Certain Tucson (NX4A) vehicles may exhibit a Data Communication Unit (DCU) software error due to the...
Hyundai technical service bulletin 25-01-061H TSB for 2025-2026 Hyundai Tucson.
- Bulletin number
- 25-01-061H TSB (TDFC)
- Component
- Electrical system
- Summary
- Certain Tucson (NX4A) vehicles may exhibit a Data Communication Unit (DCU) software error due to the internal timer initialization logic not being implemented. The DCU module may shut down telematics services after one year. This bulletin provides instructions to perform a software update for the DCU module.
Owners of these vehicles have filed 78 complaints in the electrical category.
Vehicles covered
- Hyundai Tucson 2025-2026 20252026
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