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September 7, 2023 Service bulletin

This bulletin provides the procedure to update the Hybrid Control Unit (HCU) / Low DC/DC Converter (LDC)...

Hyundai technical service bulletin 23-01-072H for 2019-2021 Hyundai Ioniq Hybrid.

Bulletin number
23-01-072H
Component
Electrical system: software
Summary
This bulletin provides the procedure to update the Hybrid Control Unit (HCU) / Low DC/DC Converter (LDC) software logic to eliminate internal P-DTCs (that are not viewable) in certain 2019-2021MY IONIQ Hybrid (AE HEV) and 2021MY IONIQ Plug-in Hybrid (AE PHEV) vehicles.

Owners of these vehicles have filed 17 complaints in the electrical category.

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