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July 27, 2026 Warranty extension

Certain Sonata (DN8) vehicles may exhibit a transmission oil leak at the bottom of the valve body cover...

Hyundai technical service bulletin 26-01-060H WebDCS for 2025-2026 Hyundai Sonata.

Bulletin number
26-01-060H WebDCS (LA15)
Component
Power train
Summary
Certain Sonata (DN8) vehicles may exhibit a transmission oil leak at the bottom of the valve body cover due to a loose oil level plug that could potentially lead to a total failure of the automatic transmission. Technical Service Bulletin (TSB) 26-01-060H instructions to inspect the oil level plug and transmission oil level and, if necessary, replace the automatic transmission.

Owners of these vehicles have filed 3 complaints in the transmission category.

Vehicles covered

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