This bulletin provides the procedure to update the Hybrid Control Unit (HCU) and Dual Automatic...
Hyundai technical service bulletin 23-01-093H for 2020-2023 Hyundai Sonata Hybrid.
- Bulletin number
- 23-01-093H
- Component
- Engine and engine cooling
- Summary
- This bulletin provides the procedure to update the Hybrid Control Unit (HCU) and Dual Automatic Temperature Control (DATC) software to help improve coolant flow to the Exhaust Heat Recovery System (EHRS).
Owners of these vehicles have filed 41 complaints in the engine category.
Vehicles covered
- Hyundai Sonata Hybrid 2020-2023 2020202120222023
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