Kia service campaign SC345
Kia filed this with NHTSA as a service campaign dated Aug 22, 2025, received Aug 20, 2025, about the power train — 6 documents under this number: SC345_OWNR_SG2, SC345_OWNR_CV, SC345_TSB, SC345_QA and more. It names 4 model years (2023–2024). 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.
What the bulletin says
Source: NHTSA's summary of the manufacturer's communicationTECHNICAL SERVICE BULLETIN: VOLUNTARY SERVICE CAMPAIGN FRONT MOTOR REDUCTION GEAR OIL REPLACEMENT (SC345) - This bulletin provides information to replace the front motor reduction gear assembly gear oil on certain 2023-2024MY Niro EV (SG2 EV) vehicles produced from December 12, 2022 through February 7, 2024 and EV6 (CV) vehicles produced from December 14, 2022 through February 22, 2024. During the production of the subject vehicles, the amount of gear oil in the front motor and reduction gear assembly may have been filled below factory specification. If the gear oil level is lower than Kia’s factory specifications, the subject vehicles may eventually produce a grinding noise or whining noise from the front of the vehicle while driving.
Documents filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| SC345_OWNR_SG2 | Service campaign | Aug 22, 2025 | 11021987 | not yet checked |
| SC345_OWNR_CV | Service campaign | Aug 22, 2025 | 11021986 | not yet checked |
| SC345_TSB | Service bulletin | Aug 20, 2025 | 11022351 | not yet checked |
| SC345_QA | Service campaign | Aug 20, 2025 | 11021988 | not yet checked |
| SC345_DPSM | Service campaign | Aug 20, 2025 | 11021985 | not yet checked |
| SC345_DP | Service campaign | Aug 20, 2025 | 11021984 | 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 SC345 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 SC345 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 SC345 cover?
The manufacturer filed it against 4 model years: 2024 Kia EV6, 2023 Kia EV6, 2024 Kia Niro, 2023 Kia Niro. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.