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Hyundai TSB #23-EM-009H
2021 Hyundai Sonata Hybrid
TSB Document:
Affected Component: POWER TRAIN
- Summary
- Certain 2020-2023MY Sonata Hybrid (DN8 HEV) vehicles may exhibit coolant leakage, engine overheating, and white smoke from the exhaust due to an internal leak at the Exhaust Heat Recovery System (EHRS) portion of the center muffler assembly. Follow the procedure outlined in this bulletin to repair this condition after confirming EHRS is leaking internally.
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