Mercedes-Benz bulletin NCU-2024010016
What it saysThis is to notify you of the Service Campaign Launch to inspect the weld seam on the trunk lid for a crack on 41 Model Year (“MY”) 2023 C-Class (206 platform) vehicles. NHTSA’s full summary ↓
Mercedes-Benz filed this with NHTSA as a service bulletin dated Feb 16, 2024, received Mar 4, 2024, about the structure. It names 1 model year (2023). A service bulletin is not a safety recall: it is the manufacturer telling its dealers how to diagnose or repair a condition, and whether the work is paid for depends on the warranty in force. Quoting the number at a service desk can save a diagnosis.
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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.
This is to notify you of the Service Campaign Launch to inspect the weld seam on the trunk lid for a crack on 41 Model Year (“MY”) 2023 C-Class (206 platform) vehicles. The vehicles will be visible and flagged in VMI as “OPEN” on February 16, 2024. Mercedes-Benz AG (“MBAG”), the manufacturer of Mercedes-Benz vehicles, has determined that on certain MY 2023 C-Class (206 platform) vehicles, the weld seam on the trunk lid may not meet current production specifications. It is possible that a crack may be evident on the weld seam. MBUSA will conduct a service campaign. An authorized Mercedes-Benz dealer will inspect the weld seam on the trunk lid and replace the trunk lid, if necessary.
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| NCU-2024010016 | Service bulletin | Feb 16, 2024 | 10251125 | PDF, 872 KB |
What the document itself lists
The manufacturer titles it “Service Campaign Launch Notification”.
Parts the bulletin names
| Part number | Description | Qty | Find it |
|---|---|---|---|
| A 206 750 04 00 | — | — | |
| A 000 986 32 01 | — | 09 |
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. Listings and prices on eBay Motors are the seller’s.
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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 1 model year this bulletin names have filed 26 complaints with NHTSA since 2015.
While driving at 60mph my panoramic sunroof completely shattered. Nothing at all hit the sunroof to cause it to shatter. If my sunshade cover had not been on, the glass would have fallen on me while operating my vehicle. This is not only dangerous but unacceptable. It was also a distraction that could have caused an accident.
2023 Mercedes-Benz C-Class · Structure · filed with NHTSA May 23, 2025 · ODI 11662742
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 structure
Source: same model, same component group15 other manufacturer communications filed against the Mercedes-Benz C-Class under the same component group (structure), newest first. The eight newest are listed; the rest are on the Mercedes-Benz list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| LI82.62-P-078631 | Service bulletin | Sep 14, 2026 | Complaint Clanking noise from the area of the speakers in the doors. Cause Under analysis. Remedy To narrow down the cause, first of all rem… |
| LI72.20-P-075746 | Service bulletin | Aug 24, 2026 | Complaint Tailgate opens unintentionally. Cause Accidental or unnoticed activation of the button to open the tailgate on the vehicle key. EX… |
| PSL-NCU Return Parts 7/3 | Other | Jul 3, 2026 | Dear Mercedes-Benz USA Dealers, The part numbers listed in the chart below should no longer be installed, and any existing stock must be ret… |
| LI77.30-P-070145 | Service bulletin | Apr 28, 2026 | Complaint Damaged cords/tensioning cables at the soft top interior trim with the following characteristics: - Cord/tensioning cable torn - C… |
| NCU - 2025120008 | Service campaign | Jan 10, 2026 | Additional loose or jammed fasteners may be present in the area between the front axle torsion bar and integral carrier, which might result… |
| LI72.12-P-076175 | Service bulletin | Sep 15, 2025 | Complaint Seal secured to B-pillar trim on rear doors cracked in upper area, see picture 1. Cause Production deviation at supplier of B-pill… |
| LI88.60-P-079592 | Service bulletin | Jul 31, 2025 | Complaint Fuel filler flap/socket flap sticks, cannot be opened Cause Under analysis. Remedy Create TIPS case with fault description and vid… |
| LI88.60-P-072093 | Service bulletin | Jan 24, 2025 | Complaint Fuel door may require several attempts to open. Please note that if the complaint "Fuel filler flap not opening" occurs, it is imp… |
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-2024010016 a recall?
No. A service bulletin 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-2024010016 repair free?
Not automatically. A service bulletin describes how to diagnose or repair a condition; who pays depends on the warranty in force, any extension, and the dealer. Quoting the number can save a diagnosis either way. Every Mercedes-Benz warranty extension on file lists the ones Mercedes-Benz has filed.
Which vehicles does NCU-2024010016 cover?
The manufacturer filed it against 1 model year: 2023 Mercedes-Benz C-Class. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.