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April 8, 2026 Service campaign

Loss of connectivity or interruptions in the middle of using Bluelink functions

Hyundai technical service bulletin 26-01-035H TSB for 2024-2026 Hyundai Sonata, 2024-2026 Hyundai Santa Fe and 2025-2026 Hyundai Tucson and others.

Bulletin number
26-01-035H TSB (9C0)
Component
Electrical system
Summary
Some vehicles may exhibit a loss of connectivity or interruptions in the middle of using Bluelink functions. This may be due to an occasional disconnection on Verizon’s communication network. Follow the procedures in this bulletin to verify Bluelink Data Communication Unit (DCU) network connection and if needed, reset the DCU in Dealer Mode to resolve the connection.

Owners of these vehicles have filed 643 complaints in the electrical category.

Vehicles covered

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