Kia service campaign SC353
Kia filed this with NHTSA as a service campaign dated Nov 13, 2025, received Dec 2, 2025, about the engine — 5 documents under this number: SC353_OWNR, SC353_QA, SC353_DP, SC353_DPSM and more. It names 1 model year (2025). 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.
What the bulletin says
Source: NHTSA's summary of the manufacturer's communicationTECHNICAL SERVICE BULLETIN: VOLUNTARY SERVICE CAMPAIGN: ENGINE REPLACEMENT FOR COOLANT LEAK (SC353) - This bulletin provides information to address an engine coolant leak concern on certain 2025MY Sorento (MQ4a) vehicles equipped with a 2.5L Theta III T-GDI engine produced from December 18, 2024 through February 24, 2025 (see the list of 11 affected VINs below). The engine block in the subject vehicles may have a fracture, which can result in a coolant leak. Over time, continuing to operate the vehicle with this condition may result in an ‘Engine Overheated’ warning message displayed on the instrument cluster and cause damage to the vehicle’s engine.
Documents filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| SC353_OWNR | Service campaign | Nov 13, 2025 | 11025941 | not yet checked |
| SC353_QA | Service campaign | Nov 11, 2025 | 11025944 | not yet checked |
| SC353_DP | Service campaign | Nov 11, 2025 | 11025943 | not yet checked |
| SC353_DPSM | Service campaign | Nov 11, 2025 | 11025942 | not yet checked |
| SC353_TSB | Service bulletin | Nov 11, 2025 | 11025939 | not yet checked |
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.
Common questions
Source: NHTSA, 49 CFR 579.5Is Kia SC353 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 SC353 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 SC353 cover?
The manufacturer filed it against 1 model year: 2025 Kia Sorento. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.