Hyundai bulletin 26-EM-017H
What it saysCertain Palisade (LX2) and Santa Fe (NC) vehicles equipped with Lambda II 6-cylinder engines may exhibit higher-than-expected engine oil consumption. NHTSA’s full summary ↓
Hyundai filed this with NHTSA as a service bulletin dated Oct 8, 2026, received Oct 9, 2026, about the engine — 1 document under this number: 26-EM-017H TSB. It names 10 model years (2016–2025). A service bulletin is not a safety recall: it is the manufacturer telling its dealers how to diagnose or repair a condition, and whether the work is paid for depends on the warranty in force. Quoting the number at a service desk can save a diagnosis.
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What the bulletin says
Source: NHTSA's summary of the manufacturer's communicationCertain Palisade (LX2) and Santa Fe (NC) vehicles equipped with Lambda II 6-cylinder engines may exhibit higher-than-expected engine oil consumption. This bulletin outlines the combustion chamber cleaning procedure for vehicles diagnosed with this condition. All internal combustion engines consume some engine oil during normal operation, depending on driving conditions and mileage, and this procedure should only be performed when deemed necessary based on inspection and diagnosis of the vehicle as outlined in TSB 26-EM-015H, Engine Oil Consumption – Inspection & Repair Guidelines, or the latest revision.
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| 26-EM-017H TSB | Service bulletin | Oct 8, 2026 | 11038430 | PDF, 3,014 KB |
The summary is NHTSA’s abstract of the document, as filed under 49 CFR 579.5. One communication is usually filed as several documents — the bulletin, a dealer notice, an owner letter — and the number on any of them finds this page. A PDF link is shown only once NHTSA’s own server has been seen to serve that document; the rest are checked over the following nights. Quote the number at a service desk; it is what the dealer’s system is keyed on.
Model years it names
Source: as the manufacturer filed themA vehicle page’s bulletin list shows the newest few communications filed against that model year; the count there is every one.
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What owners reported
Source: NHTSA complaint databaseOwners of the 10 model years this bulletin names have filed 4,656 complaints with NHTSA since 2015. 1,708 of them name Engine — the same broad component group this bulletin is filed under. NHTSA groups complaints coarsely, so that means the same area of the vehicle, not necessarily the same fault.
On the 2017 Hyundai Santa Fe, the 212 owners who gave an odometer reading for Engine reported it at a median of 72,000 miles. That figure is one model year’s, not the whole range this bulletin covers — medians from different model years are not averaged.
A recall letter from Hyundai on my 2018 Santa Fe on a knock sensor took it to my dealership they did what ever the recall was 3 miles down the road my car went intp limp mode took me from 70mph to 30 call the dealer had to limp it back they hah it for 3 weeks had the wire harness replaced asked they had any trouble with this as we were…
2018 Hyundai Santa Fe · Engine · filed with NHTSA Jul 19, 2019 · ODI 11233455
The engie restarted itself after being shut off and no key was near vehicle and continued to run overnight, filing car with carbon monoxide. Hyundai service department was contacted and said no inspection was need but to monitor car and contact Hyundai customer line and advise. The reference case number is 20244323
2022 Hyundai Palisade · Engine · filed with NHTSA Aug 30, 2022 · ODI 11481948
On September 22, 2026, my 2019 Hyundai Santa Fe XL experienced a sudden engine stall while I was stopped at a traffic light. The engine unexpectedly lost power, the steering wheel became extremely difficult to turn and appeared to lock, and the oil pressure, battery, and check engine warning lights illuminated.
2019 Hyundai Santa Fe · Engine · filed with NHTSA Oct 19, 2026 · ODI 11772079
In depth: 2022 Hyundai Palisade engine problems → · 2021 Hyundai Palisade engine problems → · 2020 Hyundai Palisade engine problems → · 2019 Hyundai Santa Fe engine problems →
A complaint is one owner’s account, not a defect finding, and a bulletin is not a recall. Nothing here says this bulletin was issued because of these complaints, or that the repair it describes fixed them. Complaint files on this site begin in 2015.
More bulletins about the engine
Source: same model, same component group28 other manufacturer communications filed against these Hyundai models under the same component group (engine), newest first. The eight newest are listed; the rest are on the Hyundai list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| 9C7 | Service campaign | Oct 9, 2026 | Certain Santa Fe Hybrid (TM HEV), Santa Fe Plug-in Hybrid (TM PHEV), Tucson Hybrid (NX4 HEV), and Tucson Plug-in Hybrid (NX4 PHEV) vehicles… |
| 26-EM-016H | Service bulletin | Oct 8, 2026 | Some vehicles equipped with internal combustion engines may exhibit higher-than-expected engine oil consumption. This bulletin outlines the… |
| 26-EM-015H | Service bulletin | Oct 7, 2026 | Certain vehicles equipped with internal combustion engines may exhibit higher-than-expected engine oil consumption. This bulletin provides t… |
| LA13 | Warranty extension | Aug 11, 2026 | Certain Palisade (LX3) and Palisade Hybrid (LX3 HEV) vehicles may exhibit a “Check Active Air Flap System" warning message, Engine MIL ON, a… |
| 9D6 | Service campaign | Aug 6, 2026 | Certain Palisade (LX3) vehicles may exhibit an engine misfire condition which may result in one or more of the DTCs listed below. This updat… |
| Z15 | Warranty extension | Aug 3, 2026 | Some Palisade (LX2) vehicles may exhibit engine oil leakage at the engine oil filter housing assembly due to deterioration of the housing se… |
| 26-EC-001H | Service bulletin | Jul 30, 2026 | Some Palisade Hybrid (LX3 HEV) vehicles may exhibit continuous engine operation due to the vehicle being unable to enter EV/HEV modes. The v… |
| 9C2 | Service campaign | May 21, 2026 | Certain 2019 – 2020 model year Santa Fe, 2017 – 2018 model year Santa Fe Sport, 2015 – 2019 model year Sonata, and 2018 – 2021 model year Tu… |
Quote the number at the service desk. It is what the dealer’s system is keyed on.
Every manufacturer communication NHTSA holds for Hyundai, by the number printed on the letter.
Common questions
Source: NHTSA, 49 CFR 579.5Is Hyundai 26-EM-017H a recall?
No. A service bulletin is a manufacturer communication filed with NHTSA under 49 CFR 579.5; a safety recall carries an NHTSA campaign number (two digits, a letter, six digits) and a federal duty to repair for free. Check the vehicle’s recalls by VIN at nhtsa.gov/recalls, or on its page here.
Is the 26-EM-017H repair free?
Not automatically. A service bulletin describes how to diagnose or repair a condition; who pays depends on the warranty in force, any extension, and the dealer. Quoting the number can save a diagnosis either way. Every Hyundai warranty extension on file lists the ones Hyundai has filed.
Which vehicles does 26-EM-017H cover?
The manufacturer filed it against 10 model years: 2025 Hyundai Palisade, 2024 Hyundai Palisade, 2023 Hyundai Palisade, 2022 Hyundai Palisade, 2021 Hyundai Palisade, 2020 Hyundai Palisade and more. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.