Mercedes-Benz service campaign NCU - 2024110007
What it saysMercedes-Benz AG (“MBAG”), the manufacturer of Mercedes-Benz vehicles, has determined that on certain MY 2020-2024 CLA and GLA (118 and 247 platform) vehicles, the rear axle flex disk may not correspond to current… NHTSA’s full summary ↓
Mercedes-Benz filed this with NHTSA as a service campaign dated Dec 13, 2024, received Dec 16, 2024, about the structure. It names 10 model years (2020–2024). 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.
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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 MY 2020-2024 CLA and GLA (118 and 247 platform) vehicles, the rear axle flex disk may not correspond to current specifications. In this case, the flex disk may have been exposed to high temperatures from the exhaust system. As a result, the connecting screws could tear loose from the flex disk, resulting in knocking noises from the rear axle. MBUSA will conduct a service campaign. An authorized Mercedes-Benz dealer will replace the flex disk and install an additional heat shield.
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| NCU - 2024110007 | Service campaign | Dec 13, 2024 | 11011845 | PDF, 611 KB |
What the document itself lists
The manufacturer titles it “Service Campaign Launch Notification”.
Parts the bulletin names
| Part number | Description | Qty |
|---|---|---|
| A 177 682 08 02 | Heat shield | — |
| A 177 680 14 08 | Holder | — |
| A 247 410 48 00 | Flex disk | — |
Read by machine from the document NHTSA serves (6 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 10 model years this bulletin names have filed 96 complaints with NHTSA since 2015. 7 of them name Power Train, Structure — the same broad component group this bulletin is filed under. NHTSA groups complaints coarsely, so that means the same area of the vehicle, not necessarily the same fault.
I have a 2020 GLA 250 4 matic mileage 62000 with a rear differential failure Was confirmed by a dealer. Mercedes is aware of this problem, there should be a safety recall before someone gets hurt
2020 Mercedes-Benz GLA-Class · Structure · filed with NHTSA Sep 30, 2026 · ODI 11768142
Cowl vent grille openings allowed normal environmental debris to accumulate, plug drainage and divert water onto electrical components and potentially result in a fire if not addressed.
2021 Mercedes-Benz GLA-Class · Structure · filed with NHTSA Jun 13, 2026 · ODI 11743847
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 group11 other manufacturer communications filed against these Mercedes-Benz models 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… |
| NCU - 2026070001 | Service campaign | Jul 24, 2026 | Check/test procedure: 1. Open hood. 2. Check clinch points against fault pattern A (Figure 2) or fault pattern B (Figure 3). Visual inspecti… |
| LI67.10-P-071418 | Service bulletin | May 13, 2026 | Complaint Wind noises in area along the top of windshield at speeds above 60mph. Cause Insufficient sealing between the windshield lip seal… |
| NCU - 2025070007 | Service campaign | Aug 2, 2025 | Mercedes-Benz AG, the manufacturer of Mercedes-Benz vehicles, has determined that on certain subject vehicles, a heat shield might not have… |
| 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… |
| LI72.20-P-078562 | Service bulletin | Jan 4, 2025 | Complaint Noises (creaking/squeaking) from liftgate lock while driving. Cause Under analysis Remedy 1. Grease liftgate lock at the marked po… |
| CL - 2024110007 | Other | Dec 13, 2024 | Please visit an authorized Mercedes-Benz dealer where they will replace the rear axle flex disk, free of charge. Schedule an appointment by… |
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 - 2024110007 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 - 2024110007 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 - 2024110007 cover?
The manufacturer filed it against 10 model years: 2024 Mercedes-Benz CLA-Class, 2023 Mercedes-Benz CLA-Class, 2022 Mercedes-Benz CLA-Class, 2021 Mercedes-Benz CLA-Class, 2020 Mercedes-Benz CLA-Class, 2024 Mercedes-Benz GLA-Class and more. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.