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Service bulletins for the 2023 Kia Niro

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.

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

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Only bulletins with component: Fuel system are shown. Show all

Bulletins, newest first
SC338_OWNR_SG2_1022025-09-11. Emissions. FUEL/PROPULSION SYSTEM; ELECTRICAL SYSTEM. VOLUNTARY EMISSIONS SERVICE CAMPAIGN: OWNER NOTIFICATION: EXPANSION (SC338 Flight 102) - This document is the owner notification advising that Kia is conducting a Voluntary Emissions Service Campaign to update the battery management system (BMS) to prevent overcharging of the 12V Lithium battery in certain 2023 MY Niro Hybrid (HEV) vehicles to ensure compliance with emissions regulations.
TSB_SC338_R12025-09-03. Emissions. FUEL/PROPULSION SYSTEM; ELECTRICAL SYSTEM. TECHNICAL SERVICE BULLETIN: VOLUNTARY EMISSIONS SERVICE CAMPAIGN: BMS S/W LOGIC IMPROVEMENT FOR DTC P1BB2 (SC338) - 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 upgrade the Battery Management System ‘BMS’ software logic on certain 2023-2024MY Sportage HEV (NQ5 HEV) vehicles produced from February 15, 2022 to December 15, 2023, and 2023MY Niro HEV (SG2 HEV) vehicles produced from June 21, 2022 through April 25, 2023. Due to a software issue, the Battery Management System (BMS) may inadvertently overcharge the 12V Lithium battery. If the 12V Lithium battery becomes overcharged, the subject vehicles may experience a reduction in motive power accompanied by the ‘Check Hybrid System, Stop Safely’ warning message, Hybrid system warning lamp, Service warning lamp, Charging system warning lamp, and a rapid beeping sound for approximately ten (10) seconds. (Note: This Voluntary Emissions Service Campaign supersedes SC335).
SC338_TSB2025-07-01. Service bulletin. FUEL/PROPULSION SYSTEM; ELECTRICAL SYSTEM. TECHNICAL SERVICE BULLETIN: VOLUNTARY EMISSIONS SERVICE CAMPAIGN: BMS S/W LOGIC IMPROVEMENT FOR DTC P1BB2 (SC338) - This bulletin provides information to upgrade the Battery Management System ‘BMS’ software logic on certain 2023MY Sportage HEV (NQ5 HEV) vehicles produced from February 15, 2022 to October 28, 2023, and 2023-2024MY Niro HEV (SG2 HEV) vehicles produced from June 21, 2022 through February 6, 2023. Due to a software issue, the Battery Management System (BMS) may inadvertently overcharge the 12V Lithium battery.
SC335_TSB_CLSD2025-07-01. Service bulletin. ELECTRICAL SYSTEM; FUEL/PROPULSION SYSTEM. TECHNICAL SERVICE BULLETIN: VOLUNTARY SERVICE CAMPAIGN: BMS S/W LOGIC IMPROVEMENT FOR DTC P1BB2 (SC335) CLOSED AND SUPERSEDED TO SC338 (TSB) - This bulletin is now closed. "This bulletin provided information to upgrade the Battery Management System ‘BMS’ software logic on certain 2023-2024MY Sportage HEV (NQ5 HEV) vehicles produced from February 15, 2022 to October 28, 2023, and2023-2024MY Niro HEV (SG2 HEV) vehicles produced from June 21, 2022 through February 6, 2023. Due to a software issue, the Battery Management System (BMS) may inadvertently overcharge the 12V Lithium battery.
SC338_STKR2025-06-25. Emissions. ELECTRICAL SYSTEM; FUEL/PROPULSION SYSTEM. SC338_STKR: VOLUNTARY EMISSIONS SERVICE CAMPAIGN COMPLETION LABEL/STICKER
SC338_QA2025-06-25. Emissions. FUEL/PROPULSION SYSTEM; ELECTRICAL SYSTEM. VOLUNTARY EMISSIONS SERVICE CAMPAIGN: QUESTION AND ANSWER (SC338) - This document is the Question and Answer Guide containing the most frequently asked questions regarding the Voluntary Emissions Service Campaign SC338.
SC338_POC2025-06-25. Emissions. FUEL/PROPULSION SYSTEM; ELECTRICAL SYSTEM. VOLUNTARY EMISSIONS SERVICE CAMPAIGN: SC338_POC: PROOF OF CORRECTION CARD
SC338_OWNR_SG22025-06-25. Emissions. ELECTRICAL SYSTEM; FUEL/PROPULSION SYSTEM. VOLUNTARY EMISSIONS SERVICE CAMPAIGN: OWNER NOTIFICATION (SC338) - This document is the owner notification advising that Kia is conducting a Voluntary Emissions Service Campaign to update the battery management system (BMS) to prevent overcharging of the 12V Lithium battery in certain 2023 MY Niro Hybrid (HEV) vehicles to ensure compliance with emissions regulations.
