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January 20, 2026 Service bulletin

This document will walk the user through correcting the battery State of Charge (SOC) calibration

International technical service bulletin IK2300038 for 2021-2025 International Emv and 2022-2025 Ic Bus Evsb.

Bulletin number
IK2300038
Component
Electrical system
Summary
This document will walk the user through correcting the battery State of Charge (SOC) calibration. It has been found on some electric vehicles that the SOC calibration can become incorrect over time. Often times this is from the vehicle sitting a long period without use or charging the batteries. This will result in the SOC value on the cluster becoming inaccurate compared to the SOC value in the battery packs. This may also result in a low value for the vehicle range estimate on the EGC.

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