Hyundai warranty extension LA15
What it saysCertain Sonata (DN8) vehicles may exhibit a transmission oil leak at the bottom of the valve body cover due to a loose oil level plug that could potentially lead to a total failure of the automatic transmission. NHTSA’s full summary ↓
Hyundai filed this with NHTSA as a warranty extension dated Jul 27, 2026, received Aug 11, 2026, about the power train — 2 documents under this number: 26-01-060H TSB, 26-01-060H WebDCS. It names 2 model years (2025–2026). A warranty extension is not a safety recall — there is no NHTSA campaign number and no federal requirement — but it is usually work the manufacturer pays for on the vehicles it names; the dealer checks the VIN against the manufacturer’s list.
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What the bulletin says
Source: NHTSA's summary of the manufacturer's communicationWhat it applies to, as the document itself states it — the build window in the manufacturer’s own words, read by machine from the PDF NHTSA serves. The build date is on the certification label in the driver’s door jamb; the dealer settles a borderline vehicle by its VIN.
Certain Sonata (DN8) vehicles may exhibit a transmission oil leak at the bottom of the valve body cover due to a loose oil level plug that could potentially lead to a total failure of the automatic transmission. Technical Service Bulletin (TSB) 26-01-060H instructions to inspect the oil level plug and transmission oil level and, if necessary, replace the automatic transmission.
One of the 432 warranty extensions and special-coverage programs on file — every make, with the term each runs to.
Documents filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| 26-01-060H TSB | Warranty extension | Jul 27, 2026 | 11036095 | |
| 26-01-060H WebDCS | Warranty extension | Jul 27, 2026 | 11036093 |
What the document itself lists
The manufacturer titles it “LOOSE TRANSMISSION OIL LEVEL PLUG – AUTOMATIC TRANSMISSION”.
Parts the bulletin names
| Part number | Description | Qty |
|---|---|---|
| 45000-4GGM0 | — | — |
| 45000-4GGM0QQH | — | — |
| 45000-4GGN0 | — | — |
| 45000-4GGN0QQH | — | — |
| 45000-4GGN5 | Gasket-Oil | — |
| 45000-4GGN5QQH | Gasket-Oil | — |
| 45285-4G800 | Level Plug | 1 |
| 45285-4G800QQH | Level Plug | 1 |
| 45284-4G800 | Bolt Assy-Eye | 1 |
| 45284-4G800QQH | Bolt Assy-Eye | 1 |
| 55259-2M000 | Tie Rod End Nut | 2 |
| 57799-4D200 | — | 2 |
| 56415-L1000 | Bolt (Steering Shaft) | 1 |
| 21991-3R000 | CASTLE-NUT | 1 |
| 49551-4T000 | Automatic | 2 |
| 00232-19107 | quart | — |
| 09200-3N000 | Fixture | — |
| 09200-2W000 | Adapter | — |
| 09200-L1100 | Adapter (Rear) | — |
| 09200-L1200 | Adapter (Front) | — |
| 09568-2J100 | Ball Joint Tool | — |
| 09568-4R100 | — | — |
Read by machine from the document NHTSA serves (15 pages), read Sep 30, 2026. A part number is shown only where it matches Hyundai’s own catalogue shape, an operation only with its code and time, and a description only where the reader got it whole; anything it could not settle is left out, and the PDF is the record. Times are the manufacturer’s warranty allowances, not a quote.
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 2 model years this bulletin names have filed 34 complaints with NHTSA since 2015. 4 of them name Power Train — 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.
The contact owns a 2025 Hyundai Sonata. The contact stated that while the accelerator was depressed, the vehicle hesitated, jerked, and failed to accelerate as intended. The failure occurred while driving from a stop and while driving at various speeds, causing the vehicle to decelerate during the failure.
2025 Hyundai Sonata · Power Train · filed with NHTSA Aug 17, 2026 · ODI 11757370
The contact owns a 2026 Hyundai Sonata. The contact stated that while the vehicle door was open, the vehicle shifted into reverse and accelerated in reverse at 30 MPH. The vehicle traveled into a wooded area and the rear of the vehicle struck a tree.
2026 Hyundai Sonata · Power Train · filed with NHTSA Aug 28, 2026 · ODI 11760447
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 power train
Source: same model, same component group15 other manufacturer communications filed against the Hyundai Sonata under the same component group (power train), newest first. The eight newest are listed; the rest are on the Hyundai list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| 26-AT-005H | Service bulletin | Jun 5, 2026 | This bulletin provides information related to a Transmission Control Unit (TCU) software update for some vehicles equipped with an 8-speed w… |
| 26-AT-001H | Service bulletin | Mar 3, 2026 | Some Santa Cruz (NXT), Santa Fe (TMA, MX5A), and Sonata (DN8A) models may require replacement of the 8-speed wet dual clutch transmission… |
| 25-AT-001H | Service bulletin | May 30, 2025 | Certain Santa Fe (TMA) and Sonata (DN8/DN8A) vehicles equipped with 8-speed dual clutch transmissions (8DCT) may exhibit one of the DTCs lis… |
| 24-AT-001H-1 | Service bulletin | Dec 18, 2024 | This bulletin provides the procedure for updating the automatic transmission TCU (Transmission Control Unit) software to improve shift quali… |
| 24-AT-002H | Service bulletin | Apr 9, 2024 | This TSB provides a procedure to diagnose and replace, if necessary, an automatic transmission with Incorrect Ratio DTC… |
| 24-AT-001H | Service bulletin | Feb 28, 2024 | This bulletin provides the procedure for updating the automatic transmission TCU and ECU software (Santa Fe ONLY) to improve shift quality… |
| 23-AT-006H-2 | Service bulletin | Nov 10, 2023 | This TSB provides information to diagnose the push button shifter operation. |
| 23-AT-008H-1 | Service bulletin | Sep 14, 2023 | If you are servicing an 8-speed front-wheel-drive vehicle equipped with automatic transaxle with one or more of the DTC or symptoms listed b… |
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 LA15 a recall?
No. A warranty extension 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 LA15 repair free?
A warranty extension is usually paid by the manufacturer on the vehicles it names, within the terms and time limit the document sets; the dealer checks the VIN against the manufacturer’s list.
Which vehicles does LA15 cover?
The manufacturer filed it against 2 model years: 2026 Hyundai Sonata, 2025 Hyundai Sonata. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone. The document itself sets the build window: 2025 – 2026 Sonata (DN8) 2.5L: built 4 Feb 2025 – 17 Jul 2025 — the build date is on the certification label in the driver’s door jamb.