Hyundai Santa FE 2015–2021 — service campaign
Bulletin 9C2 DCS 260518 · NHTSA communication 11033701 · issued May 19, 2026
Service campaign
communication type
Electrical System
component
2015–2021
model years
13
vehicle entries
Official summary
Following completion of Service Campaign 9C2 (Theta II Emissions Improvement), certain vehicles may exhibit a brief hesitation or rough shifting condition during cold start operation. If present, this condition is expected to occur only within approximately the first 1-3 minutes after engine start, while the catalyst is reaching its normal operating temperature.
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.