Service bulletins for the 2021 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.
88 on file from NHTSA, as of 2026-10-19.
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Only bulletins with component: Fuel system are shown. Show all
| 9C5 OL | 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. |
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| 26-01-065H DCS | 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 | 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 | 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. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.