SC338_DPSM2025-06-25. Emissions. FUEL/PROPULSION SYSTEM; ELECTRICAL SYSTEM. VOLUNTARY EMISSIONS SERVICE CAMPAIGN: DEALER PARTS AND SERVICE MANAGER MEMO (SC338) - This document is the announcement to the dealer Parts and Service managers advising that Kia is conducting a Voluntary Emissions Service Campaign to update the battery management system (BMS) to prevent overcharging of the 12V Lithium battery in certain 2023-2024 MY Sportage Hybrid (HEV) vehicles manufactured from February 15, 2022 through October 28, 2023 and 2023 MY Niro Hybrid (HEV) vehicles manufactured from June 21, 2022 through February 6, 2023. These vehicles have not had SA553 completed yet.
SC338_DP2025-06-25. Emissions. ELECTRICAL SYSTEM; FUEL/PROPULSION SYSTEM. VOLUNTARY EMISSIONS SERVICE CAMPAIGN: DEALER PRINCIPAL MEMO (SC338) - This document is the announcement to the dealer principals advising that Kia is conducting a Voluntary Emissions Service Campaign to update the battery management system (BMS) to prevent overcharging of the 12V Lithium battery in certain 2023-2024 MY Sportage Hybrid (HEV) vehicles manufactured from February 15, 2022 through October 28, 2023 and 2023 MY Niro Hybrid (HEV) vehicles manufactured from June 21, 2022 through February 6, 2023. These vehicles have not had SA553 completed yet.
SC335_TSB2025-02-26. Service bulletin. ELECTRICAL SYSTEM; FUEL/PROPULSION SYSTEM. TECHNICAL SERVICE BULLETIN: VOLUNTARY SERVICE CAMPAIGN: BMS S/W LOGIC IMPROVEMENT FOR DTC P1BB2 (SC335) - This bulletin provides information to upgrade the Battery Management System ‘BMS’ software logic on certain 2023-2024MY Sportage HEV (NQ5 HEV) vehicles produced from February 15, 2022 to October 28, 2023, and 2023-2024MY Niro HEV (SG2 HEV) vehicles produced from June 21, 2022 through February 6, 2023. Due to a software issue, the Battery Management System (BMS) may inadvertently overcharge the 12V Lithium battery. If the 12V Lithium battery becomes overcharged, the subject vehicles may experience a reduction in motive power accompanied by the ‘Check Hybrid System, Stop Safely’ warning message, Hybrid system warning lamp, Service warning lamp, Charging system warning lamp, and a rapid beeping sound for approximately ten (10) seconds. (Note: This Voluntary Service Campaign supersedes ELE318/SA553).
SC335_QA2025-02-26. Service campaign. ELECTRICAL SYSTEM; FUEL/PROPULSION SYSTEM. VOLUNTARY SERVICE CAMPAIGN: QUESTION AND ANSWER (SC335) - This document is the Question and Answer Guide containing the most frequently asked questions regarding the Voluntary Service Campaign SC335.
SC335_DPSM2025-02-26. Service campaign. FUEL/PROPULSION SYSTEM; ELECTRICAL SYSTEM. VOLUNTARY SERVICE CAMPAIGN: DEALER PARTS AND SERVICE MANAGER MEMO (SC335) - This document is the announcement to the dealer Parts and Service managers advising that Kia is conducting a Voluntary Service Campaign to update the battery management system (BMS) to prevent overcharging of the 12V Lithium battery in certain 2023-2024 MY Sportage Hybrid (HEV) vehicles manufactured from February 15, 2022 through October 28, 2023 and certain 2023-2024 MY Niro Hybrid (HEV) vehicles manufactured from June 21, 2022 through February 6, 2023, that have not had SA553 completed yet. This Voluntary Service Campaign supersedes SA553.
SC335_DP2025-02-26. Service campaign. FUEL/PROPULSION SYSTEM; ELECTRICAL SYSTEM. VOLUNTARY SERVICE CAMPAIGN: DEALER PRINCIPAL MEMO (SC335) - This document is the announcement to the dealer principals advising that Kia is conducting a Voluntary Service Campaign to update the battery management system (BMS) to prevent overcharging of the 12V Lithium battery in certain 2023-2024 MY Sportage Hybrid (HEV) vehicles manufactured from February 15, 2022 through October 28, 2023 and certain 2023-2024 MY Niro Hybrid (HEV) vehicles manufactured from June 21, 2022 through February 6, 2023, that have not had SA553 completed yet. This Voluntary Service Campaign supersedes SA553.
SC323_TSB2024-10-30. Service campaign. FUEL/PROPULSION SYSTEM; ELECTRICAL SYSTEM. TECHNICAL SERVICE BULLETIN: VOLUNTARY SERVICE CAMPAIGN: VCMC LOGIC IMPROVEMENT (SC323) - This bulletin provides information to improve the software logic in the Vehicle Charging Management System (VCMS) on certain 2023-2024MY Niro EV (SG2 EV) vehicles produced from July 11, 2022 through February 23, 2024. While charging using a 240-V AC (“Level 2”) charger, the subject vehicles may experience an interrupted charging session or a lower charging speed due to a degraded electrical connection from exposure to a damaged charging cable connector. Dealers are to update the ‘VCMS’ ECU with improved software to improve charging speeds and reduce interrupted charging sessions.
