TSB 26-01-026H-1 — Hyundai Warranty extension
26-01-026H-1 is a warranty extension on file with NHTSA for the Hyundai Palisade, 2026 model years, filed and re-filed as 2 documents. A TSB is factory repair guidance, not a recall — the repair is not automatically free.
What the bulletin says. Certain Palisade (LX3) and Palisade Hybrid (LX3 HEV) vehicles may exhibit a “Check Active Air Flap System" warning message, Engine MIL ON, and/or “Low Engine Oil" warning message, due to improper operation of the Active Air Flap (AAF) system. DTCs include, but are not limited…
NHTSA's own summary of the document, quoted from the public manufacturer-communications file.
Worth checking your VIN against. 26-01-026H-1 is filed as a warranty extension, 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 26-01-026H-1 names
| Vehicle | Model years |
|---|---|
| Hyundai Palisade | 2026 |
Every document filed under 26-01-026H-1
Manufacturers re-issue a bulletin as the repair changes, and file separate copies for technicians and for owners. All of them carry the same number.
| Document ID | Filed | Type |
|---|---|---|
| 26-01-026H-1 WebDCS | August 11, 2026 | Warranty extension |
| 26-01-026H-1 TSB | August 7, 2026 | Warranty extension |
What 26-01-026H-1 covers
Engine — the component vocabulary NHTSA files this communication under.
Questions buyers ask
What is TSB 26-01-026H-1?
26-01-026H-1 is a warranty extension filed with NHTSA by Hyundai, covering the Hyundai Palisade across the 2026 model years. NHTSA's summary reads: Certain Palisade (LX3) and Palisade Hybrid (LX3 HEV) vehicles may exhibit a “Check Active Air Flap System" warning message, Engine MIL ON, and/or “Low Engine Oil" warning message, due to improper operation of the Active Air Flap (AAF) system. DTCs include, but are not limited…
Which vehicles does 26-01-026H-1 cover?
NHTSA's file names Hyundai Palisade (2026). 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 26-01-026H-1 a recall, and is the repair free?
26-01-026H-1 is filed as a warranty extension, 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 26-01-026H-1?
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 26-01-026H-1, 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 26-01-026H-1. Check any specific vehicle's open recalls by VIN at nhtsa.gov/recalls.