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Hyundai TSB #23-01-093H

2020 Hyundai Sonata Hybrid

TSB Document:

MC-10247604-0001.pdf

Affected Component: ELECTRICAL SYSTEM

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).

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Date Published: DEC 15, 2023
NHTSA TSB #: 10247604

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