic transmission fluid (ATF) for signs of leakage and, if necessary, replace the oil level plug gasket and ATF filler bolt and ensure the oil level plug is tightened to Kia’s…
• 11031853Apr 17, 2026Body and structure. 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.
• 11031856Apr 15, 2026Transmission and drivetrain. VOLUNTARY SERVICE CAMPAIGN: DEALER PARTS AND SERVICE MANAGER MEMO (SC363) - This document is the announcement to the dealer Parts and Service managers advising that Kia is conducting a Voluntary Service Campaign to inspect the oil level plug and automatic transmission fluid (ATF) for signs of leakage and, if necessary, replace the oil level plug gasket and ATF filler bolt and ensure the oil level plug is tightened…
• 11031855Apr 15, 2026Transmission and drivetrain. VOLUNTARY SERVICE CAMPAIGN: DEALER PRINCIPAL MEMO (SC363) - This document is the announcement to the dealer principals advising that Kia is conducting a Voluntary Service Campaign to inspect the oil level plug and automatic transmission fluid (ATF) for signs of leakage and, if necessary, replace the oil level plug gasket and ATF filler bolt and ensure the oil level plug is tightened to Kia’s factory specifications.
• 11031906Apr 14, 2026Electrical 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.
• 11031889Apr 14, 2026Transmission and drivetrain. VOLUNTARY SERVICE CAMPAIGN: QUESTION AND ANSWER (SC363) - This document is the Question and Answer Guide containing the most frequently asked questions regarding the Voluntary Service Campaign SC363.
• 11030344Mar 20, 2026Electrical system. 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.
• 11029974Mar 5, 2026Electrical 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.
• 11028738Feb 10, 2026Engine. TECHNICAL SERVICE BULLETIN: DATA COLLECTION: EXTRACT CALIFORNIA EMISSIONS DATA FROM ECU (DC26) - 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 monitoring performance tracking” emissions data from the Engine Control Unit (ECU) of certain vehicles…
• 11027858Jan 28, 2026Engine. TECHNICAL SERVICE BULLETIN: DATA COLLECTION: EXTRACT CALIFORNIA EMISSIONS DATA FROM ECU (DC26) - This bulletin provides information related to extracting “in use monitoring 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…
• 11027676Jan 15, 2026Electrical system. 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…
• 11026826Dec 11, 2025Body and structure, 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.
• 11026698Dec 9, 2025Back-over prevention (rear camera). 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.
• 11025765Nov 25, 2025Visibility (wipers, defrost, mirrors). TECHNICAL SERVICE BULLETIN: SERVICE ACTION: A/C COMPRESSOR REPLACEMENT (SA632) - 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 address air conditioning performance issues reported on certain 2025-2026 model year Carnival (KA4) vehicles produced…
• 11025764Nov 8, 2025Visibility (wipers, defrost, mirrors), Electrical system. TECHNICAL SERVICE BULLETIN: SERVICE ACTION: A/C COMPRESSOR REPLACEMENT (SA632) - 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.
• 11024181Oct 3, 2025Body and structure, Electrical system. 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.
• 11023099Sep 10, 2025Electrical system. TECHNICAL SERVICE BULLETIN: CCNC – DEALER MODE NETWORK RESET (SA625) - This bulletin provides information to access the ‘Dealer Mode’ function on 2026MY models listed on page 6 equipped with a Connected Car Navigation Cockpit (ccNC) head unit, and to perform a ‘Reset Network’ to address customer concerns related to activation of Kia Connect or Kia Connect features that may have stopped working.

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