Hyundai Tucson Hybrid 2025 — service campaign
Bulletin 25-01-068H-1 · NHTSA communication 11025953 · issued Nov 20, 2025
Service campaign
communication type
Engine
component
2025
model years
2
vehicle entries
Official summary
Certain Tucson Hybrid (NX4 HEV) and Tucson Plug-in Hybrid (NX4 PHEV) vehicles may exhibit a condition where the Oil Pump Unit (OPU) prevents the Ready Lamp from turning on. Some vehicles may also display DTC U100787 (malfunction on CAN communication). This bulletin provides instructions to perform a software update for the Powertrain Control Unit (PCU).
Vehicles covered
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.