Hyundai bulletin 24-AT-002H
What it saysThis TSB provides a procedure to diagnose and replace, if necessary, an automatic transmission with Incorrect Ratio DTC (transmission clutch slip in gear above limit) listed on Page 2. NHTSA’s full summary ↓
Hyundai filed this with NHTSA as a service bulletin dated Apr 9, 2024, received Apr 16, 2024, about the power train. It names 47 model years (2016–2024). 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.
Get the next Hyundai bulletin for your model by email Weekly, only when something new is filed. Nothing else; one-click unsubscribe.
What the bulletin says
Source: NHTSA's summary of the manufacturer's communicationThis TSB provides a procedure to diagnose and replace, if necessary, an automatic transmission with Incorrect Ratio DTC (transmission clutch slip in gear above limit) listed on Page 2.
Trouble codes it names: P0717 P0721 P0722 P0729 P0730 P0731 P0732 P0733 P0734 P0735 P0736 P0743 P0748 P0753 P076F all 15 read from the document itself; NHTSA’s summary names none
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| 24-AT-002H | Service bulletin | Apr 9, 2024 | 10253275 | PDF, 143 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 themand 7 more on this site: 2019 Hyundai Tucson, 2018 Hyundai Tucson, 2017 Hyundai Tucson, 2016 Hyundai Tucson, 2021 Hyundai Veloster, 2020 Hyundai Veloster, 2019 Hyundai Veloster.
A vehicle page’s bulletin list shows the newest few communications filed against that model year; the count there is every one.
Email me new Hyundai bulletins for one of these models
A weekly email, sent only in a week when Hyundai files something new with NHTSA for the model you pick — service bulletins, campaigns, warranty extensions, over-the-air notices, every model year. Nothing else is sent; one-click unsubscribe in every message. Separate from recall alerts.
What owners reported
Source: NHTSA complaint databaseOwners of the 47 model years this bulletin names have filed 15,276 complaints with NHTSA since 2015. 2,187 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.
On the 2016 Hyundai Tucson, the 363 owners who gave an odometer reading for Power Train reported it at a median of 8,000 miles. That figure is one model year’s, not the whole range this bulletin covers — medians from different model years are not averaged.
The contact owns a 2021 Hyundai Veloster N. The contact received notification of NHTSA Campaign Number: 22V746000 (Power Train) however, the part to do the recall repair was not yet available. The local dealer was contacted. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair.
2021 Hyundai Veloster · Power Train · filed with NHTSA Dec 13, 2022 · ODI 11497291
ON 2/14/2024, my car started not to accelerate after the Crash Collision light came on. My car pulled off like it was a snail but picked up speed after I drove a bit. I had to put my hazard flasher lights on in order for other car not run over me, which was a major safety issues and put me and my grandson at risk of being hurt.
2020 Hyundai Veloster · Power Train · filed with NHTSA Aug 3, 2024 · ODI 11606255
Occasionally there is a serious delay when trying to accelerate. Car tends to jerk/buck when accelerating, usually in the lower gears. I have no idea if this is a transmission issue or a fuel injection issue, but my dealership has not been able to detect an issue and keeps telling me everything is normal when it clearly isn't.
2020 Hyundai Sonata · Power Train · filed with NHTSA Jan 4, 2021 · ODI 11386446
In depth: 2017 Hyundai Elantra transmission and drivetrain problems → · 2022 Hyundai Santa Cruz transmission and drivetrain problems → · 2023 Hyundai Santa Fe transmission and drivetrain problems → · 2022 Hyundai Santa Fe 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 group36 other manufacturer communications filed against these Hyundai models 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 |
|---|---|---|---|
| 9D8 | Service campaign | Oct 1, 2026 | Certain Palisade Hybrid (LX3 HEV) vehicles may display a Hybrid system warning light on the instrument cluster with Diagnostic Trouble Code… |
| 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… |
| LA15 | Warranty extension | Jul 27, 2026 | 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 c… |
| 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-004H | 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… |
| LA12 | Warranty extension | Mar 16, 2026 | Certain Santa Cruz (NXT) vehicles equipped with 8-speed dual clutch transmissions (8DCT) may set one of the high pressure electric oil pump… |
| 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… |
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 24-AT-002H 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 24-AT-002H 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 24-AT-002H cover?
The manufacturer filed it against 47 model years: 2017 Hyundai Accent, 2016 Hyundai Accent, 2017 Hyundai Azera, 2016 Hyundai Azera, 2020 Hyundai Elantra, 2019 Hyundai Elantra and more. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.