# Service bulletins for the 2023 Hyundai Kona

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.

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

- [26\-EM\-016H TSB](/bulletins/11038458.md), 2026-10-14, Service bulletin: ENGINE. Some vehicles equipped with internal combustion engines may exhibit higher\-than\-expected engine oil consumption. This bulletin outlines the combustion chamber cleaning procedure for vehicles diagnosed with this condition. All internal combustion engines consume some engine oil during normal operation, depending on driving conditions and mileage, and this procedure should only be performed when deemed necessary based on inspection and diagnosis of the vehicle as outlined in TSB 26\-EM\-015H, Engine Oil Consumption – Inspection \& Repair Guidelines, or the latest revision.
- [26\-EM\-015H TSB](/bulletins/11038456.md), 2026-10-13, Service bulletin: ENGINE. Certain vehicles equipped with internal combustion engines may exhibit higher\-than\-expected engine oil consumption. This bulletin provides the inspection and repair procedures for vehicles exhibiting this condition. All internal combustion engines consume engine oil as part of normal engine operation. Oil consumption rates may vary based on mileage, operating conditions, driving habits, and maintenance history. Hyundai recommends following the prescribed maintenance schedule and periodically checking the engine oil level using the dipstick to maintain proper engine oil level.
- [9C5 OL](/bulletins/11037293.md), 2026-09-11, Service campaign: ELECTRICAL SYSTEM; FUEL/PROPULSION SYSTEM. Hyundai has determined that certain Kona Electric and Ioniq Electric vehicles are eligible for a BMS software update. This update to the BMS software improves the system’s diagnostic capability.
- [26\-01\-065H DCS](/bulletins/11036686.md), 2026-09-02, Service campaign: FUEL/PROPULSION SYSTEM; ELECTRICAL SYSTEM. Certain Kona Electric \(OS EV\) and Ioniq Electric \(AE EV\) vehicles are eligible for a Battery Management System \(BMS\) software update. This update to the BMS software improves the system's diagnostic capability. Follow Technical Service Bulletin \(TSB\) 26\-01\-065H to complete the BMS software update.
- [26\-01\-065H DN](/bulletins/11036685.md), 2026-09-02, Service campaign: FUEL/PROPULSION SYSTEM; ELECTRICAL SYSTEM. Certain Kona Electric \(OS EV\) and Ioniq Electric \(AE EV\) vehicles are eligible for a Battery Management System \(BMS\) software update. This update to the BMS software improves the system’s diagnostic capability.
- [26\-01\-065H TSB](/bulletins/11036311.md), 2026-08-21, Service campaign: ELECTRICAL SYSTEM; FUEL/PROPULSION SYSTEM. Certain Kona Electric \(OS EV\) and Ioniq Electric \(AE EV\) vehicles are eligible for a Battery Management System \(BMS\) software update. This update to the BMS software improves the system’s diagnostic capability. Follow this bulletin to complete the BMS software update.
- [26\-GI\-002H TSB](/bulletins/11033710.md), 2026-06-06, Service bulletin: ELECTRICAL SYSTEM. This bulletin provides information related to the navigation and head unit software changes introduced in the 2026 1st Navigation Map and Software Update. The changes may vary depending on vehicle type, model, and navigation system. Refer to the 2026 1st Navigation Map and Software Update Key Improvements and Additional Improvements tables in this TSB for a list of specific changes. The software can be downloaded via Navigation Updater \(NAU\) and updated by USB.
- [Z07 OL](/bulletins/11032720.md), 2026-05-16, Warranty extension: UNKNOWN OR OTHER. Certain 2021\-2023 model year Kona, 2021\-2023 model year Kona Electric, and 2022\-2023 model year Kona N vehicles may experience an inoperable horn that may be caused by foreign substances causing internal parts to oxidize. At Hyundai, we are committed to providing vehicles of outstanding quality and value. In an effort to meet this commitment, the warranty coverage for the horn assembly replacement has been extended to 10 years / 120,000 miles from the date of original retail delivery or date of first use \(whichever occurs first\) and is valid for original and subsequent owners.
