Hyundai bulletin 24-01-018H
What it saysCertain 2020-2021MY Accent (HC) vehicles may experience an illuminated warning light due to the following Diagnostic Trouble Codes (DTC) listed below: ⢠TCU DTC Codes: P0730, P0731, P0741, P0867, P1603 Follow… NHTSA’s full summary ↓
Hyundai filed this with NHTSA as a service bulletin dated Feb 23, 2024, received Mar 5, 2024, about the electrical system — 2 documents under this number. It names 2 model years (2020–2021). 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 communicationCertain 2020-2021MY Accent (HC) vehicles may experience an illuminated warning light due to the following Diagnostic Trouble Codes (DTC) listed below: ⢠TCU DTC Codes: P0730, P0731, P0741, P0867, P1603 Follow the procedure in TSB 24-01-018H (or latest version) to perform the TCU update, and, if necessary, replace the IVT (Intelligent Variable Transmission) to resolve this condition.
Trouble codes it names: P0730 P0731 P0741 P0867 P1603
Documents filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| 24-01-018H | Service bulletin | Feb 23, 2024 | 10251291 | PDF, 301 KB |
| 24-01-018H | Service bulletin | Feb 23, 2024 | 10251290 | PDF, 507 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 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 28 complaints with NHTSA since 2015. 2 of them name Electrical System — 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 purchased my 2020 Hyundai Accent from Shirlie Slack Mitsubishi, in Fredericksburg, Virginia on . It wasn't long after purchasing that I began experiencing difficulties with it. The car will shut off when it comes to a complete stop or even if I s for a brief moment to switch gears, for example when parallel parking.
2020 Hyundai Accent · Electrical System · filed with NHTSA Nov 13, 2024
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 electrical system
Source: same model, same component group12 other manufacturer communications filed against the Hyundai Accent under the same component group (electrical system), newest first. The eight newest are listed; the rest are on the Hyundai list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| Z01 | Warranty extension | May 23, 2026 | Some vehicles listed below may exhibit an intermittent airbag warning light and DTC(s) B1763 (OCS ECU Defect), and/or B1764 (OCS Mat Defect)… |
| P33 | Other | Dec 19, 2025 | In response to this trend, we engineered a software upgrade that addresses the social media theft method and made it available to owners of… |
| 25-01-089H | Other | Dec 15, 2025 | In addition to the Anti-Theft software provided under Service Campaign 993 (TSB 24-01-009H-1), a zinc reinforced ignition cylinder protector… |
| 9C1 | Service campaign | May 8, 2025 | Some vehicles may exhibit a loss of connectivity or interruptions in the middle of using Bluelink Service functions. This may be due to an i… |
| 993, 9A5, P32, 9A8 | Service campaign | May 10, 2024 | A class settlement against Hyundai Motor America (“HMA”) that had alleged that certain 2011 – 2022 model year Hyundai vehicles that were not… |
| 24-01-014H | Service bulletin | Feb 21, 2024 | Certain 2020-2021MY Accent (HC) vehicles may experience an illuminated warning light due to the following Diagnostic Trouble Codes (DTC) lis… |
| 24-01-009H | Service bulletin | Feb 12, 2024 | Hyundai has launched an anti-theft software upgrade and window decal campaign (Campaign 993), combined with an anti-theft steering wheel loc… |
| 23-01-014H-6 | Service bulletin | Jan 22, 2024 | Hyundai has launched an anti-theft software upgrade and window decal campaign (Campaign 993), combined with an anti-theft steering wheel loc… |
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 24-01-018H 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 24-01-018H 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.
Which vehicles does 24-01-018H cover?
The manufacturer filed it against 2 model years: 2021 Hyundai Accent, 2020 Hyundai Accent. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.