Kia service campaign SC358
What it saysVOLUNTARY SERVICE CAMPAIGN: INCORRECT AMOUNT OF AIR CONDITIONING REFRIGERANT (SC358) - This bulletin provides information regarding an incorrect amount of air conditioning refrigerant in certain 2025MY Niro EV, HEV… NHTSA’s full summary ↓
Kia filed this with NHTSA as a service campaign dated Dec 23, 2025, received Dec 18, 2025, about the visibility/wiper — 5 documents under this number: TSB_SC358, SC358_OWNR, SC358_QA, SC358_DPSM and 1 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.
Get the next Kia Niro bulletin by email Weekly, only when something new is filed. Nothing else; one-click unsubscribe.
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.
VOLUNTARY SERVICE CAMPAIGN: INCORRECT AMOUNT OF AIR CONDITIONING REFRIGERANT (SC358) - This bulletin provides information regarding an incorrect amount of air conditioning refrigerant in certain 2025MY Niro EV, HEV, and PHEV (SG2 P/HEV, SG2 EV) vehicles manufactured between September 2, 2024 and May 19, 2025. During assembly, the affected vehicles may have been produced with the incorrect amount of refrigerant during the in-line manufacturing process. As a result, the HVAC system may provide insufficient cooling in the cabin when vehicle owners are operating the vehicle.
Documents filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| TSB_SC358 | Service bulletin | Dec 23, 2025 | 11026824 | PDF, 273 KB |
| SC358_OWNR | Service campaign | Dec 19, 2025 | 11026697 | PDF, 139 KB |
| SC358_QA | Service campaign | Dec 17, 2025 | 11026696 | PDF, 111 KB |
| SC358_DPSM | Service campaign | Dec 17, 2025 | 11026695 | PDF, 83 KB |
| SC358_DP | Service campaign | Dec 17, 2025 | 11026694 | PDF, 108 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.
Email me new Kia bulletins for the Niro
A weekly email, sent only in a week when Kia files something new with NHTSA for the model you pick — service bulletins, campaigns, warranty extensions, over-the-air notices, every model year. Nothing else is sent; one-click unsubscribe in every message. Separate from recall alerts.
What owners reported
Source: NHTSA complaint databaseOwners of the 1 model year this bulletin names have filed 20 complaints with NHTSA since 2015.
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 visibility/wiper
Source: same model, same component group3 other manufacturer communications filed against the Kia Niro under the same component group (visibility/wiper), newest first.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| PS753 | Service bulletin | Dec 11, 2023 | PITSTOP: AIR CONDITIONER AUTO-DRY WHILE VEHICLE IS OFF - This Pitstop provides information regarding the new feature Air Conditioner Auto-Dr… |
| TSB_CLI054 | Service bulletin | Sep 5, 2023 | TECHNICAL SERVICE BULLETIN: AIR CONDITIONING REFRIGERANT COLLECTION AND RECHARGE (SA538) - This bulletin provides information to evacuate, v… |
| TSB_CLI049_R1 | Service bulletin | Jun 26, 2023 | TECHNICAL SERVICE BULLETIN: PARTIAL REPAIR - ELECTRICAL A/C COMPRESSOR - This bulletin has been revised to include additional information.… |
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 SC358 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 SC358 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 SC358 cover?
The manufacturer filed it against 1 model year: 2025 Kia Niro. 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: built on or after 2 Sep 2024; Niro (SG2 P/HEV, SG2 EV): built 2 Sep 2024 – 19 May 2025 — the build date is on the certification label in the driver’s door jamb.