- [DTN DL](/bulletins/11032523.md), 2026-05-08, Other: AIR BAGS. The National Highway Traffic Safety Administration \(NHTSA\) has identified the presence of substandard and dangerous driver’s\-side airbag inflators manufactured by Jilin Province Detiannuo Automobile Safety System Co., Ltd. \(DTN\). These inflators were not supplied, approved, or authorized by the vehicle manufacturers and have primarily been found in vehicles that previously experienced a crash and underwent airbag replacement using non\-genuine parts. These dangerous inflators have ruptured during deployment, posing a serious risk of injury or death due to metal fragments entering the vehicle cabin. To date, Hyundai is aware of three people who have died while driving a Hyundai vehicle with one of these substandard replacement airbag inflators that deployed in what likely would have been a survivable crash. NHTSA has issued a public advisory urging vehicle owners and service professionals to have vehicles inspected if there is reason to believe that a non\-genuine replacement airbag may have been installed. Vehicles with salvage or rebuilt titles, prior airbag deployments, or unknown repair histories may present a higher risk. NHTSA strongly cautions against self\-inspection by vehicle owners and recommends inspection by trained technicians.
- [DTN DCS](/bulletins/11032522.md), 2026-05-08, Other: AIR BAGS. The National Highway Traffic Safety Administration \(NHTSA\) has issued an urgent safety advisory regarding dangerous, counterfeit driver‑side airbag inflators manufactured by Jilin Province Detiannuo Automobile Safety System Co., Ltd. \(DTN\), that have been identified in U.S. vehicles following prior crashes, theft, or non‑certified airbag replacements. These inflators are not approved for use, may rupture during deployment, and have caused serious injuries and fatalities. Please see attached announcement, provided by NHTSA, for more details.
- [26\-EE\-003H TSB](/bulletins/11031400.md), 2026-04-21, Service bulletin: ENGINE; ELECTRICAL SYSTEM. Some vehicles may exhibit difficulty starting in cold weather. This bulletin provides the procedure to perform an inspection on the starter magnetic switch for potential freezing and, if necessary, replace the starter magnetic switch \(solenoid\) assembly.
- [26\-BE\-010H DN](/bulletins/11031398.md), 2026-04-21, Warranty extension: UNKNOWN OR OTHER. Some vehicles may have an inoperable horn that may be caused by foreign substances causing internal parts to oxidize. Hyundai is extending the warranty coverage for the horn replacement under this condition to 10 years or 120,000 miles from the date of original retail delivery or date of first use \(whichever occurs first\) and is valid for original and subsequent owners. If a horn needs to be replaced, follow the instructions within this TSB to install the latest design. Please note that any vehicles under 10 years/120,000 miles are covered by this TSB, even if vehicle is within original warranty of 5 years/60,000 miles.
- [26\-BE\-010H TSB](/bulletins/11031397.md), 2026-04-21, Warranty extension: UNKNOWN OR OTHER. Some vehicles may have an inoperable horn that may be caused by foreign substances causing internal parts to oxidize. Hyundai is extending the warranty coverage for the horn replacement under this condition to 10 years or 120,000 miles from the date of original retail delivery or date of first use \(whichever occurs first\) and is valid for original and subsequent owners. If a horn needs to be replaced, follow the instructions within this TSB to install the latest design. Please note that any vehicles under 10 years/120,000 miles are covered by this TSB, even if vehicle is within original warranty of 5 years/60,000 miles.
- [TRW Settlement DCS](/bulletins/11027047.md), 2026-01-06, Other: AIR BAGS. A Class Action settlement regarding the TRW Airbag was recently decided. Based on the Class Action, customers are eligible for certain settlement benefits. Please see attached for details. Impacted vehicles are also noted below. For further information regarding settlement benefits and contacts, please review the dealer notification per the attached. It is also available on Hyundaidealer.com under Hyundai Tech Info \> Service News.
- [TRW Summary Notice](/bulletins/11027046.md), 2026-01-06, Other: AIR BAGS. A Class Action settlement regarding the TRW Airbag was recently decided. Based on the Class Action, customers are eligible for certain settlement benefits. Impacted vehicles are also noted below. For further information regarding settlement benefits and contacts, please review the corresponding dealer notification. It is available on Hyundaidealer.com under Hyundai Tech Info \> Service News.
