This bulletin provides information related to the Hybrid Control Unit (HCU) software update for Santa Fe...
Hyundai technical service bulletin 23-EE-004H for 2021-2023 Hyundai Santa Fe Plug-In Hybrid.
- Bulletin number
- 23-EE-004H
- Component
- Power train
- Summary
- This bulletin provides information related to the Hybrid Control Unit (HCU) software update for Santa Fe Plug-in Hybrid (TM PHEV) vehicles to improve the following symptom: 1. Oil Dilution: Some vehicles may experience increased oil consumption and white smoke due to the diluting of engine oil with fuel because of the frequent transition between EV ↔ Engine mode during the winter season a. Modify fuel injection strategy below 10℃ and add oil heating function based on the driving pattern.
Owners of these vehicles have filed 7 complaints in the transmission category.
Vehicles covered
- Hyundai Santa Fe Plug-In Hybrid 2021-2023 202120222023
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