TSB DCS-260518 — Hyundai Service campaign
DCS-260518 is a service campaign on file with NHTSA for 3 Hyundai models, 2015–2021 model years. A TSB is factory repair guidance, not a recall — the repair is not automatically free.
What the bulletin says. 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…
NHTSA's own summary of the document, quoted from the public manufacturer-communications file.
Worth checking your VIN against. DCS-260518 is filed as a service campaign, which unlike an ordinary bulletin can mean free or reimbursed work when a vehicle qualifies. Ask a dealer using the document ID below, and check open recalls separately at nhtsa.gov/recalls.
Vehicles and model years DCS-260518 names
| Vehicle | Model years |
|---|---|
| Hyundai Santa Fe | 2017, 2018, 2019, 2020 |
| Hyundai Sonata | 2015, 2016, 2017, 2018, 2019 |
| Hyundai Tucson | 2018, 2019, 2020, 2021 |
Every document filed under DCS-260518
| Document ID | Filed | Type |
|---|---|---|
| 9C2 DCS 260518 | May 19, 2026 | Service campaign |
What DCS-260518 covers
Electrical, Engine — the component vocabulary NHTSA files this communication under.
Questions buyers ask
What is TSB DCS-260518?
DCS-260518 is a service campaign filed with NHTSA by Hyundai, covering 3 Hyundai models across the 2015–2021 model years. NHTSA's summary reads: 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…
Which vehicles does DCS-260518 cover?
NHTSA's file names Hyundai Santa Fe (2017–2020); Hyundai Sonata (2015–2019); Hyundai Tucson (2018–2021). A bulletin number can be re-issued against more vehicles later, so check the model-year list on this page against your own.
Is TSB DCS-260518 a recall, and is the repair free?
DCS-260518 is filed as a service campaign, not a recall — but this is the kind of communication that can mean free or reimbursed work if your VIN qualifies. Take the number to a dealer and ask. Recalls are separate and always free; check yours by VIN at nhtsa.gov/recalls.
How do I get the full text of DCS-260518?
Take the document ID to a dealer's service desk, or search NHTSA's manufacturer-communications records. This page carries every document ID filed under DCS-260518, its date, and NHTSA's own summary from the public file.
Every number on this page is a count of records in the federal complaint, recall, and investigation files published by NHTSA's Office of Defects Investigation. This page lists only what NHTSA's manufacturer-communications file records under DCS-260518. Check any specific vehicle's open recalls by VIN at nhtsa.gov/recalls.