- [TRW Settlement Notice](/bulletins/11027045.md), 2026-01-06, Other: AIR BAGS. Hyundai has settled a class action lawsuit that alleges that certain Hyundai and Kia Class Vehicles \(defined below\) contain defective ZF\-TRW airbag control units \(“ZF\-TRW ACUs”\) that are vulnerable to a condition called electrical overstress, which may cause the vehicles’ airbags and other safety features to fail during a collision. Hyundai has not been found liable for any claims alleged in the lawsuit. Instead, Hyundai reached a voluntary settlement \(referred as “the Settlement” or “the proposed Settlement”\) to avoid lengthy litigation and provide relief to people who own ed or leased Class Vehicles in the United States and U.S. Territories. Class Members may be entitled to compensation if they submit valid and timely Claims.
- [25\-EM\-007H TSB](/bulletins/11027036.md), 2026-01-06, Service bulletin: ENGINE. Some Elantra \(CN7, CN7A\), Kona \(OS, SX2\), and Sonata Hybrid \(DN8 HEV\) vehicles equipped with 2.0L engines may illuminate a warning lamp for DTC P218100 \(Cooling System Performance\) related to the Integrated Thermal\-Management Module \(ITM\). Follow the service procedure in this bulletin to install a spring onto the thermostat within the ITM, in order to prevent premature opening, and perform an ECU software update on affected vehicles.
- [25\-BD\-012H TSB](/bulletins/11025476.md), 2025-11-12, Service bulletin: EXTERIOR LIGHTING. This bulletin provides information regarding condensation related to the accumulated moisture in the headlamp, rear combination lamp, daytime running lamp \(DRL\), or fog lamp. This TSB illustrates the various causes of condensation inside the lamp assembly. Lamp assembly replacement is NOT necessary in most cases. This condition can be eliminated by turning on the lamps with the engine running for several minutes or during normal driving operation.
- [25\-BE\-020H TSB](/bulletins/11023692.md), 2025-10-03, Service bulletin: ELECTRICAL SYSTEM. This bulletin provides information related to the changes introduced in the 2025 1st Navigation Map and Software Update. The changes may vary depending on vehicle type, model, and navigation system as described in this TSB.
- [25\-01\-045H TSB](/bulletins/11020693.md), 2025-07-15, Service campaign: ELECTRICAL SYSTEM. A software update is available for multiple vehicles equipped with either Display Audio 2.0V or the AVN 5th Gen Wide system.
- [25\-BE\-002H TSB](/bulletins/11018876.md), 2025-06-03, Service bulletin: ELECTRICAL SYSTEM. This bulletin provides information related to the changes introduced in the 2024 2nd Navigation Map and Software Update. The changes may vary depending on vehicle type, model, and navigation system. Refer to the 2024 2nd Navigation Map and Software Update Improvements section in this TSB for a list of specific changes. The software can be downloaded via Navigation Updater \(NAU\) and updated by USB. The NAU website is https://update.hyundai.com/US/EN/navigationUpdate. For certain models equipped with a relevant Bluelink package, the software may be downloaded and applied via OTA update.
- [25\-01\-024H\-1 TSB](/bulletins/11018575.md), 2025-05-27, Service campaign: ELECTRICAL SYSTEM. Some vehicles may exhibit a loss of connectivity or interruptions in the middle of using Bluelink Service functions. This may be due to an irregular disconnection on Verizon’s communication network. Follow the procedure in this TSB to reestablish the connection via the AVN pinhole reset method.
- [25\-01\-024H EM](/bulletins/11017111.md), 2025-04-18, Service campaign: ELECTRICAL SYSTEM. Some vehicles may exhibit a loss of connectivity or interruptions in the middle of using Bluelink Service functions. This may be due to an irregular disconnection on Verizon's communication network. If you are experiencing issues with remote commands, or other Bluelink services, please see the instructions below to reestablish the connection via the AVN pinhole reset method.
- [25\-01\-024H TSB](/bulletins/11015936.md), 2025-03-25, Service campaign: ELECTRICAL SYSTEM. Some vehicles may exhibit a loss of connectivity or interruptions in the middle of using Bluelink Service functions. This may be due to an irregular disconnection on Verizon’s communication network. Follow the procedure in this TSB to reestablish the connection via the AVN pinhole reset method.
- [24\-BD\-011H](/bulletins/11008011.md), 2024-09-25, Service bulletin: STRUCTURE:BODY. Certain 2023MY Kona \(OS\) vehicles may have a detached pad between the rear spoiler and roof panel due to an error in the assembly process. Follow the procedure outlined in this TSB to replace the pad on the rear spoiler.

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