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Hyundai TSB #23-01-073H-1
2021 Hyundai Kona Electric
TSB Document:
Affected Component: POWER TRAIN
- Summary
- Certain 19-23MY Kona Electric (OS EV) vehicles may experience a condition of EV warning light ON with DTC P1AA6 to P1AAF found stored. The Battery Management System (BMS) software update will be performed to enhance battery diagnostics logic. Flowchart summary of the service procedure is provided on page 2 summarized as follows: ⢠Vehicles that do not have EV Warning Light On will only need the BMS software update. ⢠Certain vehicles incurring EV Warning Light On and DTC P1AA6 found stored with Freeze Frame Data Information Code 1=128 will only require the BMS Update. ⢠Certain other DTC P1AA6 Information Code 1-2 values or DTC P1AA7 to P1AAF will require the Battery System Assembly (BSA) to be replaced and then the BMS Update to be performed.
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