Kia service campaign SC373A
What it saysVOLUNTARY SERVICE CAMPAIGN: OWNER NOTIFICATION (SC373A) - This document is the owner notification advising that Kia is conducting a Voluntary Service Campaign on certain 2024-2026 MY EV6 vehicles to replace the 3-way… NHTSA’s full summary ↓
Kia filed this with NHTSA as a service campaign dated Aug 21, 2026, received Sep 2, 2026, about the engine — 1 document under this number: SC373A_OWNR. It names 3 model years (2024–2026). 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 communicationPicked out of NHTSA’s summary below, word for word. The document itself is the record, and the dealer checks the VIN.
VOLUNTARY SERVICE CAMPAIGN: OWNER NOTIFICATION (SC373A) - This document is the owner notification advising that Kia is conducting a Voluntary Service Campaign on certain 2024-2026 MY EV6 vehicles to replace the 3-way coolant valve assembly with a new one. In addition, dealers will inspect the 3-way coolant valve harness connector for corrosion and, if necessary, replace the harness connector.
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| SC373A_OWNR | Service campaign | Aug 21, 2026 | 11036627 | PDF, 142 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 3 model years this bulletin names have filed 133 complaints with NHTSA since 2015. 12 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.
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 group2 other manufacturer communications filed against the Kia EV6 under the same component group (engine), newest first.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| SC373B | Service campaign | Sep 4, 2026 | VOLUNTARY SERVICE CAMPAIGN: OWNER NOTIFICATION (SC373B) - This document is the owner notification advising that Kia is conducting a Voluntar… |
| SC271_DP | Service bulletin | Jul 11, 2023 | VOLUNTARY SERVICE CAMPAIGN: DEALER PRINCIPAL MEMO - This document is the announcement to the dealer principals that Kia is conducting a Vol… |
Quote the number at the service desk. It is what the dealer’s system is keyed on.
Every manufacturer communication NHTSA holds for Kia, by the number printed on the letter.
Common questions
Source: NHTSA, 49 CFR 579.5Is Kia SC373A 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 SC373A 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 SC373A cover?
The manufacturer filed it against 3 model years: 2026 Kia EV6, 2025 Kia EV6, 2024 Kia EV6. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.