Mercedes-Benz service campaign NCU - 2025030015
Mercedes-Benz filed this with NHTSA as a service campaign dated Apr 4, 2025, received Apr 16, 2025, about the electrical system. It names 7 model years (2021–2025). 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 communicationMercedes-Benz AG, the manufacturer of Mercedes-Benz vehicles, has determined that on certain subject vehicles, the SCN coding of the electronic ignition control unit does not correspond to the latest production specifications. As a result, a red battery warning message could inadvertently display on the instrument cluster. MBUSA will conduct a service campaign. An authorized Mercedes-Benz dealer will perform an SCN coding of the electronic ignition control unit.
Document filed under this number
| Document | Kind | Dated | NHTSA id |
|---|---|---|---|
| NCU - 2025030015 | Service campaign | Apr 4, 2025 | 11017077 |
The summary is NHTSA’s abstract of the document, as filed under 49 CFR 579.5; the full text comes from the manufacturer or a dealer. 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. Quote it at a service desk; it is what the dealer’s system is keyed on.
Model years it names
Source: as the manufacturer filed themAlso filed against model years this site has no page for: 2023 Mercedes-Benz AMG S 63 E; 2024 Mercedes-Benz AMG S 63 E.
A 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 Mercedes-Benz NCU - 2025030015 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 NCU - 2025030015 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 NCU - 2025030015 cover?
The manufacturer filed it against 7 model years: 2025 Mercedes-Benz S-Class, 2024 Mercedes-Benz S-Class, 2023 Mercedes-Benz S-Class, 2022 Mercedes-Benz S-Class, 2021 Mercedes-Benz S-Class, 2023 Mercedes-Benz AMG S 63 E and more. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.