Hyundai bulletin 23-EM-006H
What it saysCertain 2022-2023MY Santa Cruz (NXT) vehicles may experience a warning lamp illumination for a diagnostic trouble code P2181 that is related to the Integrated Thermal Management Module (ITM). NHTSA’s full summary ↓
Hyundai filed this with NHTSA as a service bulletin dated Oct 30, 2023, received Nov 7, 2023, about the engine. It names 2 model years (2022–2023). 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 2022-2023MY Santa Cruz (NXT) vehicles may experience a warning lamp illumination for a diagnostic trouble code P2181 that is related to the Integrated Thermal Management Module (ITM). Follow the service procedure outlined in this bulletin to replace the ITM with a revised part and reprogram the powertrain control module to update the control logic.
Trouble codes it names: P2181
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| 23-EM-006H | Service bulletin | Oct 30, 2023 | 10244997 | PDF, 601 KB |
What the document itself lists
The manufacturer titles it “DTC P2181 – INTEGRATED THERMAL MANAGEMENT (ITM)”.
Parts the bulletin names
| Part number | Description | Qty | Find it |
|---|---|---|---|
| 25600-2S500 | Integrated Thermal Management Module (ITM) | 1 | eBay Motors → |
| 25600-2S600QQH | Integrated Thermal Management Module (ITM) | 1 | eBay Motors → |
| 39100-2SNX2 | — | — | |
| 39110-2SNX2 | ROM ID Information Table: Event #1029 | — | eBay Motors → |
| 39110-2S171 | — | — | |
| 39110-2S177 | — | — | |
| 39110-2S172 | — | — | |
| 39110-2S173 | — | — | |
| 39110-2S178 | — | — | |
| 39110-2S174 | — | — | |
| 39110-2S322 | — | — | |
| 39110-2S323 | — | — | |
| 39110-2S325 | — | — | |
| 39110-2S326 | DTC P2181 – INTEGRATED THERMAL MANAGEMENT (ITM) REPLACEMENT AND ECU UPDATE | — | eBay Motors → |
Labour operation and the time the manufacturer allows
| Operation | Description | Time |
|---|---|---|
| 30DA13R0 | DTC Inspection + ITM Replacement + ECU Update | 2.1 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. 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 2 model years this bulletin names have filed 264 complaints with NHTSA since 2015. 71 of them name 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.
Left my neighborhood and as I pulled away from the stop sign the 1-2 shift felt abrupt, which has never happened before. No other issues were noticed until I got about a mile from home and my Santa Cruz wouldn't accelerate past 25-30 mph. The transmission wouldn't shift and the engine wouldn't rev past 3000 rpm.
2022 Hyundai Santa Cruz · Engine · filed with NHTSA Jul 12, 2022
My issue was that I would press the gas pedal, but once I got to 20 mph the engine would stop giving power and I couldn’t get up to speed. My top speed was 30 mph, even though I would give it gas to speed up. This was the worst after I would come to a stop at a traffic light.
2023 Hyundai Santa Cruz · Engine · filed with NHTSA Jun 26, 2023
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 engine
Source: same model, same component group4 other manufacturer communications filed against the Hyundai Santa Cruz under the same component group (engine), newest first.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| 9C3 | Service campaign | Oct 30, 2025 | Certain 2025MY Santa Cruz (NXT) and Santa Fe (MX5A) vehicles equipped with the 2.5T-GDI Theta III engine may exhibit coolant residue on the… |
| 23-01-084H | Service bulletin | Nov 2, 2023 | Certain 2023MY Santa Cruz (NXT) and Santa Fe (TMA) vehicles may have been produced with a damaged oil level sensor during assembly. Follow t… |
| 23-EM-005H | Service bulletin | Oct 13, 2023 | This bulletin provides important checkpoint guidelines when performing engine oil and filter change services. |
| 23-FL-002H-1 | Service bulletin | Jun 9, 2023 | This bulletin provides the diagnostic procedure for the GDI injector(s) in certain 21-23MY Sonata, 21-22MY Santa Fe, certain 22MY Santa Cruz… |
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-EM-006H 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-EM-006H 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 23-EM-006H cover?
The manufacturer filed it against 2 model years: 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.