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August 11, 2026 Service bulletin

Vehicle-to-everything (V2X) software upgrade

Kia technical service bulletin TSB_ELE427 for 2025-2026 Kia EV9.

Bulletin number
TSB_ELE427
Component
Electrical system
Summary
TECHNICAL SERVICE BULLETIN: VEHICLE-TO-EVERYTHING (V2X) SOFTWARE UPGRADE - This bulletin provides information to install the Vehicle-to-Everything ‘V2X’ function enhancements by upgrading the software of the Central Communication Unit ‘CCU’ on certain 2025 - 2026MY EV9 (MV1a) vehicles produced at Kia Georgia (KaGA) that have been unable to be updated using the Over-The-Air ‘OTA’ method. The V2X technology allows EV9 vehicles to interact with other devices such as Vehicle-to-Home ‘V2H’ and Vehicle-to-Grid ‘V2G’ technology which enables bidirectional charging, where the EV's battery can be used as a mobile energy storage unit, providing power to the grid or a home backup power source.

Owners of these vehicles have filed 16 complaints in the electrical category.

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