Hyundai Kona 2024–2025 — service campaign
Bulletin 25-01-043H TSB · NHTSA communication 11021865 · issued Aug 8, 2025
Service campaign
communication type
Exterior Lighting
component
2024–2025
model years
2
vehicle entries
Official summary
Some Kona (SX2) vehicles may experience battery drain due to faulty logic keeping the taillights illuminated while the vehicle is parked and turned off. Follow the procedures outlined in this TSB to update the Body Domain Controller (BDC) to the latest software.
Vehicles covered
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.