Hyundai Tucson 2022–2023 — technical service bulletin
Bulletin 23-EE-002H · NHTSA communication 10233539 · issued Mar 13, 2023
Technical service bulletin
communication type
Electrical System
component
2022–2023
model years
2
vehicle entries
Official summary
This bulletin provides information related to the Engine Control Module (ECM) / Hybrid Control Unit (HCU) software update for Tucson Hybrid (NX4 HEV) / Plug-in Hybrid (NX4 PHEV) vehicles to improve the following DTC and symptoms:
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.