Mercedes-Benz service campaign NCU - 2026040005
What it saysMercedes-Benz AG (“MBAG”), the manufacturer of Mercedes-Benz vehicles, has determined that on certain Model Year (“MY”) 2025 CLE (236 platform) vehicles, the seam seal in the front left wheel arch does not meet current… NHTSA’s full summary ↓
Mercedes-Benz filed this with NHTSA as a service campaign dated Apr 25, 2026, about the wheels. It names 2 model years (2024–2025). 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.
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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.
Mercedes-Benz AG (“MBAG”), the manufacturer of Mercedes-Benz vehicles, has determined that on certain Model Year (“MY”) 2025 CLE (236 platform) vehicles, the seam seal in the front left wheel arch does not meet current production specifications which could result in leaks and subsequent corrosion in that area. MBUSA will conduct a service campaign. An authorized Mercedes-Benz dealer will rework the front left wheel arch seam seal on the affected vehicles.
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| NCU - 2026040005 | Service campaign | Apr 25, 2026 | 11031552 | PDF, 699 KB |
What the document itself lists
Parts the bulletin names
| Part number | Description | Qty |
|---|---|---|
| A 005 989 63 20 | container must be used for approx. 8 vehicles | — |
| A 000 989 31 00 | — | — |
Read by machine from the document NHTSA serves (5 pages), read Sep 30, 2026. A part number is shown only where it matches Mercedes-Benz’s own catalogue shape, an operation only with its code and time, and a description only where the reader got it whole; anything it could not settle is left out, and the PDF is the record. Times are the manufacturer’s warranty allowances, not a quote.
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 2 model years this bulletin names have filed 10 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 wheels
Source: same model, same component group3 other manufacturer communications filed against the Mercedes-Benz CLE-Class under the same component group (wheels), newest first.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| LI40.10-P-061032 | Service bulletin | May 15, 2026 | Complaint Noises at the front axle when cornering or maneuvering (video files attached) Note: Save video files locally and play them with Wi… |
| 2024040001 | Service campaign | May 11, 2024 | Mercedes-Benz AG, the manufacturer of Mercedes-Benz vehicles, has determined that on certain MY 2023-2024 C-Class, CLE, E-Class, EQE, EQS, G… |
| CL - 2024040001 | Other | May 2, 2024 | An authorized Mercedes-Benz dealer will replace the TIREFIT bottle in the trunk of your vehicle, free of charge. The bottle may potentially… |
Quote the number at the service desk. It is what the dealer’s system is keyed on.
Every manufacturer communication NHTSA holds for Mercedes-Benz, by the number printed on the letter.
Common questions
Source: NHTSA, 49 CFR 579.5Is Mercedes-Benz NCU - 2026040005 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 - 2026040005 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 - 2026040005 cover?
The manufacturer filed it against 2 model years: 2025 Mercedes-Benz CLE-Class, 2024 Mercedes-Benz CLE-Class. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.