SC323_QA2024-10-30. Service campaign. ELECTRICAL SYSTEM; FUEL/PROPULSION SYSTEM. VOLUNTARY SERVICE CAMPAIGN: QUESTION AND ANSWER (SC323) - This document is the Question and Answer Guide containing the most frequently asked questions regarding the Voluntary Service Campaign SC323.
SC323_OWNR2024-10-30. Service campaign. ELECTRICAL SYSTEM; FUEL/PROPULSION SYSTEM. VOLUNTARY SERVICE CAMPAIGN: OWNER NOTIFICATION (SC323) - This document is the owner notification advising that Kia is conducting a Voluntary Service Campaign to update the Vehicle Charge Management System (VCMS) Electronic Control Unit (ECU) with improved software in certain 2023-2024 MY Niro EV vehicles.
SC323_DPSM2024-10-30. Service campaign. FUEL/PROPULSION SYSTEM; ELECTRICAL SYSTEM. VOLUNTARY SERVICE CAMPAIGN: DEALER PARTS AND SERVICE MANAGER MEMO (SC323) - This document is the announcement to the dealer Parts and Service managers advising that Kia is conducting a Voluntary Service Campaign to update the VCMS ECU software to improve charging speeds and reduce interrupted charging sessions on certain 2023-2024 MY Niro EV vehicles, manufactured from July 11, 2022 through February 23, 2024.
SC323_DP2024-10-30. Service campaign. ELECTRICAL SYSTEM; FUEL/PROPULSION SYSTEM. VOLUNTARY SERVICE CAMPAIGN: DEALER PRINCIPAL MEMO (SC323) - This document is the announcement to dealer principals advising that Kia is conducting a Voluntary Service Campaign to update the VCMS ECU software to improve charging speeds and reduce interrupted charging sessions on certain 2023-2024 MY Niro EV vehicles, manufactured from July 11, 2022 through February 23, 2024.
TSB_ELE2982023-10-01. Service bulletin. ELECTRICAL SYSTEM; FUEL SYSTEM, GASOLINE; FUEL SYSTEM, DIESEL:STORAGE:TANK ASSEMBLY. TECHNICAL SERVICE BULLETIN: EV BATTERY POOR/NO CHARGING CONCERN ICCU REPLACEMENT - This bulletin provides information regarding a poor EV battery charging concern on some 2023MY Niro EV (SG2 EV) vehicles produced from January 4, 2022 through March 29, 2023, when charging using a Level 1 or Level 2 charger; however, the concern is not present when using a DC charger. In some cases, the vehicle may exhibit a "Check electric vehicle system", and/or "Stop vehicle and check power supply" message in the instrument cluster display, and/or MIL 'ON' with DTC(s) described below. The Integrated Charging Control Unit (ICCU) performs charging functions for the high voltage and the auxiliary 12V batteries, and depending on the DTC(s) stored, the ICCU may need to be replaced.
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_ELE2882023-04-06. Service bulletin. ELECTRICAL SYSTEM; FUEL SYSTEM, GASOLINE. TECHNICAL SERVICE BULLETIN: VCMS BATTERY CHARGING LOGIC IMPROVEMENT - This bulletin provides the procedure to update the software logic of the Vehicle Charging Management System (VCMS) on some 2023MY Niro EV (SG2 EV) vehicles produced from July 11, 2022 through February 7, 2023, which may set the DTC P1BAD00 and/or cause a charging issue to the High Voltage Battery (HVB)/Battery System Assembly (BSA) due to higher than "allowed" increased temperature at the charging connector.
TSB_ELE2802023-02-02. Service bulletin. ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION BATTERY:MANAGEMENT SYSTEM/ENERGY CONTROL MODULE (BMS/BECM):SOFTWARE; FUEL SYSTEM, GASOLINE; ELECTRICAL SYSTEM. TECHNICAL SERVICE BULLETIN: SERVICE ACTION: EV BATTERY COOLANT AIR BLEEDING PROCEDURE (SA522) - This bulletin provides information to perform the "Battery EWP Operation Mode for Degassing and Circulation" (battery coolant air bleeding procedure) on the Battery Management System (BMS) for some 2023MY Niro EV (SG2 EV) vehicles produced from July 11, 2022 through November 20, 2022, which may have inadvertent air trapped inside of the coolant line due to BMS software logic error of the heater relay, which may generate an MIL 'ON' with DTC P1BA800 stored.

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