Hyundai warranty extension LA12
What it saysCertain Santa Cruz (NXT) vehicles equipped with 8-speed dual clutch transmissions (8DCT) may set one of the high pressure electric oil pump (HP EOP) DTCs listed below. NHTSA’s full summary ↓
Hyundai filed this with NHTSA as a warranty extension dated Mar 16, 2026, received Mar 30, 2026, about the power train — 1 document under this number: 26-01-028H. It names 3 model years (2022–2024). 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 Santa Cruz (NXT) vehicles equipped with 8-speed dual clutch transmissions (8DCT) may set one of the high pressure electric oil pump (HP EOP) DTCs listed below. This bulletin provides the service procedure to update the Transmission Control Unit (TCU) with improved logic to address these DTCs and enhance operation of the 8DCT.
One of the 432 warranty extensions and special-coverage programs on file — every make, with the term each runs to.
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| 26-01-028H | Warranty extension | Mar 16, 2026 | 11030324 | PDF, 434 KB |
What the document itself lists
The manufacturer titles it “TCU SOFTWARE UPDATE FOR 8DCT HIGH PRESSURE”.
Labour operation and the time the manufacturer allows
| Operation | Description | Time |
|---|---|---|
| 50DA50R0 | TCU Software Update | 0.5 hrs |
Read by machine from the document NHTSA serves (6 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 3 model years this bulletin names have filed 301 complaints with NHTSA since 2015. 127 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.
I was at a stop sign leave a store and I started going again and when I got to 15 mph it like it went into neutral and I thought maybe I hit shifter in neutral but didn't and I went to go again did same thing but then jump into next gear got cat home I bought this car brand new I only got 33000 miles
2024 Hyundai Santa Cruz · Power Train · filed with NHTSA Jan 28, 2026 · ODI 11713824
My new 2023 Santa Cruz lost power on freeway. The dealer performed a transmission software update; however, the issue was significantly worse after the upgrade, causing me to lose power again on a busy freeway. The vehicle was towed back to dealer. Today I was told the transmission needs replacement.
2023 Hyundai Santa Cruz · Power Train · filed with NHTSA Jul 6, 2023 · ODI 11530760
Was driving along and the truck said pull over immediately and the power train disengage . It slow down in a construction zone with no place to pull over and cars coming right at me .
2022 Hyundai Santa Cruz · Power Train · filed with NHTSA Jun 24, 2022 · ODI 11470796
In depth: 2022 Hyundai Santa Cruz transmission and drivetrain 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 power train
Source: same model, same component group11 other manufacturer communications filed against the Hyundai Santa Cruz 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-003H | Service bulletin | May 19, 2026 | Some Santa Fe (MX5A) and Santa Cruz (NXT) vehicles may exhibit a low idle or excessive vibration while in Drive or Reverse, or DTC P050600… |
| 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… |
| TEJ / TEJA | Service campaign | Oct 8, 2025 | Certain Santa Fe (MX5A) and Santa Cruz (NXT) vehicles equipped with 8-speed dual clutch transmissions (8DCT) may set one of the high pressur… |
| TEJA | Service campaign | Oct 7, 2025 | Certain Santa Cruz (NXT) vehicles equipped with 8-speed dual clutch transmissions (8DCT) may set one of the high pressure electric oil pump… |
| 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… |
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 LA12 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 LA12 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 LA12 cover?
The manufacturer filed it against 3 model years: 2024 Hyundai Santa Cruz, 2023 Hyundai Santa Cruz, 2022 Hyundai Santa Cruz. 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: 2022 - 2024 Santa Cruz (NXT) 8DCT: built 3 Jun 2021 – 19 Sep 2024 — the build date is on the certification label in the driver’s door jamb.