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August 25, 2023 Service bulletin

This bulletin provides information related to the Engine Control Module (ECM) software update and coolant...

Hyundai technical service bulletin 23-HC-002H for 2020-2023 Hyundai Sonata Hybrid.

Bulletin number
23-HC-002H
Component
Power train
Summary
This bulletin provides information related to the Engine Control Module (ECM) software update and coolant replacement for 2020-2023MY Sonata Hybrid (DN8 HEV) vehicles to improve the coolant filling mode by discharging air bubbles.

Owners of these vehicles have filed 9 complaints in the transmission category.

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