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January 23, 2026 Service bulletin

BMS discharge logic improvement

Kia technical service bulletin TSB_ELE399_R1 for 2023-2024 Kia Sportage Hybrid.

Bulletin number
TSB_ELE399_R1
Component
Fuel/propulsion system
Summary
TECHNICAL SERVICE BULLETIN: BMS DISCHARGE LOGIC IMPROVEMENT - This bulletin has been revised to include additional information. New/revised sections of this bulletin are indicated by a black bar in the margin area. This bulletin provides information to upgrade the ‘BMS’ system software on certain 2023-2024MY Sportage HEV (NQ5 HEV) vehicles produced from February 15, 2022, through December 15, 2023, which may experience excessive discharging of the 12V lithium battery while parked, potentially resulting in a no-start condition.

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

Vehicles covered

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