Hyundai Santa FE 2019–2021 — service campaign
Bulletin 25-01-087H DCS · NHTSA communication 11025965 · issued Nov 26, 2025
Service campaign
communication type
Engine
component
2019–2021
model years
6
vehicle entries
Official summary
Certain Santa Fe (TMA), Sonata (LFA) and Tucson (TL) vehicles equipped with Theta II engines may exhibit elevated engine-out emissions. Technical Service Bulletin (TSB) 25-01-087H provides instructions for updating the Engine Control Module (ECM) to address this condition.
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.