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October 22, 2026 Over-the-air update

Release notes: over-the-air: service action: software update for bdc and uwb (SA663)

Kia technical service bulletin SA663_OTA_RELEASE_NOTES for 2025-2027 Kia Carnival and 2025-2027 Kia Carnival Hybrid.

Bulletin number
SA663_OTA_RELEASE_NOTES (SA663)
Component
Electrical system
Summary
RELEASE NOTES: OVER-THE-AIR: SERVICE ACTION: SOFTWARE UPDATE FOR BDC AND UWB (SA663) - This Over-the-Air (OTA) software update is designed to update the Ultra-Wideband (UWB) logic of certain 2025-2027 Carnival and Carnival Hybrid vehicles. The connection and controller logic between Digital Key and Ultra Wideband-supported smartphone devices has been improved to reduce 12V battery consumption.

Owners of these vehicles have filed 131 complaints in the electrical category.

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