Hyundai bulletin 23-01-046H
What it saysCertain 2022MY Santa Fe (TMa) 2.5L vehicles equipped with an 8-speed transmission will require an update to the ECU and TCU software to correct the ROM IDs and TCU software to optimize shift quality when accelerating. NHTSA’s full summary ↓
Hyundai filed this with NHTSA as a service bulletin dated Jun 2, 2023, received Jun 3, 2023, about the power train — 3 documents under this number. It names 1 model year (2022). 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 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 2022MY Santa Fe (TMa) 2.5L vehicles equipped with an 8-speed transmission will require an update to the ECU and TCU software to correct the ROM IDs and TCU software to optimize shift quality when accelerating.
Documents filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| 23-01-046H | Service bulletin | Jun 2, 2023 | 10238347 | PDF, 791 KB |
| 23-01-046H | Service bulletin | May 25, 2023 | 10237192 | PDF, 742 KB |
| 23-01-046H | Service bulletin | May 25, 2023 | 10237191 | PDF, 405 KB |
What the document itself lists
The manufacturer titles it “ECU/TCU UPDATE - DRIVABILITY (SERVICE CAMPAIGN 981)”.
Parts the bulletin names
| Part number | Description | Qty | Find it |
|---|---|---|---|
| 00305-SC981 | Campaign Sticker | 1 | eBay Motors → |
| 39110-2S093 | — | — | |
| 39110-2S275 | — | — |
Read by machine from the document NHTSA serves (5 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. Listings and prices on eBay Motors are the seller’s.
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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 267 complaints with NHTSA since 2015. 149 of them name Power Train, 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.
The car was shaking alot but the engine light was off. Started it the next dat and the check engine light came on. Went to auto zone to see what the codes were. The 1st and 3rd cylinder are misfiring. The car was just serviced for the 60,000 mile tune up in june 2026. This problem started August 14, 2026.
2022 Hyundai Santa Fe · Power Train · filed with NHTSA Aug 16, 2026 · ODI 11757272
2022 Hyundai Santa Fe Plug-in Hybrid, confirming the exact symptom “the gasoline engine continues running after the vehicle is switched off.” the vehicle is on and your burn fuel and if the fuel tank is full then some major issue may occur
2022 Hyundai Santa Fe · Engine · filed with NHTSA Aug 6, 2026 · ODI 11755321
In depth: 2022 Hyundai Santa Fe transmission and drivetrain problems → · 2022 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 power train
Source: same model, same component group23 other manufacturer communications filed against the Hyundai Santa Fe 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 |
|---|---|---|---|
| 999A | Warranty extension | Aug 27, 2026 | Certain Santa Fe Hybrid (MX5A HEV) vehicles may experience a condition where a DTC triggered in the Hybrid Power Control Unit (HPCU) cannot… |
| 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… |
| 26-AT-002H | Service bulletin | Feb 21, 2026 | Some Santa Fe (TMA) and Tucson (NX4A) vehicles equipped with a 2.5L GDI engine and 8 speed automatic transmission may have DTC U028700… |
| TEJ | Service campaign | Oct 24, 2025 | Hyundai Motor America is currently investigating an ongoing concern with software GDS event #1306 for certain Hyundai Santa Fe (MX5A) vehicl… |
| 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… |
| 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… |
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 23-01-046H 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 23-01-046H 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 23-01-046H cover?
The manufacturer filed it against 1 model year: 2022 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: built on or after 10 Jun 2021 — the build date is on the certification label in the driver’s door jamb.