Hyundai service campaign SERVICE CAMPAIGN TCB
What it saysCertain 2024MY Santa Fe Hybrid (MX5A HEV) vehicles may produce a coolant leak from the coolant reservoir tank. NHTSA’s full summary ↓
Hyundai filed this with NHTSA as a service campaign dated Aug 9, 2024, received Aug 12, 2024, about the engine — 1 document under this number: 24-01-066H. It names 1 model year (2024). 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 2024MY Santa Fe Hybrid (MX5A HEV) vehicles may produce a coolant leak from the coolant reservoir tank. This bulletin outlines the procedure to inspect and, if necessary, replace the coolant reservoir tank to correct the condition.
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| 24-01-066H | Service campaign | Aug 9, 2024 | 11006231 | PDF, 785 KB |
What the document itself lists
The manufacturer titles it “COOLANT RESERVOIR LEAK INSPECTION AND REPLACEMENT”.
Parts the bulletin names
| Part number | Description | Qty |
|---|---|---|
| 25431-P7100QQH | Replace if leaking | — |
| 00232-19098WAR | Pink Coolant | — |
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 193 complaints with NHTSA since 2015. 22 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.
While driving on the highway, my 2024 Santa Fe Hybrid suddenly and without warning lost propulsion power. The loss of power was immediately accompanied by multiple simultaneous warning lights across the instrument cluster, glitching and abnormal behavior of the cluster display, and then a complete electrical shutdown of the vehicle.
2024 Hyundai Santa Fe · Engine · filed with NHTSA Jun 23, 2026 · ODI 11745902
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 group22 other manufacturer communications filed against the Hyundai Santa Fe under the same component group (engine), newest first. The eight newest are listed; the rest are on the Hyundai list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| 9C7 | Service campaign | Oct 9, 2026 | Certain Santa Fe Hybrid (TM HEV), Santa Fe Plug-in Hybrid (TM PHEV), Tucson Hybrid (NX4 HEV), and Tucson Plug-in Hybrid (NX4 PHEV) vehicles… |
| 26-EM-017H | Service bulletin | Oct 8, 2026 | Certain Palisade (LX2) and Santa Fe (NC) vehicles equipped with Lambda II 6-cylinder engines may exhibit higher-than-expected engine oil con… |
| 26-EM-016H | Service bulletin | Oct 8, 2026 | Some vehicles equipped with internal combustion engines may exhibit higher-than-expected engine oil consumption. This bulletin outlines the… |
| 26-EM-015H | Service bulletin | Oct 7, 2026 | Certain vehicles equipped with internal combustion engines may exhibit higher-than-expected engine oil consumption. This bulletin provides t… |
| 9C2 | Service campaign | May 21, 2026 | Certain 2019 – 2020 model year Santa Fe, 2017 – 2018 model year Santa Fe Sport, 2015 – 2019 model year Sonata, and 2018 – 2021 model year Tu… |
| 26-EE-003H | Service bulletin | Apr 18, 2026 | Some vehicles may exhibit difficulty starting in cold weather. This bulletin provides the procedure to perform an inspection on the starter… |
| TXX8 | Warranty extension | Feb 11, 2026 | Certain 2013 – 2019 model year Santa Fe/Santa Fe XL vehicles equipped with 3.3L Lambda II GDI engines may experience abnormal engine noise o… |
| 26-EM-005H | Service bulletin | Feb 5, 2026 | Some Santa Fe (TMA) vehicles may have DTCs P218100, P2181F0, and/or P2181F1 (Cooling System Performance) set in the Electronic Control Unit… |
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 SERVICE CAMPAIGN TCB 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 SERVICE CAMPAIGN TCB 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 SERVICE CAMPAIGN TCB cover?
The manufacturer filed it against 1 model year: 2024 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: 2024MY Santa Fe Hybrid (MX5A HEV): built 6 Mar 2024 – 7 May 2024 — the build date is on the certification label in the driver’s door jamb.