Hyundai service campaign LA1A
What it saysCertain Santa Fe Hybrid (MX5A HEV) vehicles may experience battery drain and inoperative heated seat capacitive touch buttons due to incorrect ECU logic for the Seat Heater Unit – Front (SHU_FRT). NHTSA’s full summary ↓
Hyundai filed this with NHTSA as a service campaign dated Nov 12, 2025, received Nov 18, 2025, about the seats — 1 document under this number: 25-01-028H-1 TSB. It names 1 model year (2026). A service campaign 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 Fe Hybrid (MX5A HEV) vehicles may experience battery drain and inoperative heated seat capacitive touch buttons due to incorrect ECU logic for the Seat Heater Unit – Front (SHU_FRT). This bulletin provides instructions to perform a software update for the Seat Heater Unit – Front to correct the logic.
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| 25-01-028H-1 TSB | Service campaign | Nov 12, 2025 | 11025591 | PDF, 520 KB |
What the document itself lists
The manufacturer titles it “SEAT HEATER UNIT (SHU) SOFTWARE UPDATE”.
Labour operation and the time the manufacturer allows
| Operation | Description | Time |
|---|---|---|
| 50DA45R0 | Seat Heater Unit (SHU) Software Update | 0.3 hrs |
Read by machine from the document NHTSA serves (7 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 1 model year this bulletin names have filed 58 complaints with NHTSA since 2015. 5 of them name Seats — 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.
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 seats
Source: same model, same component group8 other manufacturer communications filed against the Hyundai Santa Fe under the same component group (seats), newest first.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| 26-BD-005H | Service bulletin | Aug 28, 2026 | Some Santa Fe Hybrid (MX5A HEV) vehicles may have walk-in switches that are not fully secured. This bulletin provides instructions to trim t… |
| 26-BD-008H | Service bulletin | Aug 18, 2026 | Some Santa Fe (MX5A) and Santa Fe Hybrid (MX5A HEV) vehicles equipped with natural leather or Nappa leather seating surfaces may exhibit wri… |
| 26-BE-015H | Service bulletin | Jun 2, 2026 | Some Santa Fe (MX5A) and Santa Fe Hybrid (MX5A HEV) vehicles equipped with power seats with or without Integrated Memory System (IMS) may pr… |
| 26-BD-001H | Service bulletin | Mar 13, 2026 | Some Santa Fe (MX5A) and Santa Fe Hybrid (MX5A HEV) vehicles equipped with 2nd row captain’s chairs have an armrest cap that may detach. Thi… |
| LA1, LA1A | Service campaign | Nov 13, 2025 | Certain Santa Fe (MX5A) and Santa Fe Hybrid (MX5A HEV) vehicles may experience battery drain and inoperative heated seat capacitive touch bu… |
| LA1 | Service campaign | Nov 12, 2025 | Certain Santa Fe (MX5A) vehicles may experience battery drain and inoperative heated seat capacitive touch buttons due to incorrect ECU logi… |
| TCVA | Service campaign | Apr 23, 2025 | Certain Santa Fe Hybrid (MX5A HEV) vehicles may experience battery drain due to incorrect ECU logic for the Seat Heater Unit – Front… |
| TCV | Service campaign | Mar 22, 2025 | Certain Santa Fe (MX5A) vehicles may experience battery drain due to incorrect ECU logic for the Seat Heater Unit – Front (SHU_FRT). This bu… |
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 LA1A a recall?
No. A service campaign 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 LA1A repair free?
A service campaign 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 LA1A cover?
The manufacturer filed it against 1 model year: 2026 Hyundai Santa Fe. 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: 2024 – 2026 Santa Fe Hybrid (MX5A HEV): built 6 Mar 2024 – 11 Jul 2025 — the build date is on the certification label in the driver’s door jamb.